bolts › close tolerance bolts
NAS1790C4R3P
Close Tolerance Bolt
Description
Fastener Length: 39/64", Thread: 1/4-28, Thread Length: 27/64
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Fastener Length | 0.612 |
| Head Diameter | 0.464 |
| Head Style | Flat countersunk |
| Internal Drive Style | Torque set |
| Material | Iron |
| Screw Material | Iron alloy 660 |
| Screw Material Specification | Ams5731 assn standard single material response or ams5732 assn standard single material response or ams5737 assn standard single material response or ams5853 assn standard single material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Class2 federal specification single treatment response type ii qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.425 |
| 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 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1790C4R3P. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error