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NAS6306-20D
Machine Bolt
Description
Fastener Length: 1-45/64", Thread: 3/8-24, Thread Length: 29/64", NAS6306 series bolt
Specifications
| End Application | C-17a aircraft |
|---|---|
| Fastener Length | 1.704 |
| Grip Diameter | Between 0.3740 inches and 0.3745 inches |
| Grip Length | 1.250 |
| Head Height | Between 0.188 inches and 0.203 inches |
| Head Style | Hexagon Head |
| Material | Iron |
| Material Specification | Ams 5731 assn standard 1st material response or ams 5737 assn standard all material responses |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Part Name Assigned By Controlling Agency | 160 ksi ftu nonlocking reduced major thread dia. short thread a286 cres close tolerance hex head tension bolt |
| Specification Data | 80205-nas6306 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 type 2 federal specification 1st treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Length | 0.454 |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 3/8 |
| Width Between Flats | Between 0.554 inches and 0.564 inches |
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 NAS6306-20D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error