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NAS1004-4A
Machine Bolt
Description
Fastener Length: 25/32", Thread: 1/4-28, Thread Length: 17/32", NAS1004 series bolt
Specifications
| Fastener Length | 0.794 |
|---|---|
| Features Provided | Finished head |
| Grip Length | 0.250 |
| Head Height | 0.156 |
| Head Style | Hexagon Head |
| Material | Iron |
| Material Specification | Ams5731 assn standard single material response or ams5732 assn standard single material response |
| Min. Tensile Strength (psi) | 140000 pounds per square inch |
| Special Features | Tensile strength at room temperature |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Mil-s-5002 military specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.544 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
| Width Between Flats | Between 0.430 inches and 0.439 inches |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1004-4 NAS 1/4-28 · 25/32 in · Hexagon Head · Iron
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Catalog data updated 2026-07-05. Report a data error