screws › machine screws
NAS1802-4-4
Machine Screw
Description
Fastener Length: 1/4", Thread: 1/4-28, Thread Length: 1/4
Specifications
| Fastener Length | 0.250 |
|---|---|
| Head Height | 0.125 inches minimum and 0.140 inches maximum |
| Head Style | Hexagon Head |
| Internal Drive Style | Cross recess type iii |
| Length | 1/4 |
| Material | Iron |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Screw Material | Iron alloy 660 |
| Screw Material Specification | Ams5731 assn std single material response or ams5732 assn std single material response or ams5737 assn std single material response or ams5853 assn std single material response |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Ams 2700, method 1, type 2 or 8, class 1 assn std single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.250 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.410 inches minimum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1802-4-4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error