screws › machine screws
HT4067-4-7D
Screw
Description
Fastener Length: 29/32", Thread: 1/4-28, Thread Length: 31/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.891 inches minimum and 0.921 inches maximum |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.428 inches minimum and 0.448 inches maximum |
| Head Diameter | 0.5018 inches minimum and 0.5066 inches maximum |
| Head Height | 0.0713 inches minimum and 0.0733 inches maximum |
| Head Style | Flat countersunk undercut |
| Internal Drive Style | High-torque |
| Length | 29/32 |
| Material | Steel |
| Material Specification | Ams 5629 assn std single material response |
| Surface Finish | 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Aluminum and chromate |
| Surface Treatment Specification | Mil-c-83488 ty 2 cl 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 |
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.
- 3M925C4-7D Commercial 1/4-28 · 29/32 in · Flat countersunk undercut · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error