bolts › close tolerance bolts
NAS1954C6
Bolt
Description
Fastener Length: 51/64", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Fastener Length | 0.800 |
|---|---|
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.365 inches minimum and 0.385 inches maximum |
| Head Height | 0.125 inches minimum and 0.140 inches maximum |
| Head Style | Hexagon Head |
| Length | 51/64 |
| Material | Steel |
| Material Specification | Ams 5731 assn std single material response |
| Special Features | Heat treatment is 180 ksi min. ult. tensile; 108 ksi min. ult. shear at room temperature |
| Specification Data | 80205-nas1954 professional/industrial association standard |
| Surface Finish | 125.0 microinches grip, 125.0 microinches threads, 32.0 microinches bearing surface of head, 32.0 microinches sides of head |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed 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 Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.510 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error