screws › machine screws
NAS1802-4-28
Screw
Description
Fastener Length: 1-25/32", Thread: 4-40, Thread Length: 1-3/4"
Specifications
| Fastener Length | 1.734 inches minimum and 1.781 inches maximum |
|---|---|
| Head Height | 0.049 inches minimum and 0.060 inches maximum |
| Head Style | Hexagon Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 25/32 |
| Material | Iron |
| Screw Material | Iron alloy 660 |
| Screw Material Specification | Ams5732,a286 assn std 1st material response or ams5737, 286 assn std 2nd material response |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Specification Data | 80205-nas1802 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 1.781 |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNJC |
| Thread Size | 4 |
| Width Between Flats | 0.181 inches minimum and 0.189 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1802-4-28. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error