screws › machine screws
A217A28
Screw
Description
Fastener Length: 7/8", Thread: 4-40, Thread Length: 53/64"
Specifications
| Fastener Length | 0.875 |
|---|---|
| Head Diameter | 0.205 inches minimum and 0.219 inches maximum |
| Head Height | 0.070 inches minimum and 0.080 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 7/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 55000 pounds per square inch |
| Screw Material | Steel comp 1010 or steel comp 1011 or steel comp 1013 |
| Screw Material Specification | 66 fed std all material responses |
| Screw Surface Treatment | Cadmium and chromate |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.825 inches minimum and 0.875 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| Thread Size | 4 |
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.
- AN515-4R14 AN #4-40 · 7/8 in · Pan Head · Steel
- MS51957-20B MS #4-40 · 7/8 in · Pan Head · CRES
- NAS1100E04-14 NAS #4-40 · 7/8 in · Pan Head · Iron
- NAS600-14B NAS #4-40 · 7/8 in · Pan Head · Steel
- NAS600-14P NAS #4-40 · 7/8 in · Pan Head · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error