The O-Ring, cataloged under National Stock Number 5331-01-210-0640, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Williams Controls Inc. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Williams Controls Inc (CAGE 11331); Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (CAGE Z4117) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-210-0640 |
| Primary Part Number | 116304 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Williams Controls Inc |
| 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 |
|---|---|
| 3WB20 | Oshkosh Defense Llc (USA) |
| 116304 PRIMARY | Williams Controls Inc (USA) |
| 6322-116304 | Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (AUS) |
| Reference | Meaning |
|---|---|
| 3WB20 | 5/9 Secondary reference Oshkosh Corp |
NSN 5331-01-210-0640 is a O-Ring, manufactured by Williams Controls Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-210-0640 has 3 manufacturer part numbers on file: 3WB20 (Oshkosh Defense Llc), 116304 (Williams Controls Inc), 6322-116304 (Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales).
1 possible match (shared part number, not a government interchangeability claim): 5355-01-380-2038. 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.