5/8 in. x 1/2 in. Push-In x Male NPT DOT Elbow, Composite
5/8 in. x 1/2 in. Push-In x Male NPT DOT Elbow, Composite
Sizes in This Series
Composite D.O.T. push-in x male NPT 90-degree elbows. Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 1/4 in. x 1/8 in. | 690402SC | $5.99 | Add to cart |
| 3/8 in. x 3/8 in. | 690606SC | $11.99 | Add to cart |
| 5/8 in. x 1/2 in. (this page) | 691008SC | $19.99 | — |
Overview
The Midland 691008SC is a D.O.T. 90-degree male elbow joining a 5/8 in. push-to-connect port to a 1/2 in. male NPT thread. Its UV- and vibration-resistant composite body keeps weight and corrosion down on exposed chassis runs, while the one-touch push-in connection seats 5/8 in. air-brake tubing without tools. It is D.O.T. and SAE compliant with a positional swivel for final orientation.
Technical Specifications
| MPN | 691008SC |
| Fitting Type | 90-degree Male Elbow |
| Connection 1 | 5/8 in. Push-to-Connect |
| Connection 2 | 1/2 in. Male NPT |
| Thread Size | 1/2 - 14 |
| Pressure Rating | 145 psi |
| Temperature Rating | -40°F to 140°F |
Materials of Construction
| Body | Composite |
| Compliance | D.O.T. and SAE compliant |
Typical Applications
Used on larger 5/8 in. D.O.T. air-brake lines feeding 1/2 in. ported valves and reservoirs on trucks and trailers. The composite body resists road salt, UV, and vibration, making it a lightweight alternative to brass for exposed under-chassis plumbing where corrosion is a concern.
Cross-Reference and Interchange
This composite D.O.T. elbow cross-references to these competitor and industry part numbers: 016281, 16281, 269PPSCDOT-10D, 369PTC-1-8, 501082, 98811, KV2L15-37S, QL136910D. 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
- Pipe Size Reference Chart
- Teflon Tape vs. Pipe Dope
Frequently Asked Questions
Is this elbow D.O.T. approved?
Yes. The 691008SC is D.O.T. and SAE compliant for commercial-vehicle air-brake use.
What tubing does the push-in end accept?
It accepts 5/8 in. OD D.O.T.-rated air-brake tubing.
Composite or brass — which should I choose?
Composite is lighter and corrosion-free for exposed runs; choose brass (691008SA) for higher temperatures or pressures.
Does the NPT thread need sealant?
Seal the male NPT end with PTFE tape or air-rated pipe dope.
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.