The Washer,lock, cataloged under National Stock Number 5310-01-445-6443, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Buffaloes Fire Pump Inc. Dba R B Pump Co. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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,lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Buffaloes Fire Pump Inc. Dba R B Pump Co (CAGE 62503) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-445-6443 |
| Primary Part Number | 92147A033 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Buffaloes Fire Pump Inc. Dba R B Pump Co |
| 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 |
|---|---|
| 92147A033 PRIMARY | Buffaloes Fire Pump Inc. Dba R B Pump Co (USA) |
| Reference | Meaning |
|---|---|
| 10722 ITEM 24 | C/1 Advisory reference — outside the item-of-supply concept Naval Command Control and Ocean Surveillance Center in Service Engineering Div West Coast |
NSN 5310-01-445-6443 is a Washer,lock, manufactured by Buffaloes Fire Pump Inc. Dba R B Pump Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-445-6443 has 1 manufacturer part number on file: 92147A033 (Buffaloes Fire Pump Inc. Dba R B Pump Co).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-560-2862, 5310-01-577-5632. 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.