The Washer,flat, cataloged under National Stock Number 5310-01-449-5982, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is A W Chesterton Co Div Sealing Device Division. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | A W Chesterton Co Div Sealing Device Division (CAGE 71431) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-449-5982 |
| Primary Part Number | 1697812 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | A W Chesterton Co Div Sealing Device Division |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 1697812 PRIMARY | A W Chesterton Co Div Sealing Device Division (USA) |
| Reference | Meaning |
|---|---|
| 098384 | 5/9 Secondary reference Blackmer System One, Inc. Div Blackmer System One, Inc. |
| 098384 | 5/9 Secondary reference A W Chesterton Co Div Sealing Device Division |
| 098384 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-449-5982 is a Washer,flat, manufactured by A W Chesterton Co Div Sealing Device Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-449-5982 has 1 manufacturer part number on file: 1697812 (A W Chesterton Co Div Sealing Device Division).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-539-8765. 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.