The Washer,recessed, cataloged under National Stock Number 5310-01-256-9261, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Drs C3 & Aviation Company Dba Drs Data & Imaging Systems. Government technical data includes 9 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 | 5310-01-256-9261 |
| Primary Part Number | 600066-01 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Drs C3 & Aviation Company Dba Drs Data & Imaging Systems |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35,TYPE 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-W-52263 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.625 INCHES NOMINAL IN |
| Material Thickness | 0.075 INCHES NOMINAL IN |
| Recess Diameter | 0.172 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 303SE OR STEEL COMP 303CU OR STEEL COMP 303MA OR STEEL COMP 325 OR STEEL COMP 303 OVERALL |
| Recess Angle | 82.0 DEGREES NOMINAL |
| 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 |
|---|---|
| 600066-01 PRIMARY | Drs C3 & Aviation Company Dba Drs Data & Imaging Systems (USA) |
NSN 5310-01-256-9261 is a Washer,recessed, manufactured by Drs C3 & Aviation Company Dba Drs Data & Imaging Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-256-9261 has 1 manufacturer part number on file: 600066-01 (Drs C3 & Aviation Company Dba Drs Data & Imaging Systems).
Key specifications for 600066-01: Surface Treatment Document and Classification: QQ-P-35,TYPE 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Style Designator: RECESSED; Material Document and Classification: MIL-W-52263 MIL SPEC ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.625 INCHES NOMINAL IN. 9 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.