screws › close tolerance screws
HT4056-4-8A
Screw
Description
Fastener Length: 15/16", Thread: 1/4-28, Thread Length: 7/16"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.911 inches minimum and 0.941 inches maximum |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.490 inches minimum and 0.510 inches maximum |
| Head Diameter | 0.456 inches minimum and 0.508 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | High-torque |
| Length | 15/16 |
| Material | Titanium |
| Material Specification | Nas621 assn std single material response |
| Surface Finish | 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Aluminum |
| Surface Treatment Specification | Ps13143,ty 2,cl 3 fscm 76301 mfr ref single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.401 inches minimum and 0.451 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for HT4056-4-8A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error