The Screw,shoulder, cataloged under National Stock Number 5305-01-088-4959, 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15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-088-4959 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.156 INCHES NOMINAL IN |
| Fastener Length | 1.689 INCHES MINIMUM AND 1.691 INCHES MAXIMUM IN |
| Shoulder Length | 1.500 INCHES MINIMUM AND 1.502 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.1860 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.188 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.312 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 | X |
| Reference | Meaning |
|---|---|
| PL-16-3 | 3/9 Design control — primary reference W. M. Berg, Inc. |
NSN 5305-01-088-4959 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-088-4959: Head Height: 0.156 INCHES NOMINAL IN; Fastener Length: 1.689 INCHES MINIMUM AND 1.691 INCHES MAXIMUM IN; Shoulder Length: 1.500 INCHES MINIMUM AND 1.502 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.1860 INCHES MINIMUM AND 0.1870 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.