Description
Overview:
These male brake nuts are used to secure 1/4" brake pipe (6.35 mm) to components in hydraulic braking systems. With a 7/16" UNF thread and 20 threads per inch (approx. 1.27 mm pitch), they match common automotive and light commercial brake fittings. The hex-head nuts are typically machined from brass for corrosion resistance and reliable sealing when used with correctly formed flares. They are suitable for repairs and new pipe runs on cars, vans, trailers, agricultural and plant machinery that use 1/4" brake lines. Designed to provide a strong, leak-resistant joint at wheel cylinders, flexible hose ends, master cylinders, T-pieces, and unions. A practical choice for both workshop and driveway maintenance. Manufacturer reference often seen as MPN 305 112.
Key Features:
- 7/16" UNF male thread with 20 tpi (approx. 1.27 mm pitch) for standard brake ports
- Suits 1/4" brake pipe (6.35 mm) for a snug, reliable fit
- Brass construction for good corrosion resistance and long service life
- Hex head for secure tightening with common spanners
- Smooth, accurate threads for consistent engagement and sealing
- Designed for use with properly flared brake pipe ends
- Stable under typical hydraulic brake pressures and temperatures
- Helps maintain braking integrity by preventing line movement and leaks
- Ideal for line repairs, custom pipe fabrication, and routine maintenance
- Compatible with copper, copper-nickel (CuNiFer), and steel 1/4" pipe when flared correctly
Typical Applications:
Used to connect 1/4" brake pipe to wheel cylinders, master cylinders, flexible brake hose ends, T-pieces, pressure regulators, and bulkhead unions. Common in automotive repairs, classic car restorations, trailer brake systems, and machinery using 1/4" brake lines. Suitable for building new lines or replacing corroded fittings during MOT preparation and general servicing.
Also known as:
Brake pipe nut, tube nut, male flare nut, inverted flare nut, UNF brake union nut, 7/16-20 tube nut, 1/4" pipe nut, SAE flare nut, male brake line connector, brake pipe union nut.
Product Specifications
| L&S Part No. | 305 112 |
|---|---|
| Unit of Sale | 1 Piece |
