screws › hexagon head cap screws
B1821BH025C125N
Hexagon Head Cap Screw
Description
Fastener Length: 1-1/4", Thread: 1/4-20, Thread Length: 15/16"
Specifications
| Fastener Length | 1.250 |
|---|---|
| Hardness Rating | 33 rockwell c and 39 rockwell c |
| Head Height | Between 0.150 inches and 0.163 inches |
| Head Style | Hexagon Head |
| Length | 1 1/4 |
| Material | Steel |
| Min. Tensile Strength (psi) | 150000 pounds per square inch |
| Minimum Yield Strength | 120000 pounds per square inch |
| Surface Treatment | Zinc and chromate |
| Thread Class | 2a |
| Thread Diameter | 0.25 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.75 inches and 0.938 inches |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 1/4 |
| Width Between Flats | Between 0.428 inches and 0.438 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- MS35307-312 MS 1/4-20 · 0.073 in · Hexagon Head · CRES
- MS90725-10 MS 1/4-20 · 0.073 in · Hexagon Head · Steel
- MS90725-8 MS 1/4-20 · 0.073 in · Hexagon Head · Steel
- MS90725-9 MS 1/4-20 · 0.073 in · Hexagon Head · Steel
- MS90728-8 MS 1/4-20 · 0.073 in · Hexagon Head · Steel
- B1821BH025C150N Other 1/4-20 · 0.073 in · Hexagon Head · Steel
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Catalog data updated 2026-07-05. Report a data error