The Bolt,assembled Washer, cataloged under National Stock Number 5306-00-042-5840, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-042-5840 |
| Item Name | Bolt,assembled Washer |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Fastener Length | 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 3,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Primary Washer Outside Diameter | 0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN |
| Thread Length | 0.523 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.025 INCHES NOMINAL IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1010 OR STEEL COMP 1020 OVERALL |
| Thread Series Designator | UNF |
| Washer Quantity | 1 |
| 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 |
|---|---|
| 425840 | 4/1 Identification reference Army Weapons Command Attn Amswe-Ree-S |
NSN 5306-00-042-5840 is a Bolt,assembled Washer, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-042-5840: Head Height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Fastener Length: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 3,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Primary Washer Outside Diameter: 0.466 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN. 17 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.