The Washer,flat, cataloged under National Stock Number 5310-01-531-4057, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Red Dot Corporation Dba Red Dot Corp. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Red Dot Corporation Dba Red Dot Corp (CAGE 62534) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-531-4057 |
| Primary Part Number | RD-5-4146-0M |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Red Dot Corporation Dba Red Dot Corp |
| 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 |
|---|---|
| RD-5-4146-0M PRIMARY | Red Dot Corporation Dba Red Dot Corp (USA) |
| Reference | Meaning |
|---|---|
| RD-5-4146-0 | 5/9 Secondary reference Red Dot Corporation Dba Red Dot Corp |
| RD-2-4389 | D/9 Drawing number reference only Red Dot Corporation Dba Red Dot Corp |
NSN 5310-01-531-4057 is a Washer,flat, manufactured by Red Dot Corporation Dba Red Dot Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-531-4057 has 1 manufacturer part number on file: RD-5-4146-0M (Red Dot Corporation Dba Red Dot Corp).
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.