screws › machine screws
ST3M505-4-5
Screw
Description
Fastener Length: 23/32", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.694 inches minimum and 0.724 inches maximum |
| Head Diameter | 0.456 inches minimum and 0.508 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | High-torque |
| Length | 23/32 |
| Material | Steel |
| Material Specification | Ams5629 assn std single material response |
| Shoulder Diameter | 0.2177 inches minimum first shoulder and 0.2182 inches maximum first shoulder |
| Shoulder Length | 0.207 inches minimum first shoulder and 0.227 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 |
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 ST3M505-4-5. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error