screws › machine screws
NAS1801-04-13
Machine Screw
Description
Machine Screw
Specifications
| Fastener Length | 0.807 inches minimum and 0.844 inches maximum |
|---|---|
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Height | 0.049 inches minimum and 0.060 inches maximum |
| Head Style | Hexagon Head |
| Internal Drive Style | Cross recess type 1 |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Screw Material | Steel comp 4340 or steel comp 8740 |
| Screw Material Specification | Mil-s-5000 mil spec 1st material response or ams 6322 assn std 2nd material response |
| Specification Data | 80205-nas1801 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.757 inches minimum and 0.844 inches maximum |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNJC |
| Width Between Flats | 0.181 inches minimum and 0.189 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1801-04-13. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error