bolts › close tolerance bolts
NAS1224C3P
Bolt
Description
Fastener Length: 5/8", Thread: 1/4-28, Thread Length: 7/16"
Specifications
| Fastener Length | 0.598 inches minimum and 0.628 inches maximum |
|---|---|
| Grip Diameter | 0.2490 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.178 inches minimum and 0.198 inches maximum |
| Head Height | 0.125 inches minimum and 0.140 inches maximum |
| Head Style | Undercut hexagon |
| Length | 5/8 |
| Material | Iron |
| Material Specification | Ams 5732 assn std single material response |
| Min. Tensile Strength (psi) | 140000 pounds per square inch |
| Part Name Assigned By Controlling Agency | Navy special project |
| Specification Data | 80205-nas1224 professional/industrial association standard |
| Surface Finish | 32.0 microinches threads, 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.400 inches minimum and 0.450 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.430 inches minimum and 0.439 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- NAS1224C3L NAS 1/4-28 · 5/8 in · Undercut hexagon · Iron
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Catalog data updated 2026-07-05. Report a data error