The Washer,recessed, cataloged under National Stock Number 5310-01-523-4191, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-523-4191 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35, TY 2 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416. TY2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SHOULDERED AND RECESSED |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.725 INCHES MINIMUM AND 0.745 INCHES MAXIMUM IN |
| Material Thickness | 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Specification/standard Data | 81205-BACW10BN MANUFACTURERS STANDARD |
| Shoulder Diameter | 0.489 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OR CADMIUM OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.376 INCHES MINIMUM AND 0.387 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 |
|---|---|
| BACW10BN6SC | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-523-4191 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-523-4191: Surface Treatment Document and Classification: QQ-P-35, TY 2 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416. TY2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SHOULDERED AND RECESSED; Material Document and Classification: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.725 INCHES MINIMUM AND 0.745 INCHES MAXIMUM IN. 10 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.