The Washer,recessed, cataloged under National Stock Number 5310-01-459-6937, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-459-6937 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Surface Treatment Document and Classification | QQ-P-35,TYPE IV FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | ASTM A582 CRES 303,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.200 INCHES NOMINAL IN |
| Material Thickness | 0.055 INCHES NOMINAL IN |
| Recess Diameter | 0.179 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 303 OVERALL |
| Hole Diameter | 0.088 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN |
| Recess Angle | 80.0 DEGREES MINIMUM AND 84.0 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 |
|---|---|
| 2277-13617-02 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-459-6937 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-459-6937: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Surface Treatment Document and Classification: QQ-P-35,TYPE IV FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED; Material Document and Classification: ASTM A582 CRES 303,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 11 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.