screws › socket head cap screws
MS21090-689
Military Standard Self Locking Screw
Description
Fastener Length: 1/2", Thread: 3/8-24, Thread Length: 1/2"
Specifications
| Fastener Length | 0.469 inches minimum and 0.500 inches maximum |
|---|---|
| Head Diameter | 0.716 inches minimum and 0.740 inches maximum |
| Head Height | 0.244 inches minimum and 0.261 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/2 |
| Locking Feature | Strip threads |
| Material | Steel |
| Min. Tensile Strength (psi) | 60000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type and 9c style |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Length | 0.469 inches minimum and 0.500 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNF |
| Thread Size | 3/8 |
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 MS21090-689. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error