The Screw,assembled Washer, cataloged under National Stock Number 5305-00-449-2791, 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18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-449-2791 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.118 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Fastener Length | 2.281 INCHES MINIMUM AND 2.375 INCHES MAXIMUM IN |
| Primary Washer Outside Diameter | 0.283 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN |
| Thread Length | 1.750 INCHES MINIMUM IN |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES FASTENER |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FILLISTER |
| Primary Washer Style | SPLIT HELICAL RING |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.040 INCHES NOMINAL IN |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1137 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| Head Diameter | 0.292 INCHES MINIMUM AND 0.313 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 |
|---|---|
| 456639 | C/1 Advisory reference — outside the item-of-supply concept Eastman Kodak Co |
| 456639 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 456639 | 3/9 Design control — primary reference General Motors Corp |
NSN 5305-00-449-2791 is a Screw,assembled Washer, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-449-2791: Head Height: 0.118 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Fastener Length: 2.281 INCHES MINIMUM AND 2.375 INCHES MAXIMUM IN; Primary Washer Outside Diameter: 0.283 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN; Thread Length: 1.750 INCHES MINIMUM 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.