Custom Brass Fittings Manufacturer & Supplier
We are an OEM custom brass fittings manufacturer to customer drawings and specifications. Make brass fittings such as brass elbow, tee, connector, plug, coupling, union, cap, bushing, nipple, and reducer. We manufacture brass threaded fittings (brass pipe fittings), brass hose fittings, brass compression fittings, and brass flare fittings.
We manufacture brass fittings using brass material grades according to customer requirements. Brass fittings are manufactured through forging and CNC machining according to part requirements. Additional machining operations such as drilling, tapping, threading, chamfering, and deburring are performed as required. We support both metric (mm) and imperial (inch) sizes.
Brass fittings are mostly used in plumbing, water supply, gas distribution, irrigation, HVAC, and pneumatic systems. We supply OEM brass fittings to manufacturers, distributors, and industrial buyers across the USA, Europe, the UK, and Asia.
Request a Quote Today for Custom Brass FittingsWhat Are Brass Fittings?
Brass fittings are components made from brass used to connect, redirect, branch, reduce, terminate, and adapt pipes and tubing in plumbing, HVAC, pneumatic, gas distribution, and industrial fluid systems. Brass fittings provide corrosion resistance, strength, durability, and help create reliable sealed connections.
Brass Fittings Specifications & Capabilities
| Item | Details |
|---|---|
| Material | Brass material grades according to customer drawings, specifications, and application requirements |
| Manufacturing Process | CNC turning, hot forging where required, and CNC milling according to part requirements. Drilling, tapping, threading, chamfering, and deburring performed as required |
| Inspection Equipment | Vernier caliper, micrometer, thread plug gauge, go/no-go gauge, thread ring gauge, height gauge, bore gauge, and partner-provided CMM, surface roughness tester, and profile projector where required |
| Documentation | Material Certificate and Dimensional Inspection Report on request |
| Production Volume | Prototype / sample before batch (1–10 pcs) Medium and repeat OEM production preferred Standalone very small orders not supported |
| Dimensions | Custom dimensions according to customer drawings |
| Thread Standards | BSP, BSPT, NPT, Metric, and customer-specified thread types |
| Thread Sizes | According to part drawing and application requirement |
| Finish | Natural brass, nickel plating, chrome plating, and customer-specified finishes |
| Tolerance | General machining tolerance: ±0.1 mm Tighter tolerances reviewed case by case |
| MOQ | Depends on product drawing and part complexity |
| Packaging | Bag, carton, pallet, and custom packaging |
| Drawings Accepted | STEP, PDF, DXF, and DWG files |
| Tooling Ownership | Custom tooling is customer-owned and is not reused for other customers |
Our Recent OEM Brass Fittings Projects
Custom Brass 45 Degree Flare Tee Fitting
Product Type : 45 Degree Flare Tee Fitting
Thread Size : 7/16"-20 UNF
Tube OD : 1/4"
Overall Width : 1.72"
Center to End : 0.86"
Height : 0.86"
Minimum Bore (ID) : 0.189"
Connection Type : 45° Flare
Manufacturing Process : Forging and CNC Machining
Custom 45 degree brass flare tee fitting with three flare connections for 1/4" OD tubing and 7/16"-20 threads. The fitting features an overall width of 1.72", 0.86" center-to-end dimension, 0.86" overall height, and 0.189" minimum bore. Manufactured according to customer drawings and dimensional specifications. The fitting provides a three-way branch connection for 45° flare tubing in fuel, gas, and refrigeration.
Custom Brass Female Threaded Cross Fitting
Product Type : Brass Female Threaded Four Way Cross
Fitting Family : Brass Threaded Pipe Fittings
Connection Type : Female Thread × Female Thread × Female Thread × Female Thread
Thread Size : G 1/4-19 DIN ISO
Overall Length : 36.50 mm
Port Outside Diameter : 15.50 mm (All Ports)
Hex Thickness : 9 mm
Manufacturing Process : Hot Forging and CNC Machining
Custom brass female threaded cross fitting manufactured with four G 1/4-19 DIN ISO female threaded ports, 36.50 mm overall length, and 15.50 mm outside diameter on all ports. The fitting provides a four-way threaded connection for branching fluid and gas lines in plumbing and industrial piping systems.
Custom Brass Flare Elbow Fitting
Product Type : 45 Degree Flare Elbow Fitting
Connection Type : 45° Flare × Female NPT
Thread Size (Flare): 7/16"-20 Thread for 1/4" Tube OD
Thread Size (Female Port) : 1/8 NPTF Pipe Size, 27 Threads Per Inch
Thread Engagement : 0.26"
Configuration : 90° Elbow
Center to End : 0.86"
Height : 0.50"
Minimum Bore (ID) : 0.189"
Manufacturing Process : Forging and CNC Machining
Custom brass 45 degree flare elbow fitting manufactured with a 7/16"-20 flare thread for 1/4" OD tubing and a 1/8 NPTF female pipe thread (27 TPI). The fitting features a 45° flare seat, 0.86" center-to-end dimension, 0.50" overall height, 0.189" minimum bore, and 0.26" thread engagement. Manufactured through forging and CNC machining with a natural brass finish according to customer drawings. The fitting changes the direction of tubing and connects a 45° flare tube to a female NPT threaded port for plumbing, gas, HVAC, and fluid systems.
Custom Brass Union Fittings
Product Type : Brass Male Flare Union
Connection Type : Male Flare × Male Flare
Thread Size : 5/8" BSP × 5/8" BSP
Overall Length : 50 mm
Maximum Outside Diameter : 24 mm
Hex Thickness : 9 mm
Manufacturing Process : CNC Turning from Hex Brass Rod
Custom brass male flare union manufactured with 5/8" BSP male threads on both ends, 50 mm overall length, 24 mm maximum outside diameter, and 9 mm hex thickness. Manufactured by CNC turning from hex brass rod with a natural brass finish. The union connects two flare fittings or tubing connections while allowing easy assembly and disassembly for maintenance and replacement.
Types of Brass Fittings
Brass Pipe Fittings
Brass pipe fittings are sometimes called brass threaded fittings or brass plumbing fittings. Brass pipe fittings are durable metal connectors used in plumbing, heating, gas, and pneumatic systems to connect pipes securely. They feature precision male and female threads with thread standards such as BSP and NPT. Common brass pipe fittings products are brass pipe elbow, tee, connector, reducer, plug, coupling, socket, hex bushing, and four-way connector.
Brass Flare Fittings
Brass flare fittings are vibration-resistant connectors used to join soft metal tubing in gas, fuel, refrigeration, and HVAC systems. They create a tight metal-to-metal seal using a specially flared tube end and a threaded flare nut, without requiring sealants at the flare seat. Over-tightening can damage the tube. Common flared pipe fittings are brass flare elbow, tee, connector, and four-way.
Brass compression fittings
Brass compression fittings are mechanical couplings used to join pipes without soldering, heating, and welding. They have three main parts: a fitting body, a compression nut, and a brass ferrule (ring) that compresses around the pipe to form a reliable seal when tightened.
Main advantages of brass compression fittings: easy to install, no heat needed, and compatible with various tubing materials. Mostly used in plumbing, gas, fuel lines, heating, and pneumatic systems. Common brass compression fittings are brass compression tee, elbow, coupler, reducer, and cap.
Bras hose fittings
Brass hose fittings are threaded or barbed connectors used to attach flexible hoses to pipes, valves, and nozzles. Unlike compression fittings, hose barb fittings are specifically designed to grip flexible tubing and withstand vibration and movement common in hose applications. Common brass hose fittings are hose barbs, garden hose thread adapters, barb elbow, swivel adapters, manifolds, Y-splitters, and barb tee.
Common brass fitting products
We make different custom brass fittings according to the customer's drawing. Brass fittings are a wide variety of products in different shapes. Each shape performs a different function in piping systems. The same fitting shapes may be available in threaded, compression, flare, and hose fitting designs depending on the application.
Brass Elbow
A brass elbow is an L-shaped connector that joins two pipes at an angle. The primary function of an elbow is to change the direction of fluid and gas flow within a piping network. Common brass elbow is 90 degree elbow, 45-degree elbow, street elbow (male-to-female threaded), and reducing elbow.
For more details, visit our Brass Elbow product page.
Brass Tee
A T-shaped, three-way branch connector is used to combine and split the flow of fluid and gas within a piping system. main purpose of Brass Tee fittings is to allow a pipeline to branch off into a new direction while maintaining the original straight run. Common brass tee fittings are equal/ straight tee, reducing tee, male-female threaded tee, and compression tee.
For more details, visit our Brass Tee product page.
Brass coupling
A brass coupling is a short, straight connector used to link two pipes of equal or different sizes. Main use of a brass coupling is to extend a straight piping run. Common brass coupling is straight/full coupling, reducing coupling, slip/repair coupling, and half coupling.
For more details, visit our Brass coupling product page.
Brass Union
A three-piece coupling (male end, female end, and union nut) that connects two pipes and can be detached without disturbing the rest of the piping system. The main use of a brass union is to allow quick assembly, disassembly, and maintenance of the pipeline for future repairs. Common types of brass unions are straight union, reducing union, dielectric union, and threaded-to-socket union.
Brass Plug
A brass plug is a solid, male threaded fitting inserted into the open end of a female threaded opening to seal closed. main function of a brass plug is to terminate a pipeline and block a specific port permanently or temporarily to stop the flow of fluid and gas. Common types are hex plug, square head plug, coutersunk/allen head plug, and threaded plug.
Brass Cap
Brass cap is a female-threaded fitting used to seal the end of a pipe. The primary function of a brass cap is to close and terminate the end of a pipeline to prevent the flow of fluid and gas. Common types of brass caps are threaded cap (NPT/BSP), hex cap, protective cap, compression cap, and round/flat end cap.
Brass Reducer
A brass reducer is a dual-ended fitting designed with different-sized connections on each side to join two pipelines of unequal diameters. Its primary function is to transition a piping system from a larger diameter to a smaller diameter and connect different pipe sizes. Common brass reducer types are hex bushing (Male-to-Female Reducer), reducing Coupling (Female-to-Female Reducer), bell reducer, and reducing hose barb.
Brass Bushing
A brass bushing is a compact, nested fitting with male threads and smaller female threads on the inside. A brass bushing enables a direct reduction in line size by screwing directly inside a larger female port to accept a smaller male pipe. Common brass bushing fittings are hex bushing and flush (face) bushing.
Brass nipple fittings
Brass nipple fittings are straight, short lengths of brass pipe with male threads at both ends and are used to connect two other components. The primary function of a brass pipe nipple is to connect two female-threaded fittings and extend a piping connection. Common brass nipple fittings are brass hose coupling, full-threaded close nipple, hex nipple, long nipple, and reducing nipple.
Brass Four-Way (Cross) Fittings
A brass four-way cross connector is a multi-directional pipe fitting with four openings positioned to distribute fluid and gas through four connected lines. Common configurations are equal cross, reducing cross, male threaded, and female threaded. Four-way connectors are commonly used in pneumatic and plumbing systems.
Brass Fittings Application
Brass fittings are used in a wide range of residential, commercial, and industrial applications. Different types of brass fittings are selected according to the piping system, operating conditions, and application requirements.
1. Plumbing Systems
Brass fittings are used in residential and commercial plumbing applications. Mostly used for hot and cold water systems because of their durability, compatibility and corrosion resistance. Brass elbow, tee, coupling, and union are mostly used.
2. Water Supply Systems
Brass fittings are used in water supply systems such as service connections, pumps, filtration, irrigation, tanks, and building water supply systems. Brass fittings are used in water supply systems because they provide good corrosion resistance, long service life, and durability.
3. Gas Distribution
Brass fittings are used in gas distribution systems such as LPG, natural gas, gas meters, and regulators. Brass fittings used in gas systems should be suitable for gas service according to application requirements.
4. HVAC & Refrigeration
Brass compression fittings and brass flare fittings are used in refrigerant lines, heating, cooling, and air conditioning systems.
5. Pneumatic Systems
Brass threaded fittings and brass compression fittings are used in pneumatic systems such as compressed air, automation, machinery, and air tools.
6. Industrial Fluid Systems
Brass threaded fittings are used in industrial fluid systems such as processing equipment, machinery, fluid transfer, and OEM equipment.
Brass Fittings Materials and Grades
We manufacture brass pipes and fittings according to customer requirements. Brass fittings are manufactured from different grades. Different grades provide different machinability, strength, corrosion resistance, and forging properties. Material grades are selected according to customer drawings and specifications.
1. C36000 Free Cutting Brass
Common and free-cutting brass grade. C36000 brass provides excellent machinability, dimensional accuracy, and good corrosion resistance. Usually used for brass threaded fittings, nipples, bushings, couplings, and precision turned fittings.
2. CW614N
Equivalent to C36000 and mostly used in Europe. CW614N provides excellent machinability. Usually used in CNC-turned brass fittings, plumbing fittings, and pneumatic fittings.
3. CW617N
CW617N brass is selected because it forges well, has higher strength than free-cutting grades, and is mostly used in forged valve bodies and brass forged fittings.
4. IS 319
IS 319 Type 1 is a free-cutting brass grade in India and is commonly equivalent to C36000. General engineering brass grade and mostly used in plumbing and industrial fittings.
5. Lead-Free Brass
Lead-free brass grades are CW510L and C69300. Used in potable water systems and applications requiring RoHS compliance.
Brass Fittings Thread Standards and Connection Types
We manufacture brass fittings with different thread standards and connection types according to customer drawings, and specifications. You have to select the correct thread standard and connection type to ensure compatibility with the mating component. The thread standard must match the mating component.
Brass Fittings Thread Standards
| Thread Standard | Description | Common Markets | Typical Applications |
|---|---|---|---|
| BSPP | British Standard Pipe Parallel thread | Europe, Asia, Australia | Plumbing, pneumatic, hydraulic |
| BSPT | British Standard Pipe Taper thread | Europe, Asia, Australia | Plumbing, gas, industrial piping |
| NPT | National Pipe Taper thread | USA, Canada | Industrial, hydraulic, pneumatic, gas |
| Metric | ISO Metric thread | Worldwide | Machinery, automotive, industrial equipment |
Brass Fittings Connection Types
| Connection Type | Description | Common Applications |
|---|---|---|
| Male Thread | External threaded connection | Pipe fittings, valves |
| Female Thread | Internal threaded connection | Pipe fittings, manifolds |
| Compression | Ferrule-based mechanical seal | Plumbing, instrumentation, pneumatic |
| Flare | Metal-to-metal flared tube connection | HVAC, refrigeration, fuel, instrumentation |
| Hose Barb | Barbed connection for flexible hose | Water, air, fuel, irrigation |
Brass Fittings Manufacturing and Quality
We manufacture custom brass fittings according to customer drawings and specifications. Every batch passes through quality inspection before dispatch.
Brass Fittings Manufacturing Process
| Process | Description |
|---|---|
| Raw Material | Brass rods or forging material according to customer specifications |
| Hot Forging | Used for forged fittings where required |
| CNC Turning | Precision machining of threaded and CNC turned parts |
| CNC Milling | Cross holes, slots, flats, and special features |
| Drilling & Tapping | Secondary machining operations |
| Threading | BSP, BSPT, NPT, Metric |
| Deburring | Remove sharp edges |
| Surface Finish | Natural brass, nickel, chrome, or as per customer specification |
| In-Process Inspection | Dimensional and thread inspection during production |
| Final Inspection | Dimensional, thread, and visual inspection before dispatch |
| Packing | Cleaned and packed according to customer requirements |
Quality Control
| Inspection | Purpose |
|---|---|
| Incoming Material Inspection | Verify material grade. Material test certificate available on request. |
| In-process Inspection | Dimensional checks during production. |
| Final Inspection | Verify finished parts before dispatch. |
| Thread Inspection | BSP, BSPT, NPT, and Metric thread gauges. |
| Visual Inspection | Check for surface defects and machining quality. |
| Packaging Inspection | Verify packing before shipment. |
Brass Fittings FAQ
1. Does nickel plating improve corrosion resistance?
Yes. Nickel plating improves the corrosion resistance and surface durability of brass fittings, while also providing a brighter appearance. The appropriate surface finish depends on the application, operating environment, and customer requirements.
2. Can brass fittings be used for potable water?
Yes, but it depends on the brass material grade and local regulations. Potable water systems typically require lead-free brass that complies with applicable drinking water standards. Always specify the application when ordering brass fittings.
3. Can BSP and NPT brass fittings be connected together?
No. BSP and NPT are different thread standards with different thread profiles, angles, and sealing methods. Although they may partially thread together, they are not interchangeable and should be connected only by using a suitable BSP-to-NPT adapter.
4. How do I identify the correct brass fitting size?
Identify the fitting size by checking the thread standard, nominal thread size, and connection type. Measuring only the outside diameter is not sufficient because pipe thread sizes are nominal rather than actual dimensions. Refer to the equipment specification, drawing, and existing fitting before ordering.
5. Which brass material grade should I choose?
The material grade depends on the application and customer requirements. C36000 and CW614N are commonly selected for precision-machined fittings because of their excellent machinability, while CW617N is widely used for forged brass fittings. Lead-free brass grades are preferred where drinking water regulations require them.
6. Which surface finish is suitable for brass fittings?
The suitable surface finish depends on the application and operating environment. Natural brass is commonly used for general industrial applications, while nickel plating provides improved corrosion resistance and appearance. Chrome plating is typically selected where decorative appearance and additional surface protection is required.
7. How do I choose between threaded, compression, flare, and hose fittings?
Choose the fitting type according to the connection method and application. Threaded fittings are commonly used for pipe connections, compression fittings for tubing without welding, flare fittings for high-integrity metal tube connections, and hose fittings for flexible hose connections. Select the fitting that matches your piping system and operating requirements.
8. Can brass fittings connect different pipe sizes?
Yes. Brass fittings such as reducing couplings, reducers, reducing bushings, and reducing nipples are specifically designed to connect different pipe sizes. Select the appropriate reducing fitting according to the required pipe sizes and thread standards.
Request a Custom Brass Fittings Quote
To request a brass fittings quotation, send your STEP (3D) file along with a PDF drawing and RFQ details.
Please include:
- Material specification
- Thread standard (BSP, BSPT, NPT, Metric, etc.)
- Quantity requirement (one-time, repeat, or blanket order)
- Surface finish requirement
- Required delivery timeline
- Shipping terms (EXW, FOB, CIF, DAP, DDP)
Send your RFQ and drawings to receive a quotation with pricing and an indicative lead time.
