bolts › close tolerance bolts
NAS1581F5T18
Bolt
Description
Fastener Length: 1-41/64", Thread: 1/4-24, Thread Length: 1/2"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.611 inches minimum and 1.641 inches maximum |
| Grip Diameter | 0.311 inches minimum and 0.312 inches maximum |
| Grip Length | 1.115 inches minimum and 1.135 inches maximum |
| Head Diameter | 0.429 inches minimum and 0.479 inches maximum |
| Head Height | 0.070 |
| Head Style | Flat countersunk undercut |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 1 41/64 |
| Material | Steel |
| Specification Data | 80205-nas1581 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty ii,cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.491 inches minimum and 0.511 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| 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.
- NAS1581F5T8
- NAS1581F5T12
- NAS1581F5T15
- NAS1581F5T18
- NAS1581F5T19
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1581F5T18. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error