screws › hexagon head cap screws
B1821BH038C138N
Hexagon Head Cap Screw
Description
Fastener Length: 1-3/8", Thread: 3/8-16, Thread Length: 1-3/16
Specifications
| Fastener Length | Between 1.313 inches and 1.375 inches |
|---|---|
| Hardness Rating | 32.0 rockwell c and 38.0 rockwell c |
| Head Height | Between 0.226 inches and 0.243 inches |
| Head Style | Hexagon Head |
| 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
No interchangeable or dimensionally similar parts are on record for B1821BH038C138N. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error