The Washer,flat, cataloged under National Stock Number 5310-01-543-2149, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Heil Trailer International, Llc. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Heil Trailer International, Llc (CAGE 1R5C8); Fastenal Co Dba Fastenal Co Div Fastenal Manufacturing (CAGE 1QNZ3); Wells Technology, Inc. (CAGE 324A9) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-543-2149 |
| Primary Part Number | 9965-0014M |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Heil Trailer International, Llc |
| 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 |
|---|---|
| 9965-0014M PRIMARY | Heil Trailer International, Llc (USA) |
| 71025 | Fastenal Co Dba Fastenal Co Div Fastenal Manufacturing (USA) |
| 71025 PRIMARY | Wells Technology, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 55000622 | 7/2 Vendor item drawing reference General Dynamics Ordnance and Tactical Systems, Inc. |
NSN 5310-01-543-2149 is a Washer,flat, manufactured by Heil Trailer International, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-543-2149 has 3 manufacturer part numbers on file: 9965-0014M (Heil Trailer International, Llc), 71025 (Fastenal Co Dba Fastenal Co Div Fastenal Manufacturing), 71025 (Wells Technology, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 8465-01-641-3800, 6680-01-733-7538. Verify interchangeability with system specifications before substitution.
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.