screws › machine screws
LL51957-13
Screw
Description
Fastener Length: 7/32", Thread: 4-40, Thread Length: 11/64
Specifications
| Fastener Length | Between 0.219 inches and 0.250 inches |
|---|---|
| Head Diameter | Between 0.205 inches and 0.219 inches |
| Head Height | Between 0.070 inches and 0.080 inches |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Locking Feature | Strip threads |
| Material | CRES |
| Material Specification | 300 series federal standard 1st material response or comp 16-18 or 18-8 assn standard 2nd material response 300 series federal specification 1st material response or 66 qq-s-763 |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.169 inches and 0.250 inches |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 4 |
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.
- AN515UB4-4 AN #4-40 · 1/4 in · Pan Head
- MS51957-13B MS #4-40 · 1/4 in · Pan Head · CRES
- NAS1100-04-4 NAS #4-40 · 1/4 in · Pan Head · Steel
- NAS1100E04-4 NAS #4-40 · 1/4 in · Pan Head · Iron
- NAS1190-04P14 NAS #4-40 · 1/4 in · Pan Head · Steel
- NAS1190-04P4 NAS #4-40 · 1/4 in · Pan Head · Steel
- NAS1190-04P4B NAS #4-40 · 1/4 in · Pan Head · Steel
- NAS600-4B NAS #4-40 · 1/4 in · Pan Head · Steel
- NAS600-4P NAS #4-40 · 1/4 in · Pan Head · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error