screws › machine screws
ST3M506-5-3
Screw
Description
Fastener Length: 43/64", Thread: 1/4-24, Thread Length: 1/2"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.639 inches minimum and 0.686 inches maximum |
| Head Diameter | 0.461 inches minimum and 0.507 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | High-torque |
| Length | 43/64 |
| Material | Steel |
| Material Specification | Ams5629 assn std single material response |
| Shoulder Diameter | 0.342 inches minimum first shoulder and 0.343 inches maximum first shoulder |
| Shoulder Length | 0.178 inches minimum first shoulder and 0.198 inches maximum first shoulder |
| Shoulder Shape | Round first shoulder |
| Special Features | Internal hexagon socket 0.127 in. min and 0.130 in. max width across flats,0.160 in. deep in thread end |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.441 inches minimum and 0.508 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| 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
No interchangeable or dimensionally similar parts are on record for ST3M506-5-3. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error