The Screw,assembled Washer, cataloged under National Stock Number 5305-01-458-7158, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-458-7158 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN |
| Fastener Length | 0.343 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Secondary Washer Relationship to Primary Washer | NOT IDENTICAL |
| Primary Washer Outside Diameter | 0.253 INCHES MAXIMUM IN |
| Thread Length | 0.282 INCHES MINIMUM IN |
| Material Document and Classification | QQ-B-613 COMP 11 FED SPEC SINGLE MATERIAL RESPONSE SECONDARY WASHER |
| Secondary Washer Style | FLAT |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Primary Washer Style | SPLIT HELICAL RING |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN |
| Specification/standard Data | 80205-NAS1301 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Secondary Washer Outside Diameter | 0.253 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN |
| Surface Treatment | TIN OVERALL |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Secondary Washer Material Thickness | 0.013 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 32 |
| Material | COPPER ALLOY PRIMARY WASHER |
| Material | COPPER ALLOY 260 FASTENER |
| Material | COPPER ALLOY SECONDARY WASHER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 2 |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.270 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 |
|---|---|
| NAS1301B6-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-458-7158 is a Screw,assembled Washer, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-458-7158: Head Height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN; Fastener Length: 0.343 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Secondary Washer Relationship to Primary Washer: NOT IDENTICAL; Primary Washer Outside Diameter: 0.253 INCHES MAXIMUM IN. 26 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.