nuts › plain hexagon nuts
NAS577B20A
Locknut
Description
Thread Size: 1-1/4", Nut Height: 1-13/16", Nut Length: 2-11/32"
Specifications
| Features Provided | Floating nut |
|---|---|
| Hardness Rating | 39.0 rockwell c minimum and 46.0 rockwell c maximum |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| Material Specification | Mil-s-6049 mil spec 1st material response or ms 6322 fed spec single material response or mil-s-8844,cl 1 mil spec 2nd material response |
| Nut Diameter | 2.119 inches minimum and 2.122 inches maximum |
| Nut Height | 1.813 inches maximum |
| Nut Length | 2.342 inches minimum and 2.362 inches maximum |
| Nut Style | Floating self-locking barrel |
| Specification Data | 80205-nas577 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 2 fed spec single treatment response |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 12 |
| Thread Qty Per Inch (tpi) | 12 |
| Thread Series | UNJF |
| Thread Size | 1.250 |
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 NAS577B20A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error