1/2 in. x 1/4 in. Composite DOT Male 45 Swivel Elbow
Sizes in This Series
Brass DOT 45-degree push-in swivel male elbows. Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 1/4 in. x 1/4 in. | 540404SA | $10.99 | Add to cart |
| 1/2 in. x 1/4 in. (this page) | 540804SA | $19.99 | — |
Overview
The 540804SA is a 1/2 in. push-in x 1/4 in. male NPT 45-degree swivel elbow in brass, joining 1/2 in. nylon air-brake tubing to a 1/4-18 NPT port through a tool-free push-to-connect collet and a rotating swivel hex. It is DOT FMVSS-571.106 / SAE J1131 approved and rated to 150 psi across -40°F to 200°F.
Technical Specifications
| MPN | 540804SA |
| Fitting Type | 45-deg Swivel Male Elbow |
| Connection 1 | 1/2 in. Push-In |
| Connection 2 | 1/4 in. Male NPT (1/4-18) |
| Pressure Rating | 150 psi |
| Temperature Range | -40°F to 200°F |
| Standard | DOT FMVSS-571.106 / SAE J1131 |
Materials of Construction
| Body | Brass |
| Collet / Seal | Composite collet, O-ring seal |
Typical Applications
Connects a larger 1/2 in. nylon air brake supply line to a 1/4 in. NPT port at 45 degrees on heavy trucks and trailers, where the push-in collet and swivel hex simplify routing in tight chassis locations.
Cross-Reference and Interchange
This 1/2 in. DOT swivel male elbow cross-references to this competitor and industry part number: 279PPSDOT-8B-Y. Replacing one of these? Match nominal size, connections, and rating, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- Push-to-Connect Fittings Selection Guide
- NPT Thread Tightening: Turns Past Hand-Tight
- Teflon Tape vs. Pipe Dope
- Pipe Size Reference Chart
FAQ
Is this DOT approved?
Yes, it meets DOT FMVSS-571.106 and SAE J1131 for air brake systems.
Does the push-in end take 1/2 in. tube?
Yes, it grips 1/2 in. OD nylon air brake tubing with no nut or sleeve.
What is the male thread?
1/4-18 NPT.
WARNING: This product can expose you to chemicals including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.