The Screw,shoulder, cataloged under National Stock Number 5305-01-499-9023, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-499-9023 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 8.11 MILLIMETERS MAXIMUM MM |
| Head Height | 5.5 MILLIMETERS MAXIMUM MM |
| Fastener Length | 10.0 MILLIMETERS NOMINAL MM |
| Shoulder Length | 11.87 MILLIMETERS MAXIMUM AND 12.00 MILLIMETERS MAXIMUM FIRST SHOULDER MM |
| Surface Treatment Document and Classification | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 9.95 MILLIMETERS MINIMUM AND 9.98 MILLIMETERS MAXIMUM FIRST SHOULDER MM |
| Thread Pitch in Millimeters | 1.0 |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | HEXAGON |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| Head Diameter | 13.0 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| B1833B080010N | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-499-9023 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-499-9023: Width Across Flats: 8.11 MILLIMETERS MAXIMUM MM; Head Height: 5.5 MILLIMETERS MAXIMUM MM; Fastener Length: 10.0 MILLIMETERS NOMINAL MM; Shoulder Length: 11.87 MILLIMETERS MAXIMUM AND 12.00 MILLIMETERS MAXIMUM FIRST SHOULDER MM. 16 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.