bolts › close tolerance bolts
NAS1580C4R21
Bolt
Description
Fastener Length: 1-1/4", Thread: 1/4-28, Thread Length: 1-1/4"
Specifications
| Countersink Angle | 101.0 degrees |
|---|---|
| Fastener Length | 1.312 |
| Grip Diameter | 0.250 |
| Grip Length | 1.312 |
| Head Diameter | 0.464 |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type ii |
| Length | 1 1/4 |
| Material | Steel |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 1.312 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1580C4R21. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error