screws › socket head cap screws
MS21090-0417
Military Standard Socket Head Cap Screw
Description
Fastener Length: 7/8", Thread: 4-40, Thread Length: 7/8
Specifications
| End Application | Sh-60b lamps mark iii prowler ea-6b; helicopter intruder a-6e; aircraft f-16; aircraft hh-60j; aircraft uscg search and rescue hh-60h; helicopter search and rescue sh-60f; helicopter carrier based asw seahawk h-60; helicopter w/s: helicopter |
|---|---|
| Fastener Length | Between 0.844 inches and 0.875 inches |
| Head Diameter | Between 0.205 inches and 0.219 inches |
| Head Height | Between 0.070 inches and 0.080 inches |
| 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 | Qq-s-637 federal specification single material response or 66 federal standard single material response |
| 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 | Class 3 federal specification all treatment responses type 2 qq-p-416 |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.794 inches and 0.875 inches |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 4 |
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 MS21090-0417. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error