screws › machine screws
NAS1801-08-20
Hex Head Screw
Description
Hex Head Screw
Specifications
| Bolt Head Shape | Hexagon |
|---|---|
| Country of Origin | USA |
| Fastener Length | Between 1.234 inches and 1.281 inches |
| Hardness Rating | Between 36.0 rockwell c and 40.0 rockwell c |
| Head Height | Between 0.096 inches and 0.110 inches |
| Head Style | Hexagon Head |
| Head Type | Cruciform Recess |
| Industry Standards/Certification | NAS1801 |
| Internal Drive Style | Cross recess type 1 |
| Length | 1.250 in |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 01-202-3404 |
| NSN | 5305-01-202-3404 |
| Screw Material | Steel comp e4340 or steel comp 8740 |
| Screw Material Specification | Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or ams6322 assn standard 2nd material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Cl2 federal specification single treatment response ty2 qq-p-416 |
| Sold In | EA |
| Specification Data | 80205-nas1801 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.164 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.172 inches and 1.281 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNJC |
| Thread Size | 8-32 |
| Thread Type | Full Thread |
| Weight | 0.007 lb |
| Width Between Flats | Between 0.243 inches and 0.251 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1801-08-20. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error