The Screw,assembled Washer, cataloged under National Stock Number 5305-00-421-9167, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-421-9167 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN |
| Head Height | 0.097 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN |
| Fastener Length | 0.602 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 20 FSCM 23610 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.290 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Primary Washer Outside Diameter | 0.290 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Thread Length | 0.560 INCHES MAXIMUM IN |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.125 INCHES IN |
| Head Style | ROUND EXTENDED WASHER |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL OVERALL |
| Internal Drive Style | SLOT |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| Head Diameter | 0.197 INCHES MINIMUM AND 0.215 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 |
|---|---|
| 1053107 | 3/9 Design control — primary reference H & E Venture, Llc |
NSN 5305-00-421-9167 is a Screw,assembled Washer, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-421-9167: Extended Washer Thickness: 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN; Head Height: 0.097 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN; Fastener Length: 0.602 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 20 FSCM 23610 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 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.