screws › hexagon head cap screws
B1821AH025F063N
Screw
Description
Fastener Length: 5/8", Thread: 1/4-28, Thread Length: 5/8"
Specifications
| Fastener Length | 0.630 |
|---|---|
| Features Provided | Finished head |
| Head Height | 0.150 inches minimum and 0.163 inches maximum |
| Head Style | Hexagon Head |
| Length | 5/8 |
| Material | Steel |
| Material Specification | Sae j429 gr8 assn std single material response |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416, ty2 cl2 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.559 inches minimum and 0.630 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| 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.
- B1821AH025F063N
- B1821AH025F075N
- B1821AH025F088N
- B1821AH025F100N
- B1821AH025F113N
- B1821AH025F125N
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.
- MS35308-305 MS 1/4-28 · 5/8 in · Hexagon Head · CRES
- MS90726-5 MS 1/4-28 · 5/8 in · Hexagon Head · Steel
- B1821BH025F063N Other 1/4-28 · 5/8 in · Hexagon Head · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error