The Washer,flat, cataloged under National Stock Number 5310-01-244-8931, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Dressta North America Ltd. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Komatsu America Corp. (CAGE 0SAT8); Anixter (CAGE 03KT1); Dressta North America Ltd (CAGE 45RP7) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-244-8931 |
| Primary Part Number | 25551R1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Dressta North America Ltd |
| 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 |
|---|---|
| 25551R1 | Komatsu America Corp. (USA) |
| 25551R1 | Anixter (USA) |
| 25551R1 PRIMARY | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| 25551R1 | 7/2 Vendor item drawing reference Nd Defense Llc |
| 25551R1 | 3/9 Design control — primary reference Komatsu American Intl Co |
NSN 5310-01-244-8931 is a Washer,flat, manufactured by Dressta North America Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-244-8931 has 3 manufacturer part numbers on file: 25551R1 (Komatsu America Corp.), 25551R1 (Anixter), 25551R1 (Dressta North America Ltd).
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.