The Washer,lock, cataloged under National Stock Number 5310-01-448-2728, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Jerome Group Inc Dba Jerome Medical. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-448-2728 |
| Primary Part Number | 43M |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Jerome Group Inc Dba Jerome Medical |
| 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 |
|---|---|
| SYSTEM II REF 43 | The Jerome Group Inc Dba Jerome Medical (USA) |
| GS-550-430-Q | B Braun Medical Ltd (GBR) |
| 43M PRIMARY | The Jerome Group Inc Dba Jerome Medical (USA) |
NSN 5310-01-448-2728 is a Washer,lock, manufactured by The Jerome Group Inc Dba Jerome Medical, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-448-2728 has 3 manufacturer part numbers on file: SYSTEM II REF 43 (The Jerome Group Inc Dba Jerome Medical), GS-550-430-Q (B Braun Medical Ltd), 43M (The Jerome Group Inc Dba Jerome Medical).
1 possible match (shared part number, not a government interchangeability claim): 7720-01-542-1806. Verify interchangeability with system specifications before substitution.
Key specifications for 43M: Special Features: SPLIT; 0.375 IN. DIA IN. 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.