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NAS6304-21D
Shear Bolt
Description
Fastener Length: 1-11/16", Thread: 1/4-28, Thread Length:
Specifications
| Color | Green threads |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.512 inches first hole |
| Fastener Length | Between 1.667 inches and 1.697 inches |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 1.302 inches and 1.322 inches |
| Head Height | Between 0.125 inches and 0.140 inches |
| Head Style | Dished hexagon |
| Material | Iron |
| Material Specification | Ams 5731 assn standard single material response or ams 5737 assn standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole and 0.086 inches first hole |
| Specification Data | 80205-nas6304 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.370 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
| Width Between Flats | Between 0.429 inches and 0.439 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS6304-21D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error