We manufacture custom OEM brass brake line fittings such as brass brake line elbows, tees, Y connectors, unions, adapters, and tube nuts. We make brass brake line fittings according to customer requirements, drawings, and samples.
Our regular and common brass grade is Alloy 360 Free Cutting Brass. We also manufacture according to customer material requirements.
We provide samples and small batches for testing before mass production, but very low quantities and small-run orders are not supported.
Brass brake line fittings are used to join and seal different components in a vehicle brake system. They are important components that connect rigid brake lines, flexible brake hoses, master cylinders, and calipers.
Common brass brake line fittings include tees, elbows, adapters, unions, Y connectors, and tube nuts. Brass provides good corrosion resistance, machinability, and durability for brake line components.
Finish: Natural Brass
Configuration: Straight adapter
Male Thread: 1/8" NPT
Tube Size 5/16" OD
Connection Type: Inverted flare
Body Type: Hex adapter
Brass straight adapter with 1/8" NPT male thread and 5/16" OD tube inverted flare connection. Used to connect a 5/16-inch brake line to a
female NPT threaded port.
Configuration: Male threaded plug
Male Thread: 1/4" NPT
Head Style: Hex head
Connection Type: Inverted flare
Design: Closed-end plug
Brass 1/4" NPT hex head plug used to seal unused threaded ports in brake line systems. The plug prevents brake fluid leakage and closes unused connection points during assembly and service.
Tube O.D.: 3/16"
Male Thread: 1/8
Configuration: 45° Male Elbow
Hex Size (C): 7/32"
Brass 45° male elbow fitting with 1/8 pipe thread and 3/16-inch tube connection. The angled body provides
a 45-degree brake line outlet where a straight fitting does not provide sufficient clearance.
Male Thread: 1/8" NPT
Female Thread: 1/4"
Body Type: Elbow fitting
Overall Length: 23.25 mm
Body Size: 13.7 mm
Application: hydraulic brake
Brass inverted flare elbow fitting with male and female threaded flare connections. Used to connect brake,
fuel, and transmission lines to threaded ports. The inverted flare seat provides a metal-to-metal seal, while
the male thread installs into a threaded fitting.
Bottom Port: 3/8-24" Thread, Inverted flare female
Side Port: 3/16" thread
Mouting Port: Ø7 mm
Overall Height: 31.65 mm
Application: Fitting tee brake axle
Brass brake line tee fitting with inverted flare female side ports, a female threaded branch port,
and an integrated mounting hole. Used on axle brake systems where multiple brake lines join through a single fitting.
Thread: 3/16"
Outside diameter: Ø15.22 mm
Application: Brake line master cylinder connection
Brass brake line Y fitting designed for master cylinder brake line connections.
The component features two threaded brake line ports and a rear mounting hole for a banjo bolt connection.
Inverted flare-style seats are machined inside the fitting
We manufacture OEM brass brake line fittings according to customer requirements and product drawings. Standard products include brass brake line unions, elbows, tees, Y connectors, Four-way, adapters, and tube nuts. We manufacture both SAE and metric brake line fittings.
Brass brake line elbows are used to change brake line direction in limited installation space. Applications are brake line routing and compact chassis installations. Common sizes are 1/4" and 3/16".
Used to connect two brake line sections using matching flare and thread types. Mostly used in brake line repair and extension. Common sizes are 3/16" (4.75 mm) and 1/4".
Creates a brake-line branch connection. Used in brake line junctions and trailer brake tees. The most common size is 3/16", mostly used in passenger vehicles.
Brass brake line adapter fittings Connects different thread sizes and flare types. Applications are thread adaptation and flare-style conversion.
A brass tube nut is used to tighten a flared tube into a matching flare fitting body. Mostly used applications are flared brake-line connections and tube-to-fitting joints.
Used to seal an unused brake-line opening. Mostly used for port blocking and unused line sealing.
For multiple brake line outlets from a single connection point. Commonly used in buses, commercial vehicles, and industrial brake systems.
Used to connect brake line sections and related brake system components. Available in different thread and fitting configurations according to application requirements.
Used to join brake line sections with matching thread and flare types. Commonly used in hydraulic line connections and brake system assemblies.
| Type | Common Size |
|---|---|
| Brake Tube Outside Diameter | 3/16" (4.75 mm) |
| Brake Tube Outside Diameter | 1/4" (6.35 mm) |
| Metric Thread | M10 × 1.0 |
| Metric Thread | M12 × 1.0 |
| SAE Thread | Various depending on fitting type and flare standard |
Thread size, tube size, and flare type must match the brake system specification.
Brass is preferred for automobile and brake line fittings because brass material provides corrosion resistance and machinability. Brass is softer than steel, which allows a tight, leak-free seal and helps resist rust. Common grades used in brass brake line fittings are C36000 (Free-Cutting Brass) and C37700 for high-strength applications.
Here are a few benefits of brass material for brake line fittings:
Steel is not rust-proof, but brass provides good corrosion resistance. Brass can be used in moisture and road salt conditions. This helps keep the threads from seizing and makes maintenance easier.
Brake systems face vibration and temperature changes. Brass can be used in these conditions and is commonly used in brake line fittings.
Brass is softer than steel. When tightened, the fitting conforms to the tubing flare and helps create a leak-tight seal against hydraulic brake fluid.
In brass brake line fittings, natural finish is common after cleaning, and nickel plating is also used. We support both finishes.
| Finish | Description |
|---|---|
| Natural Brass | Standard brass surface finish without additional plating. |
| Nickel Plated | Nickel coating applied to brass brake line fittings for additional surface protection and appearance. |
| Control Item | Details |
|---|---|
| Raw Material Sourcing | Brass raw materials sourced according to specified material requirements. |
| Material Verification | Material certificates supported according to customer and order requirements. |
| Machining Operations | CNC Turning , milling, threading, drilling, chamfering, and other machining operations performed according to part requirements. |
| Secondary Operations | Deburring and manual secondary operations performed where required. |
| Thread and Dimensional Inspection | Thread size, thread fit, and critical dimensions verified using measuring instruments and gauges. |
| Sample Development | Samples can be provided before mass production for testing and approval. |
| Surface Finish and Plating Support | Nickel plating and other specified surface finishes supported through trusted processing partners. |
We manufacture brass brake line fittings according to customer requirements. We do not sell standard parts and do not maintain stock.
| OEM Manufacturing Support | Details |
|---|---|
| Custom Manufacturing | Manufactured according to customer drawings and samples |
| Production Volume | Medium and high production runs supported. Very low-volume production orders are not accepted. |
| Sample Development | Samples and small batches can be provided for testing and approval before mass production. |
| Custom Requirements | Threads, dimensions, material grades, and finishes can be produced according to customer requirements. |
| MOQ | According to product drawing and specification |
| Lead Time | Approximately 4-5 weeks for bulk orders |
| Packaging | Export cartons, bulk packs, and custom labelling as per requirements |
| Packaging Option | Details |
|---|---|
| Bulk Packaging | Parts packed in bulk cartons according to order quantity. |
| Custom Packaging | Custom labeling and packaging supported according to customer requirements. |
Brass is preferred for brake line fittings because it is workable, corrosion-resistant, and has good machinability.
The most common brake line tubing sizes are 3/16 inch (4.75 mm) and 1/4 inch (6 mm). Brass brake line fittings are available for different tubing sizes. Thread size depends on the fitting design, and the flare type must match the brake line connection.
Both materials are common in brake line fittings. Brass is selected when the application needs corrosion resistance and machinability, and steel is chosen where higher mechanical strength is required.
Neither material is universally better. The selection depends on the application requirements. Material selection should match the brake system design, fitting specification, and service environment.
Yes, the tubing material alone does not determine compatibility. The flare type, thread size, and fitting configuration must also match the brake system requirements.
To request a quotation for brass brake line fittings, please send your drawing or sample.
Please include the following information:
After receiving the RFQ, we review all details. If clarification is required, we contact the customer before quotation. Quotation, estimated lead time, and shipping details are shared based on the confirmed scope.
