screws › socket head cap screws
MS21093-0413
Military Standard Socket Head Cap Screw
Description
Fastener Length: 1/2", Thread: 4-40, Thread Length: 29/64", MS21093 series screw
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.469 inches minimum and 0.500 inches maximum |
| Head Diameter | 0.200 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/2 |
| Locking Feature | Pellet or strip |
| Material | Steel |
| Nondefinitive Specification/Std Data | 3 type and 3c style |
| Screw Material | Steel |
| Screw Material Specification | 66 fed std single material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Qq-p-416 ty 2 cl 3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.371 inches minimum and 0.460 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| Thread Size | 4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21093-0203
- MS21093-0204
- MS21093-0413
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21093-0413. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error