The Washer,flat, cataloged under National Stock Number 5310-01-516-6253, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-516-6253 |
| Primary Part Number | MPL2585 PC 2-6,3-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| Status | ACTIVE |
| Overall Diameter | 0.375 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| 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 |
|---|---|
| 6BUW-SS | Derbyshire Machine & Tool Co (USA) |
| MPL2585 PC 2-6,3-3 PRIMARY | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| Reference | Meaning |
|---|---|
| MPL2585 PC 2-6,3-3 | 3/9 Design control — primary reference Derbyshire Machine & Tool Co |
NSN 5310-01-516-6253 is a Washer,flat, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-516-6253 has 2 manufacturer part numbers on file: 6BUW-SS (Derbyshire Machine & Tool Co), MPL2585 PC 2-6,3-3 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).
Key specifications for MPL2585 PC 2-6,3-3: Overall Diameter: 0.375 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 5 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.