The Screw,shoulder, cataloged under National Stock Number 5305-01-343-1763, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-343-1763 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.100 INCHES NOMINAL IN |
| Head Height | 0.438 INCHES NOMINAL IN |
| Fastener Length | 10.960 INCHES NOMINAL IN |
| Shoulder Length | 9.896 INCHES MINIMUM AND 9.906 INCHES MAXIMUM FIRST SHOULDER IN |
| Extended Washer Diameter | 2.600 INCHES NOMINAL IN |
| Shoulder Diameter | 1.810 INCHES MINIMUM AND 1.811 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.054 INCHES MINIMUM AND 1.064 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.279 INCHES MINIMUM AND 0.291 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | DMS 1935 CAGEC 88277 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.500 INCHES IN |
| Head Style | FLAT EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CHROMIUM OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 10.626 INCHES MINIMUM AND 10.636 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 2.400 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 17P1C2045-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-343-1763 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-343-1763: Extended Washer Thickness: 0.100 INCHES NOMINAL IN; Head Height: 0.438 INCHES NOMINAL IN; Fastener Length: 10.960 INCHES NOMINAL IN; Shoulder Length: 9.896 INCHES MINIMUM AND 9.906 INCHES MAXIMUM FIRST SHOULDER IN. 21 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.