screws › close tolerance screws
HT181-5-16
Screw
Description
Fastener Length: 1-9/16", Thread: 5/16-24, Thread Length: 1/2"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.515 inches minimum and 1.562 inches maximum |
| Grip Diameter | 0.3110 inches minimum and 0.3120 inches maximum |
| Grip Length | 0.990 inches minimum and 1.010 inches maximum |
| Head Diameter | 0.578 inches minimum and 0.633 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | High-torque |
| Length | 1 9/16 |
| Material | Steel |
| Material Specification | Nas498 assn std single material response |
| Min. Tensile Strength (psi) | 10250 pounds per square inch |
| Point Style | Flat |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Nas672 assn std single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.3125 |
| Thread Direction | Right-hand |
| Thread Length | 0.531 |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNJF |
| Thread Size | 5/16 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for HT181-5-16. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error