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MS24693B2
Military Standard Machine Screw
Description
Fastener Length: 1/4", Thread: 4-40, Thread Length: 3/16
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.219 inches minimum and 0.250 inches maximum |
| Head Diameter | 0.191 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/4 |
| Min. Tensile Strength (psi) | 55000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type and 3c style |
| Screw Material | Copper alloy |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.120 inches minimum and 0.201 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.
- NAS1189-04P4 NAS #4-40 · 1/4 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error