screws › hexagon head cap screws
B1821BH038C175N
Hexagon Head Cap Screw
Description
Fastener Length: 1-3/4", Thread: 3/8-16, Thread Length: 1-3/16", B1821 series screw
Specifications
| Fastener Length | Between 1.688 inches and 1.750 inches |
|---|---|
| Head Height | Between 0.226 inches and 0.243 inches |
| Head Style | Hexagon Head |
| Iii End Application | Mrap-rg-33 and rg-33 auv; mrap - cougar; mrap buffalo mk2a2; mrap - m-atv with cs13 sne |
| Length | 1 3/4 |
| Material | Steel |
| Material Specification | Sae j429 grade 8 assn standard single material response or astm a354 grade bd assn standard single material response |
| Min. Tensile Strength (psi) | 150000 pounds per square inch |
| Surface Finish | 63.0 microinches threads |
| Surface Treatment | Zinc and chromate |
| Surface Treatment Specification | Astm b633 type 2 sc 3 assn standard single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.000 inches and 1.188 inches |
| Thread Qty | 16 |
| Thread Qty Per Inch (tpi) | 16 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 3/8 |
| Width Between Flats | Between 0.551 inches and 0.562 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.
- MS35307-363 MS 3/8-16 · 0.073 in · Hexagon Head · CRES
- MS35307-365 MS 3/8-16 · 0.073 in · Hexagon Head · CRES
- B1821BH038C125L Other 3/8-16 · 0.073 in · Hexagon Head · Plastic
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Catalog data updated 2026-07-05. Report a data error