The O-Ring, cataloged under National Stock Number 5331-01-510-3865, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is United Defence Lp United Defence Armament System Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-510-3865 |
| Primary Part Number | M16685CL2TY2SZG |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | United Defence Lp United Defence Armament System Div |
| 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 |
|---|---|
| M16685CL2TY2SZG PRIMARY | United Defence Lp United Defence Armament System Div (USA) |
| Reference | Meaning |
|---|---|
| 5331PL0889119 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-510-3865 is a O-Ring, manufactured by United Defence Lp United Defence Armament System Div, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-510-3865 has 1 manufacturer part number on file: M16685CL2TY2SZG (United Defence Lp United Defence Armament System Div).
Key specifications for M16685CL2TY2SZG: End Item Identification: 127MM MK45 MOD4 NAVAL GUN MOUNT MM. 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.