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LL57J40P3
Screw
Description
Fastener Length: 11/64", Thread: 4-40, Thread Length: 1/16"
Specifications
| Countersink Angle | 80.0 degrees minimum and 82.0 degrees maximum |
|---|---|
| Fastener Length | 0.157 inches minimum and 0.188 inches maximum |
| Head Diameter | 0.195 inches minimum and 0.225 inches maximum |
| Head Height | 0.038 inches minimum and 0.047 inches maximum |
| Head Style | Flat countersunk undercut |
| Internal Drive Style | Cross recess type 1 |
| Length | 3/16 |
| Locking Feature | Strip threads |
| Material | Steel |
| Material Specification | Qq-s-763 fed spec 1st material response or qq-s-764 fed spec 2nd material response |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Surface Treatment | Passivate |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.060 inches minimum and 0.150 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| Thread Size | 4 |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- MS51959-12B MS #4-40 · 3/16 in · Flat countersunk undercut · CRES
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Catalog data updated 2026-07-05. Report a data error