screws › machine screws
3M925C4-11A
Screw
Description
Fastener Length: 1-5/32", Thread: 1/4-28, Thread Length: 31/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.141 inches minimum and 1.171 inches maximum |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.678 inches minimum and 0.698 inches maximum |
| Head Diameter | 0.502 inches minimum and 0.507 inches maximum |
| Head Height | 0.071 inches minimum and 0.073 inches maximum |
| Head Style | Flat countersunk undercut |
| Internal Drive Style | High-torque |
| Length | 1 5/32 |
| Material | Steel |
| Special Features | Furnished with one o-ring |
| Surface Finish | 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Aluminum and chromate |
| Surface Treatment Specification | Mil-c-83488 type 2 class 3 mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.443 inches minimum and 0.493 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- ST3M430V4-11AS Other 1/4-28 · 0.073 in · Flat countersunk undercut · Titanium
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Catalog data updated 2026-07-05. Report a data error