screws › hexagon head cap screws
B1821AH025C063N
Screw
Description
Fastener Length: 5/8", Thread: 1/4-20, Thread Length: 37/64"
Specifications
| Fastener Length | 0.595 inches minimum and 0.625 inches maximum |
|---|---|
| Hardness Rating | 33.0 rockwell c minimum and 39.0 rockwell c maximum |
| Head Height | 0.150 inches minimum and 0.163 inches maximum |
| Head Style | Hexagon Head |
| Length | 5/8 |
| Material | Steel |
| Material Specification | Astm a354 gr bd gr 8 assn std single material response |
| Min. Tensile Strength (psi) | 150000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.470 inches minimum and 0.582 inches maximum |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNC |
| Thread Size | 1/4 |
| Width Between Flats | 0.428 inches minimum and 0.438 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- B1821AH025C063N
- B1821AH025C075N
- B1821AH025C088N
- B1821AH025C100N
- B1821AH025C113N
Cross-reference
No interchangeable or dimensionally similar parts are on record for B1821AH025C063N. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error