The Washer,flat, cataloged under National Stock Number 5310-01-570-5313, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Maradyne Corporation. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Maradyne Corporation (CAGE 0DBY7) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-570-5313 |
| Primary Part Number | 0540A108 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Maradyne Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| 16KP645 | Oshkosh Defense Llc (USA) |
| 0540A108 PRIMARY | Maradyne Corporation (USA) |
| Reference | Meaning |
|---|---|
| 16KP645 | 5/9 Secondary reference Oshkosh Corp |
| 0540A108 | 5/9 Secondary reference Greenlees Filter Llc |
| L563R200 | D/9 Drawing number reference only Greenlees Filter Llc |
NSN 5310-01-570-5313 is a Washer,flat, manufactured by Maradyne Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-570-5313 has 2 manufacturer part numbers on file: 16KP645 (Oshkosh Defense Llc), 0540A108 (Maradyne Corporation).
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.