bolts › close tolerance bolts
NAS334A5
Bolt
Description
Fastener Length: 21/32", Thread: 1/4-28, Head Width: 5/32", Thread Length: 15/32"
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Fastener Length | 0.657 |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.497 inches minimum and 0.507 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Hexagon |
| Length | 21/32 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Surface Treatment | Cadmium and dichromate |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Length | 0.469 inches minimum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Across Flats | 0.157 inches minimum and 0.159 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS334A5
- NAS334A31
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS334A5. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error