The Washer,seal, cataloged under National Stock Number 5310-01-644-2631, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lake Shore Systems, Inc.. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-644-2631 |
| Primary Part Number | F166161 |
| Item Name | Washer,seal |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lake Shore Systems, Inc. |
| 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 |
|---|---|
| F166161 PRIMARY | Lake Shore Systems, Inc. (USA) |
| F181363 REV A ITEM NO 5 | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| F166161 REV A | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 5310-01-644-2631 is a Washer,seal, manufactured by Lake Shore Systems, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-644-2631 has 2 manufacturer part numbers on file: F166161 (Lake Shore Systems, Inc.), F181363 REV A ITEM NO 5 (Lake Shore Systems, Inc.).
Key specifications for F166161: Part Name Assigned by Controlling Agency: WASHER CAP TRUNION. 0 specifications are documented in the U.S. Government catalog.
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.