screws › socket head cap screws
MS21090-0841
Military Standard Screwlock
Description
Fastener Length: 7/8", Thread: 8-32, Thread Length: 53/64"
Specifications
| Fastener Length | 0.843 inches minimum and 0.875 inches maximum |
|---|---|
| Head Diameter | 0.306 inches minimum and 0.322 inches maximum |
| Head Height | 0.105 inches minimum and 0.115 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 7/8 |
| Locking Feature | Patch threads or pellet threads or strip threads |
| Material | Steel |
| Material Specification | Astm a576 assn std single material response or astm a108 assn std single material response or qq-s-637 fed spec single material response |
| Min. Tensile Strength (psi) | 60000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty2,class 3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.164 |
| Thread Direction | Right-hand |
| Thread Length | 0.781 inches minimum and 0.843 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNC |
| Thread Size | 8 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21090-0415
- MS21090-0416
- MS21090-0417
- MS21090-0632
- MS21090-689
- MS21090-0840
- MS21090-0841
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21090-0841. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error