bolts › close tolerance bolts
NAS1189E4P12
Close Tolerance Bolt
Description
Fastener Length: 3/4", Thread: 1/4-28, Thread Length: 3/4
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Fastener Length | Between 0.729 inches and 0.750 inches |
| Head Diameter | Between 0.491 inches and 0.507 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 3/4 |
| Locking Feature | Patch threads or pellet threads or strip threads |
| Material | Iron |
| Material Specification | Ams 5737 assn standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1189 professional/industrial association standard |
| Surface Finish | 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.658 inches and 0.750 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1189E4P8B
- NAS1189E4P9L
- NAS1189E4P12
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1189E4P12. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error