screws › socket head cap screws
3176207-C-090
Socket Head Cap Screws
Description
Fastener Length: 1-", Thread: 1/4-20, Head Width: 3/16", Thread Length: 0-63/64
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | 1.000 |
| Hardness Rating | 38.0 rockwell c and 45.0 rockwell c |
| Head Diameter | Between 0.365 inches and 0.375 inches |
| Head Height | Between 0.244 inches and 0.250 inches |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Locking Feature | Strip fastener |
| Material | Steel |
| Min. Tensile Strength (psi) | 170000 pounds per square inch |
| Minimum Yield Strength | 150000 pounds per square inch |
| Surface Finish | 63.0 microinches bearing surface of head |
| Surface Treatment | Zinc and chromate |
| Surface Treatment Specification | Type 2 assn standard single treatment response astm b633 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.900 inches and 1.000 inches |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 1/4 |
| Width Across Flats | 0.188 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error