screws › close tolerance screws
51B221-5
Screw
Description
Fastener Length: 37/64", Thread: 10-32, Thread Length: 9/32"
Specifications
| Fastener Length | 0.573 inches minimum and 0.620 inches maximum |
|---|---|
| Grip Diameter | 0.1885 inches minimum and 0.1895 inches maximum |
| Grip Length | 0.297 inches minimum and 0.327 inches maximum |
| Head Diameter | 0.361 inches minimum and 0.381 inches maximum |
| Head Height | 0.103 inches minimum and 0.118 inches maximum |
| Head Style | Modified pan |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 39/64 |
| Material | Steel |
| Material Specification | Mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| Surface Finish | 32.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2,class 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.276 inches minimum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNF |
| Thread Size | 10 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- 51B221-5
- 51B221-8
Cross-reference
No interchangeable or dimensionally similar parts are on record for 51B221-5. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error