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NAS1081-4A4
Setscrew
Description
Fastener Length: 1/4", Thread: 1/4-28, Head Width: 1/8", Thread Length: 1/4", NAS1081 series screw
Specifications
| Fastener Length | 0.250 |
|---|---|
| Hardness Rating | 45.0 rockwell c and 53.0 rockwell c |
| Head Style | Headless |
| Internal Drive Style | Hexagon |
| Locking Feature | Pellet threads or strip threads |
| Material | Steel |
| Material Specification | 66 federal standard all material responses |
| Point Style | Flat |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Class 3 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.250 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | Unf (fine thread) |
| Width Across Flats | Between 0.125 inches and 0.127 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1081-4A4
- NAS1081-4A5N
- NAS1081-4A12
- NAS1081-4A14
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1081-4A4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error