screws › machine screws
204-13555-1
Screw
Description
Fastener Length: 3-5/16", Thread: 1/2-20, Thread Length: 51/64
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Fastener Length | 3.340 |
| Grip Diameter | 0.4985 inches minimum and 0.4995 inches maximum |
| Grip Length | 2.438 |
| Head Diameter | 0.717 |
| Head Style | Flat countersunk |
| Internal Drive Style | High-torque |
| Length | 3 5/16 |
| Material | Steel |
| Material Specification | Ph13-8mo bms7-189 fscm 81205 mfr ref single material response |
| Surface Finish | 32.0 microinches threads, 63.0 microinches grip |
| Thread Class | 3a |
| Thread Diameter | 0.500 |
| Thread Direction | Right-hand |
| Thread Length | 0.802 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNJF |
| Thread Size | 1/2 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for 204-13555-1. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error