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NAS6604D21
Close Tolerance Bolt - Drilled Shank
Description
Close Tolerance Bolt - Drilled Shank
Specifications
| Alternate Part Number | NAS1304-21D |
|---|---|
| Country of Origin | USA |
| Distance From Head Largest Bearing Surface To Shank Hole Center | 0.284 inches minimum first hole and 0.334 inches maximum first hole |
| Fastener Length | 0.970 inches minimum and 1.030 inches maximum |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 1.302 inches minimum and 1.322 inches maximum |
| Head Height | 0.125 inches minimum and 0.140 inches maximum |
| Head Style | Hexagon Head |
| Length | 0 63/64 |
| Material | Steel |
| Material Specification | Mil-s-5000,4340 mil spec single material response or mil-s-6049,8740 mil spec single material response or ams6322 assn std single material response |
| NIIN | 01-448-8309 |
| NSN | 5306-01-448-8309 |
| Shank Unthreaded Hole Diameter | 0.076 inches minimum first hole and 0.086 inches maximum first hole |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty2,cl2 mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.425 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Size | 1/4 |
| Weight | 0.003 lb |
| Width Between Flats | 0.429 inches minimum and 0.439 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS6604D21. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error