The Screw,shoulder, cataloged under National Stock Number 5305-00-415-2148, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-415-2148 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.188 INCHES NOMINAL IN |
| Head Height | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Fastener Length | 2.735 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN |
| Shoulder Length | 2.245 INCHES MINIMUM AND 2.255 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.543 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| 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 |
|---|---|
| MS51975-24 | 3/2 Design control — primary reference U.S. Government activity |
| MS51975-24 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-00-415-2148 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-415-2148: Width Across Flats: 0.188 INCHES NOMINAL IN; Head Height: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Fastener Length: 2.735 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN; Shoulder Length: 2.245 INCHES MINIMUM AND 2.255 INCHES MAXIMUM FIRST SHOULDER IN. 15 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.