The Screw,shoulder, cataloged under National Stock Number 5305-01-474-9859, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lyn-Tron, Inc. Dba Lyn-Tron Inc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-474-9859 |
| Primary Part Number | SS7423-013 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lyn-Tron, Inc. Dba Lyn-Tron Inc |
| Status | ACTIVE |
| Width Across Flats | 0.0940 INCHES NOMINAL IN |
| Head Height | 0.1250 INCHES MINIMUM AND 0.1874 INCHES MAXIMUM IN |
| Fastener Length | 0.5283 INCHES MINIMUM AND 0.5967 INCHES MAXIMUM IN |
| Shoulder Length | 0.372 INCHES MINIMUM AND 0.378 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35, TYPE II FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.1563 INCHES MINIMUM AND 0.2187 INCHES MAXIMUM IN |
| Shoulder Shape | SQUARE FIRST SHOULDER |
| Material Document and Classification | ASTM A582/582M ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 96906-MS51576 GOVERNMENT STANDARD |
| Shoulder Width Across Flats | 0.1860 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.2813 INCHES MINIMUM AND 0.3437 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 |
| Part Number | Manufacturer |
|---|---|
| SS7423-013 | Lyn-Tron, Inc. Dba Lyn-Tron Inc (USA) |
| Reference | Meaning |
|---|---|
| MS51576-10 | 2/2 Government specification standardization U.S. Government activity |
NSN 5305-01-474-9859 is a Screw,shoulder, manufactured by Lyn-Tron, Inc. Dba Lyn-Tron Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-474-9859 has 1 manufacturer part number on file: SS7423-013 (Lyn-Tron, Inc. Dba Lyn-Tron Inc).
Key specifications for SS7423-013: Width Across Flats: 0.0940 INCHES NOMINAL IN; Head Height: 0.1250 INCHES MINIMUM AND 0.1874 INCHES MAXIMUM IN; Fastener Length: 0.5283 INCHES MINIMUM AND 0.5967 INCHES MAXIMUM IN; Shoulder Length: 0.372 INCHES MINIMUM AND 0.378 INCHES MAXIMUM FIRST SHOULDER IN. 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.