bolts › machine bolts
NAS6306-40D
Bolt
Description
Fastener Length: 2-31/32", Thread: 3/8-24, Thread Length: 15/32"
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 2.746 inches minimum first hole and 2.796 inches maximum first hole |
|---|---|
| Fastener Length | 2.939 inches minimum and 2.969 inches maximum |
| Grip Diameter | 0.3735 inches minimum and 0.3745 inches maximum |
| Grip Length | 2.490 inches minimum and 2.510 inches maximum |
| Head Height | 0.188 inches minimum and 0.203 inches maximum |
| Head Style | Dished hexagon |
| Length | 2 31/32 |
| Material | Iron |
| Material Specification | Ams 5731 assn std single material response or ams 5737 assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.106 inches minimum first hole and 0.116 inches maximum first hole |
| Specification Data | 80205-nas6306 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2 class 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Length | 0.429 inches minimum and 0.479 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNJF |
| Thread Size | 3/8 |
| Width Between Flats | 0.554 inches minimum and 0.564 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS6306-40D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error