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NAS1297-5-20
Shoulder Bolt
Description
Fastener Length: 1-25/32", Thread: 1/4-3A, NAS1297 series bolt
Specifications
| Fastener Length | 1.748 inches minimum and 1.788 inches maximum |
|---|---|
| Head Height | 0.203 inches minimum and 0.235 inches maximum |
| Head Style | Hexagon Head |
| Length | 1 25/32 |
| Material | Steel |
| Material Specification | Mil-s-5626 mil spec single material response or mil-s-6049 mil spec single material response or mil-s-6050 mil spec single material response or mil-s-6098 mil spec single material response or mil-s-6758 mil spec single material response or ams 6300 assn std single material response |
| Min. Tensile Strength (psi) | 6500 pounds per square inch |
| Shoulder Diameter | 0.371 inches minimum first shoulder and 0.374 inches maximum first shoulder |
| Shoulder Length | 1.260 inches minimum first shoulder and 1.290 inches maximum first shoulder |
| Shoulder Shape | Round first shoulder |
| Specification Data | 80205-nas1297 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.498 |
| Thread Qty | 3 |
| Thread Qty Per Inch (tpi) | 3a |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.553 inches minimum and 0.565 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1297-5-8
- NAS1297-5-12
- NAS1297-5-13
- NAS1297-5-15
- NAS1297-5-20
- NAS1297-5-43
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1297-5-20. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error