The Screw,shoulder, cataloged under National Stock Number 5305-01-383-6844, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-383-6844 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Spline Minor Diameter | 0.250 INCHES NOMINAL IN |
| Head Height | 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Fastener Length | 2.110 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN |
| Shoulder Length | 1.500 INCHES NOMINAL FIRST SHOULDER IN |
| Spline Width | 0.048 INCHES NOMINAL IN |
| Shoulder Diameter | 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.281 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SIX SPLINE |
| Thread Quantity Per Inch | 26 |
| Material | STEEL COMP 1212 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.729 INCHES MINIMUM AND 0.750 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 |
|---|---|
| MS21301-29 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-01-383-6844 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-383-6844: Spline Minor Diameter: 0.250 INCHES NOMINAL IN; Head Height: 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Fastener Length: 2.110 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN; Shoulder Length: 1.500 INCHES NOMINAL FIRST SHOULDER IN. 18 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.