The Washer,recessed, cataloged under National Stock Number 5310-01-271-6900, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-271-6900 |
| Primary Part Number | 5893851 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Top Recess Diameter | 0.273 INCHES MINIMUM AND 0.293 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625,TY 3,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Bottom Recess Diameter | 0.273 INCHES MINIMUM AND 0.293 INCHES MAXIMUM IN |
| Style Designator | RECESSED BOTH SIDES |
| Material Document and Classification | QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.593 INCHES MINIMUM AND 0.597 INCHES MAXIMUM IN |
| Material Thickness | 0.066 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE AND DICHROMATE OVERALL |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Hole Diameter | 0.251 INCHES MINIMUM AND 0.255 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 |
| Part Number | Manufacturer |
|---|---|
| 5893851 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-271-6900 is a Washer,recessed, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-271-6900 has 1 manufacturer part number on file: 5893851 (Naval Sea Systems Command).
Key specifications for 5893851: Top Recess Diameter: 0.273 INCHES MINIMUM AND 0.293 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-A-8625,TY 3,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Bottom Recess Diameter: 0.273 INCHES MINIMUM AND 0.293 INCHES MAXIMUM IN; Style Designator: RECESSED BOTH SIDES. 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.