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NAS1155-21
Screw
Description
Fastener Length: 1-11/16", Thread: 1/4-24, Thread Length: 25/64"
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Fastener Length | 1.672 inches minimum and 1.702 inches maximum |
| Grip Diameter | 0.3110 inches minimum and 0.3120 inches maximum |
| Grip Length | 1.302 inches minimum and 1.322 inches maximum |
| Head Diameter | 0.577 inches minimum and 0.635 inches maximum |
| Head Style | Flat countersunk |
| Length | 1 11/16 |
| Material | Steel |
| Material Specification | Mil-s-5626,cond 4340 mil spec single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1155 professional/industrial association standard |
| Surface Finish | 32.0 microinches |
| 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 | 0.350 inches minimum and 0.400 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
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 NAS1155-21. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error