The Washer,recessed, cataloged under National Stock Number 5310-01-421-4174, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-421-4174 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-A-225/9 7075 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.375 INCHES NOMINAL IN |
| Recess Diameter | 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Recess Angle | 95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| 17P1F6141-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-421-4174 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-421-4174: Style Designator: RECESSED; Material Document and Classification: QQ-A-225/9 7075 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.375 INCHES NOMINAL IN; Recess Diameter: 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN. 6 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.