bolts › machine bolts
NAS1004-20A
Bolt
Description
Fastener Length: 1-25/32", Thread: 1/4-28, Thread Length: 17/32"
Specifications
| Fastener Length | 1.794 |
|---|---|
| Features Provided | Finished head |
| Grip Length | 1.250 |
| Head Height | 0.156 |
| Head Style | Hexagon Head |
| Length | 1 25/32 |
| Material | Iron |
| Material Specification | Ams 5737 assn std 1st material response or ams 5733 assn std 2nd material response |
| Min. Tensile Strength (psi) | 140000 pounds per square inch |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Mil-s-5002 mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.544 inches minimum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Between Flats | 0.430 inches minimum and 0.439 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1004-20A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error