screws › machine screws
ST3M506-4-11-1
Screw
Description
Fastener Length: 1-3/32", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.070 inches minimum and 1.100 inches maximum |
| Head Diameter | 0.421 inches minimum and 0.426 inches maximum |
| Head Style | Oval countersunk |
| Internal Drive Style | High-torque |
| Length | 1 3/32 |
| Material | Steel |
| Material Specification | Ams5629 assn std single material response |
| Shoulder Diameter | 0.2802 inches minimum first shoulder and 0.2807 inches maximum first shoulder |
| Shoulder Length | 0.622 inches minimum first shoulder and 0.634 inches maximum first shoulder |
| Shoulder Shape | Round first shoulder |
| Special Features | Socket drive recess in thread end 0.0947 in. min and 0.0967 in. max width across flats |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.372 inches minimum and 0.422 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 ST3M506-4-11-1. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error