screws › close tolerance screws
HT309-7D19
Screw
Description
Fastener Length: 1-43/64", Thread: 7/16-20, Thread Length: 7/16"
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.510 inches minimum first hole and 1.567 inches maximum first hole |
| Fastener Length | 1.638 inches minimum and 1.685 inches maximum |
| Grip Diameter | 0.4360 inches minimum and 0.4370 inches maximum |
| Grip Length | 1.178 inches minimum and 1.198 inches maximum |
| Head Diameter | 0.880 inches minimum and 0.890 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | High-torque |
| Length | 1 43/64 |
| Material | Steel |
| Shank Unthreaded Hole Diameter | 0.106 inches minimum first hole and 0.111 inches maximum first hole |
| Specification Data | 76301-st3-562 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Mac ps13145,fscm 76301 mfr ref single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.438 |
| Thread Direction | Right-hand |
| Thread Length | 0.466 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNJF |
| Thread Size | 7/16 |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- HT8177-7D19 Other 7/16-20 · 0.073 in · Flat countersunk · Steel
- ST3M562-7D19 Other 7/16-20 · 0.073 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error