The Washer,recessed, cataloged under National Stock Number 5310-01-513-3111, 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 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-513-3111 |
| Primary Part Number | 561-6404325-200 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Radius | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Style Designator | RECESSED |
| Material Document and Classification | ASTM-D4020, TY-UHMW-PE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Recess Diameter | 1.440 INCHES NOMINAL IN |
| Material | PLASTIC, POLYETHYLENE (PP) OVERALL |
| Hole Diameter | 0.812 INCHES NOMINAL 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 |
|---|---|
| 561-6404325-200 PRIMARY | Naval Sea Systems Command (USA) |
| 6404325C06-200 | Naval Sea Systems Command (USA) |
NSN 5310-01-513-3111 is a Washer,recessed, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-513-3111 has 2 manufacturer part numbers on file: 561-6404325-200 (Naval Sea Systems Command), 6404325C06-200 (Naval Sea Systems Command).
Key specifications for 561-6404325-200: Overall Height: 0.500 INCHES NOMINAL IN; Radius: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Style Designator: RECESSED; Material Document and Classification: ASTM-D4020, TY-UHMW-PE ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 7 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.