screws › hexagon head cap screws
B1821BH050C350N
Screw
Description
Fastener Length: 3-1/2", Thread: 1/2-13, Thread Length: 1-7/16"
Specifications
| Fastener Length | 3.500 |
|---|---|
| Head Height | 0.302 inches minimum and 0.323 inches maximum |
| Head Style | Hexagon Head |
| Length | 3 1/2 |
| Material | Steel |
| Material Specification | Saej429 grade 8 assn std single material response or astma354 grade bd assn std single material response |
| Min. Tensile Strength (psi) | 150000 pounds per square inch |
| Minimum Yield Strength | 120000 pounds per square inch |
| Surface Treatment | Zinc and chromate |
| Surface Treatment Specification | Astm b633 ty 2 sc 3 assn std single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.500 |
| Thread Direction | Right-hand |
| Thread Length | 1.250 inches minimum and 1.440 inches maximum |
| Thread Qty | 13 |
| Thread Qty Per Inch (tpi) | 13 |
| Thread Series Designator | UNC |
| Thread Size | 1/2 |
| Width Between Flats | 0.736 inches minimum and 0.750 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- B1821BH050C075N
- B1821BH050C175N
- B1821BH050C225N
- B1821BH050C350N
- B1821BH050C400N
- B1821BH050C550N
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.
- MS90728-120 MS 1/2-13 · 0.099 in · Hexagon Head · Steel
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Catalog data updated 2026-07-05. Report a data error