The Setscrew, cataloged under National Stock Number 5305-01-346-2257, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-346-2257 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 1.297 INCHES NOMINAL IN |
| Hole Thread Quantity Per Inch | 24 |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Hole Configuration Style | ROUND |
| Material Document and Classification | MIL-B-17668 MIL SPEC SINGLE MATERIAL RESPONSE HEAD |
| Material Document and Classification | MIL-C-895 MIL SPEC SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Hole Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Quantity Per Inch | 16 |
| Material | COPPER ALLOY PRIMARY WASHER |
| Material | COPPER ALLOY FASTENER |
| Material | COPPER ALLOY 854 OR COPPER ALLOY 852 HEAD |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Hole Type | THREADED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 9000-S6202-74031 PIECE 30 | 3/2 Design control — primary reference U.S. Government activity |
| 11255-101 | 5/9 Secondary reference U.s. Pioneer, L.l.c. |
NSN 5305-01-346-2257 is a Setscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-346-2257: Fastener Length: 1.297 INCHES NOMINAL IN; Hole Thread Quantity Per Inch: 24; Thread Length: 0.250 INCHES NOMINAL IN; Hole Configuration Style: ROUND. 20 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.