The Ring,retaining, cataloged under National Stock Number 5325-01-437-3850, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Mackay Communications Inc Dba Mackay Marine. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Vaf Instruments B.v. (CAGE H2293); Mackay Communications Inc Dba Mackay Marine (CAGE 3K816) |
| Parameter | Value |
|---|---|
| NSN | 5325-01-437-3850 |
| Primary Part Number | M2L3143-1A ITEM 2 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Mackay Communications Inc Dba Mackay Marine |
| 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 |
|---|---|
| 0621-0045 | Vaf Instruments B.v. (NLD) |
| M2L3143-1A ITEM 2 PRIMARY | Mackay Communications Inc Dba Mackay Marine (USA) |
| Reference | Meaning |
|---|---|
| 0621-0045 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5325-01-437-3850 is a Ring,retaining, manufactured by Mackay Communications Inc Dba Mackay Marine, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-437-3850 has 2 manufacturer part numbers on file: 0621-0045 (Vaf Instruments B.v.), M2L3143-1A ITEM 2 (Mackay Communications Inc Dba Mackay Marine).
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.