Custom CNC AN fittings hose ends and adapters machined to your drawings with DFM review thread and sealing control finishing inspection assembly prototype and production support.
One-stop service from prototyping to mass production
1-on-1 engineering DFM support, 4-Hour DFM Analysis
Multi-process machining with tolerances up to ±0.005 mm, reduce costs by 30%
100+ material and surface finishing, with material testing reports provided
12-step quality inspection process with 100% inspection of critical dimensions
1 DayPrototyping Machining
2 HoursQuick Quote
0 PcsMinimum Order Qualities
98%Yield
Home / AN Fittings /
Accelerate Your Custom AN Fitting Development with On-Demand CNC Manufacturing
Are you looking for custom CNC AN fittings, hose ends, adapters, or rapid prototype machining for your next fuel, oil, cooling, or fluid-control project? VMT provides drawing-based CNC machining solutions for AN swivel hose ends, push-lock fittings, PTFE hose ends, bulkhead fittings, reducers, AN-to-NPT adapters, AN-to-ORB adapters, forged hose ends, and other custom fluid connection components.
With experience supporting automotive manufacturers, motorsport suppliers, equipment builders, product developers, and fluid-system companies, VMT helps turn your connection design, sealing requirements, and assembly interfaces into precision-machined parts. Our CNC turning, turn-mill machining, multi-axis milling, 5-axis machining, forging coordination, deburring, surface finishing, assembly, and inspection capabilities help control critical threads, sealing surfaces, internal bores, port positions, coating-sensitive dimensions, and batch-to-batch consistency.
A wide range of aluminum, stainless steel, brass, titanium, PTFE, and other drawing-specified materials is available to help you balance weight, strength, corrosion resistance, fluid compatibility, durability, finish, and cost. From DFM review and prototype validation to low-volume production and repeat manufacturing, VMT helps you reduce machining and assembly risks, improve fitting consistency, and move reliable custom AN fitting solutions into production faster.
Your AN fitting has to do more than match individual dimensions on a drawing. Threads, sealing surfaces, bores, finishes and assembled components must work together. We plan these relationships before machining so problems are found before they reach your assembly line.
A thread or flare can pass an isolated dimensional check and still create sealing problems when its position, finish or mating relationship is wrong. We machine and inspect these features from the functional datum structure defined by your drawing.
Tool wear, coating buildup and inconsistent inspection can change thread engagement. We connect thread machining, gauging, finishing allowance and post-finish checks so approved prototypes can be reproduced more consistently.
Anodizing or plating can affect threads, bores and mating diameters. We identify functional surfaces before finishing and review machining allowance, masking and post-finish verification according to your drawing.
Cross-holes, deep bores and thread exits can trap burrs that are difficult to see after machining. We consider tool access, deburring, cleaning and final inspection before confirming the manufacturing sequence.
A 45°, 90° or multi-port fitting must place each interface in the correct relationship to the others. We control port positions and machining datums so your hose routing and installation clearances follow the approved design.
Your first parts may work, but later batches can drift when fixture, tooling, inspection or finishing conditions change. We carry approved manufacturing and inspection controls into repeat production.
Before tooling and fixtures are confirmed, we connect your fitting size, angle, material, thread, sealing interface, finish and inspection requirements to the machining plan. This helps you verify not only the individual dimensions, but also whether the finished fitting will assemble and function as designed.
Your AN size, thread, elbow angle, port direction and mating geometry determine how the part connects. We machine related features from controlled datums and verify the specified interfaces so the finished fitting matches your assembly layout.
Aluminum, stainless steel, brass, titanium and PTFE behave differently during machining and use. We review your material, media, temperature, corrosion, weight and finish requirements before confirming the production route.
Threads and sealing areas must remain functional after machining and finishing. We coordinate thread geometry, seats, bores, surface condition, coating allowance and masking so finishing does not compromise the required fit.
We identify which features require thread gauges, dimensional inspection, CMM verification, assembly checks or application-specific leak/pressure testing, then match the inspection plan to your drawing and acceptance criteria.
From fuel, oil and cooling connections to swivel, PTFE, bulkhead and reducer designs, we machine AN fittings around your drawing, mating interface and assembly requirements. Each design is reviewed for machining access, threads, sealing areas, finish and verification before production.
Custom fluid fittings connect your fuel, lubrication or cooling components; CNC turning and milling control threads, bores and sealing interfaces, while dimensional and application-specified verification confirms fit before assembly.
Swivel hose ends support flexible installation and hose orientation; CNC machining controls threaded interfaces, swivel diameters and retaining features, while assembly inspection verifies rotation, retention and mating fit.
Push-lock hose ends secure compatible hose without a conventional reusable socket; CNC machining controls barbs, threads, transitions and sealing areas so your hose engagement and connected interface follow the approved design.
PTFE hose-end assemblies require compatible inserts, sockets and sealing interfaces; machining controls the metal and polymer mating features while assembly checks verify engagement and the dimensions specified for your hose system.
Y-block splitters divide or combine fluid paths in compact layouts; multi-axis machining controls branch angles, intersecting bores and multiple threaded ports while deburring and inspection protect internal flow passages.
Male flare tees connect three lines within one body; CNC machining controls port location, flare interfaces, threads and bore intersections while dimensional checks verify the relationships needed for your final assembly.
AN-to-NPT adapters connect two different drawing-defined interfaces; CNC turning controls each thread, transition and shoulder from a common datum while inspection verifies both sides before finishing and assembly.
Bulkhead fittings route lines through panels or tanks; CNC machining controls mounting shoulders, threads, sealing areas and projection lengths so the fitting fits your wall thickness and connected components.
Male-to-female swivel adapters change connection direction while supporting installation adjustment; turning and milling control threads, swivel interfaces and retained components while assembly checks verify movement and fit.
AN-to-ORB adapters combine flare and O-ring port interfaces where specified; CNC turning coordinates threads, sealing features and shoulders while inspection verifies the functional relationship between both ends.
Forged hose-end blanks can reduce material removal for suitable production programs; after engineering review, forging forms the main body and CNC machining finishes threads, bores, sealing interfaces and assembly features.
Male flare reducers connect two specified sizes while maintaining a controlled internal transition; CNC turning maintains concentric threads, shoulders and flare interfaces so both connections remain aligned.
Quick-connect adapters allow your female AN interface to connect and disconnect more efficiently; CNC machining controls threads, locking features, sealing areas and mating diameters while assembly verification checks engagement and retention.
Your application determines the material, fitting geometry, hose routing, surface finish and verification requirements. We review these conditions before production so the fitting is manufactured around the way you intend to install and use it.
Fuel, oil and cooling lines require compact routing, low weight and reliable interfaces; custom elbows, reducers and hose ends can be machined around your vehicle packaging and mating components.
Discuss Your Application
Fuel fittings connect tanks, pumps, filters, regulators and rails; material compatibility, sealing interfaces, cleanliness and any required leak verification should be defined for the actual fuel system.
Discuss Fuel Fittings
Custom AN adapters connect oil coolers, filters, pumps and reservoirs while controlled bore transitions, thread fit and routing geometry support compact lubrication-system layouts.
Discuss Oil Fittings
Radiators, heat exchangers and coolant reservoirs often need custom angles or adapter combinations; CNC machining helps control ports, threads and installation clearances around the existing layout.
Discuss Cooling Fittings
Prototype vehicles and test rigs frequently need non-standard adapters between existing ports, sensors and hoses, allowing engineers to validate a system before production hardware is finalized.
Discuss Prototype Fittings
Custom adapters can connect existing fluid components with different port or thread requirements where dimensional control, corrosion resistance and application-specific verification are important.
Discuss Industrial FittingsIf your AN fitting project also includes mounting, regulation, tank, valve or assembly components, we can review these related parts together with your drawings. This helps you coordinate mating interfaces, materials, finishes and assembly requirements across the same project.
Custom aluminum hose-end wrenches help assemble anodized AN fittings while reducing direct steel-tool contact with visible surfaces; CNC machining controls wrench geometry, grip features and branded details.
Oil sandwich plates route oil through filters, coolers or sensor circuits; CNC machining controls mounting faces, ports, grooves and threaded connections so the finished plate aligns with the specified engine interface.
Custom shut-off valve bodies and components control fluid isolation; machining focuses on bores, threads, sealing interfaces and valve-seat relationships before assembly and application-defined verification.
Regulator housings and related parts require accurate ports, internal chambers, threads and sealing features; CNC machining coordinates these interfaces with your valve, diaphragm or assembly design.
Throttle cable brackets position cables and related hardware around the intake assembly; CNC machining controls mounting holes, cable location, profile and finish so the bracket fits your engine layout.
Where your project includes a custom tank, VMT can review the required machining, fabrication and assembly route together with filler, outlet, vent and mounting interfaces after engineering review.
Custom tank caps combine visible surfaces with threads, seals and grip details; CNC machining and finishing coordinate fit, appearance and sealing-related geometry around the specified filler interface.
Tank vent valve components manage the vent interface specified by your design; precision machining controls ports, seats, threads and retaining features before the required valve assembly and verification steps.
Your hose-end assembly depends on more than the machined exterior. Seal grooves, bent tubes, retaining features and swivel interfaces must remain correctly positioned after machining, forming, finishing and assembly. We review these details together so the finished fitting performs as one complete assembly.
Groove geometry, edge condition and mating diameters are machined to your drawing so the specified seal can be installed without unnecessary pinching, damage or loss of retention.
For formed elbow or tube sections, we coordinate bend geometry with subsequent machining so port orientation, tube shape and assembly interfaces remain within your approved requirements.
Retaining grooves, shoulders, lock features and mating diameters are controlled before assembly, then checked for the retention and movement required by your fitting design.
We review the complete connection instead of checking only the outside shape. Your fitting may include threads, flare or seal interfaces, cross-holes, thin sections, retaining features, coating-sensitive areas and mating components that all influence the manufacturing sequence.
By connecting these features before production, we can select a machining route, fixture strategy and inspection method around how your part actually needs to assemble.
Your inspection plan should focus on the characteristics that affect assembly, sealing and interchangeability. We match the measurement method to the drawing instead of treating every fitting with one generic inspection routine.
Specified internal and external threads can be verified with appropriate gauges or dimensional inspection according to your drawing requirements.
Flare, seat, groove and other sealing-related features are checked against the critical geometry identified for your assembly.
Related bores, axes and port positions are verified when alignment affects hose routing, assembly or the connected component.
CMM and conventional measuring equipment are selected according to geometry, accessibility and the characteristics identified during engineering review.
Critical threads, bores, seats and mating areas can be rechecked after anodizing, plating or other surface treatments where finishing may influence fit.
When your drawing or inspection specification requires leak or pressure testing, the agreed medium, pressure, duration and acceptance criteria are incorporated into the validation plan.
Your fitting structure, material, quantity and assembly requirements determine the manufacturing route. We can combine turning, milling, 5-axis machining, forging, finishing and assembly rather than forcing every AN fitting into one process.
Turning produces concentric bodies, threads, shoulders and bores, while turn-mill machining adds flats, ports and cross-holes in fewer setups to maintain relationships between rotational and milled features.
CNC milling and secondary machining create blocks, tees, Y-splitters, flats, mounting features and multi-port bodies while controlled fixturing keeps these features aligned to threaded and sealing interfaces.
Five-axis machining supports complex angled ports and multi-direction features while reducing repeated repositioning, helping preserve datum relationships on fittings that are difficult to access in conventional setups.
For suitable fitting geometry and production volume, cold forging can form the primary blank before CNC machining finishes threads, bores and sealing surfaces, subject to tooling and engineering review.
Internal intersections, thread exits and visible edges are deburred before anodizing, plating, passivation or polishing, with critical interfaces protected according to your drawing and finishing requirements.
Where your hose end or fitting contains nuts, sockets, seals, retaining rings or swivel components, assembly can follow the approved BOM and sequence with fit, retention and movement checked before final inspection.
Choose material according to the fluid, load, temperature, corrosion exposure, weight and finish required by your project. We review material together with threads, wall thickness, sealing features and manufacturing process before production.
6061, 7075 and other drawing-specified aluminum alloys support lightweight fittings; CNC machining controls threads and sealing areas before anodizing while post-finish checks help preserve required assembly dimensions.
Stainless steel suits projects requiring corrosion resistance, strength or durable threaded interfaces; machining strategy and passivation or polishing are matched to the grade, geometry and fluid environment specified.
Brass can support selected adapters, inserts and fluid components where machinability, corrosion behavior or metal sealing characteristics are important, subject to the media and operating conditions of your application.
Titanium can support lightweight, corrosion-resistant or high-value fitting applications; cutting strategy, threads, thin sections and surface requirements are reviewed before machining to control tool access and final geometry.
PTFE can be machined for customer-specified seals, liners and fluid-interface components where chemical behavior or low-friction characteristics are required, with dimensions planned around the material's application and assembly conditions.
If your design specifies another machinable alloy or polymer, send the material grade with your drawing. We review machinability, geometry, finishing and inspection requirements before confirming the production route.
Surface finishing affects appearance, corrosion behavior and sometimes functional dimensions. We identify threads, sealing areas, bores and visible surfaces before finishing so masking and post-finish verification can be planned around your drawing.
Used on aluminum fittings for corrosion protection and color while critical threads, sealing interfaces and coating-sensitive dimensions are reviewed before finishing.
Discuss Anodizing
Hard anodizing can support drawing-specified wear or surface requirements while coating allowance is considered around threads, bores, shoulders and mating features.
Discuss Hard Anodizing
Black, red, blue and other approved anodized colors can support branded automotive components while surface preparation and visible-area consistency are controlled.
Discuss Your Color
Electroless nickel may support corrosion or wear requirements where specified, with coating thickness considered around functional threads and mating dimensions.
Discuss Nickel Plating
Passivation supports stainless-steel corrosion resistance after machining while preserving the threads, bores and interfaces defined by your drawing.
Discuss Passivation
Polishing improves selected visible surfaces while edge shape, sealing features and dimensional relationships are protected during surface preparation.
Discuss Polishing
Controlled blasting produces a uniform prepared surface before finishing while sealing areas, threads and critical mating interfaces can be protected as required.
Discuss Surface Preparation
Laser engraving adds part numbers, size identification, logos or assembly marks after machining and finishing while maintaining the required functional clearance.
Discuss Laser Marking
VMT participated in BIAS 2017 in Bangkok, Thailand, where automotive fittings and related components were presented alongside our manufacturing capabilities. The exhibition reflects our continued focus on automotive, performance and fluid-connection component projects.
For your AN fitting project, this manufacturing experience is combined with drawing review, CNC machining, surface finishing coordination, assembly and inspection so you can work with one team from prototype development through repeat production.
Your prototype should confirm more than appearance. It gives you a chance to verify threads, assembly, sealing interfaces, finish and hose routing before the approved machining and inspection conditions are carried into repeat production.
Review geometry, interfaces, material, quantity, finish and inspection requirements.
Define manufacturing sequence, fixtures, tooling, deburring and verification methods.
Machine initial parts for fit, interface, finish, routing and assembly validation.
Verify agreed critical characteristics and confirm any engineering or finishing changes.
Carry approved machining, fixtures, inspection checkpoints and finish requirements forward.
Complete project information helps us review machining, finishing, assembly and inspection risks before quotation instead of discovering them after production starts.
These questions address the manufacturing issues that usually affect material selection, thread and sealing accuracy, finishing, inspection, assembly and production consistency in a custom AN fitting project.
Use this guide to understand the fitting types, materials, CNC processes, finishing, assembly and inspection decisions that can affect your custom AN fitting project before you send an RFQ.
A good AN fitting project begins with more than choosing a dash size or material. The connection interface, hose type, fluid, thread, sealing geometry, manufacturing route and finishing process all influence whether the final part will assemble correctly and remain consistent when production volume increases.
A custom CNC AN fitting is manufactured around a specified connection, hose or fluid-system design rather than being selected only by exterior appearance. Your drawing can define the dash size, thread, flare or sealing geometry, port direction, material, finish and other mating features required by the final assembly.
From a manufacturing perspective, the important issue is not simply creating the correct outside shape. The thread, seat, bore, shoulder and connected port must remain in the correct relationship to one another so the finished fitting can mate with the intended component.
AN fitting designs can be classified by connection style, flow direction, hose type and assembly structure. A project may include straight fittings, elbows, tees, Y-block splitters, reducers, bulkhead fittings, swivel adapters, push-lock hose ends, PTFE hose ends, AN-to-NPT adapters, AN-to-ORB adapters or special quick-connect interfaces.
Different structures require different manufacturing routes. A straight reducer may be primarily turned, while a Y-block or multi-port fitting can require milling or multi-axis machining. A swivel hose end may also require several separately machined components followed by controlled assembly.
Material should be selected from the complete application rather than from one property alone. You should consider the fluid or gas being transported, operating temperature, corrosion exposure, pressure and mechanical load requirements, weight targets, surface finishing and the mating components used in the final assembly.
Aluminum is widely suited to lightweight automotive and performance fittings and also accepts anodized finishes. Stainless steel can be considered where corrosion resistance, strength or durable threads are more important than weight. Brass may be useful for selected fluid-interface parts, while titanium can support weight-sensitive or corrosion-resistant applications. PTFE and other engineering plastics may be selected for specific sealing, liner or fluid-contact components.
The exact grade and condition should always follow your approved drawing and application specification.
AN fittings are connection components, so the features that touch another part are usually more important than the external cosmetic shape. Thread geometry determines engagement, while the specified flare, seat, O-ring groove or other sealing feature determines how the interface is intended to seal.
These features should not be inspected in isolation when their relationship affects function. The thread axis, sealing surface, bore and shoulder may need to be machined or referenced from a common datum structure so the assembled components remain aligned.
This becomes particularly important when a fitting is anodized or plated. Surface treatment can alter functional dimensions, which is why coating allowance, masking and post-finish verification should be considered before machining begins.
The manufacturing route depends on the geometry of the fitting. CNC turning is effective for cylindrical bodies, threads, seats, shoulders and concentric bores. Turn-mill equipment can combine these rotational features with flats, cross-holes and milled ports in fewer setups.
Block, tee and Y-shaped fittings often require CNC milling. When multiple ports are located at complex angles, 5-axis machining can reduce repositioning and help maintain relationships between features.
After the primary machining operations, internal intersections and thread exits may require controlled deburring and cleaning. Finishing, inspection and assembly are then performed according to the requirements of the individual project.
Machining every fitting completely from bar or billet is not always the best route for higher-volume programs. When part geometry, alloy and production quantity are suitable, a forged blank can form much of the external geometry before precision machining.
CNC machining is still used after forging for the features that require controlled dimensional relationships, including threads, sealing interfaces, bores, shoulders and mating diameters.
The decision should be made after comparing tooling cost, expected production quantity, material utilization, geometry and the dimensional requirements that must be achieved after forging.
Aluminum AN fittings frequently use anodizing when corrosion protection and color are required. Type II anodizing can provide decorative and protective finishes, while hard anodizing may be specified where different surface performance is needed.
Stainless-steel fittings may use passivation or polishing, while electroless nickel and other coatings can be specified for suitable metal components. Bead blasting or sand blasting may be used as a controlled surface-preparation process, and laser engraving can add part numbers, size markings or branding.
Finishing should be included in the dimensional plan. Threads, sealing faces, bores and mating diameters may require masking, allowance or verification after coating.
Inspection should follow the features most likely to affect your final assembly. Thread gauges can verify specified threaded interfaces, while dimensional inspection can confirm bores, shoulders and mating diameters. CMM measurement may be appropriate for related port locations, angular features or other geometry that cannot be checked efficiently with conventional gauges.
Internal passages should also be considered because intersecting bores and cross-holes can retain burrs or machining debris. Visual, dimensional and cleanliness requirements should therefore be incorporated according to the fitting design.
If the application requires leak or pressure verification, define the test medium, pressure, test time, acceptance limit and inspection frequency on the drawing or quality specification.
Many hose ends contain multiple machined and purchased components such as sockets, swivel nuts, seals, retaining rings and formed tubes. Their final function depends on the geometry of the individual parts and the way they are assembled together.
Seal grooves must allow the specified O-ring or sealing element to install correctly. Retaining grooves and shoulders must hold components in position, while swivel interfaces should provide the movement or retention specified in the design.
For projects that require assembly, the BOM, component specifications, lubricant or installation requirements and acceptance checks should be agreed before production.
A complete RFQ gives manufacturing engineers enough information to evaluate machining and production risks before quotation. Ideally, send both a 2D drawing and 3D model together with the material, quantity, surface finish and application information.
Clearly identify the thread or mating interface, important datums, critical dimensions, sealing features and any components that the new fitting must connect to. If you have inspection reports, mating drawings or an existing sample, these can also help clarify the interface.
If pressure, leakage, cleanliness, assembly or documentation requirements apply, include them in the RFQ instead of waiting until production has started.
Cost is influenced by more than the amount of metal in the part. Multiple setups, complex angled ports, intersecting bores, difficult internal deburring, special threads, surface-finishing requirements, tight relationships between features and additional inspection can all increase manufacturing effort.
Production quantity can also change the most economical manufacturing route. Low-volume prototypes may be machined directly, while a suitable higher-volume design may justify forging, dedicated fixtures or other process optimization after engineering review.
The most effective step is to review the complete mating interface before production. Confirm which component the fitting connects to, how the hose is routed, which surfaces provide sealing, which dimensions can change after finishing and which characteristics must be inspected.
Prototype parts can then be used to validate assembly, routing, thread engagement and finish. Once these conditions are approved, they can be carried into the repeat-production process rather than reinterpreted for every batch.
Send your drawing, material, quantity, mating-interface details, finish and inspection requirements. We will review the machining and assembly risks and help you define a practical route from prototype validation to repeat production.
2024-08-02
The manufacturer is strongly recommended. In the past few years of cooperation we have ordered several machined products from aluminum and stainless steel. These products are manufactured in compliance with tolerance requirements and require product finish. Now I have ordered another one. The service is excellent and any questions can be answered and resolved in time.
2021-05-13
The dimensions are all customized according to my drawings no tolerance issues and the parts are delivered on time. I am very satisfied with it.
2021-04-06
I pay much attention to the surface treatment aspect of this product. I was a little worried about the cooperation at the beginning. I am very satisfied with the product now and hope to cooperate for a long time.
2022-09-22
AN8 Straight PTFE Hose End Fitting for PTFE Fuel Line Fitting Adapter Black Blue Red
+86 15099911516
