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NAS1802-3-63
Machine Screw
Description
NAS1802-3-63
Specifications
| Bearing Surface Of Head Surface Finish | 63.0 microinches |
|---|---|
| Fastener Length | 3.922 inches minimum and 3.969 inches maximum |
| Head Height | 0.105 inches minimum and 0.120 inches maximum |
| Head Style | Hexagon Head |
| Internal Drive Style | Cross recess type 1 |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Screw Material | Iron alloy 660 |
| Screw Material Specification | Ams 5731 assn std 1st material response or ams 5737 assn std 2nd material response |
| Specification Data | 80205-nas1802 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 3.890 inches minimum and 3.937 inches maximum |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Surface Finish | 32.0 microinches |
| Width Between Flats | 0.305 inches minimum and 0.314 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1802-3-63. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error