screws › close tolerance screws
NAS1143-1
Close Tolerance Screw
Description
Modified Pan Head Machine Screw
Specifications
| Country of Origin | USA |
|---|---|
| Drive Style | Torq |
| Fastener Length | Between 0.323 inches and 0.353 inches |
| Grip Diameter | Between 0.1885 inches and 0.1895 inches |
| Grip Length | Between 0.052 inches and 0.072 inches |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.361 inches and 0.385 inches |
| Head Height | Between 0.103 inches and 0.118 inches |
| Head Style | Pan Head |
| Internal Drive Style | Offset cruciform (torque set) |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 00-941-6409 |
| NSN | 5305-00-941-6409 |
| Sold In | Per Package |
| Specification Data | 80205-nas1143 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 cl 3 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.251 inches and 0.301 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 10 |
| Weight | .005 lb |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1143-1. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error