The O-Ring, cataloged under National Stock Number 5331-01-168-4201, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Amz Alabama Inc.. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Amz Alabama Inc. (CAGE 076M6); Bae Systems Hagglunds Aktiebolag (CAGE AC90N); Mercedes-Benz Ag (CAGE CN7Z7) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-168-4201 |
| Primary Part Number | 93611-991 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Amz Alabama 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 |
|---|---|
| 93611-991 PRIMARY | Amz Alabama Inc. (USA) |
| 4537800-727 | Bae Systems Hagglunds Aktiebolag (SWE) |
| 0049975348 | Mercedes-Benz Ag (DEU) |
| Reference | Meaning |
|---|---|
| 93611-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
| 4537800-727 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 0049975348 | 5/9 Secondary reference Daimler Ag |
NSN 5331-01-168-4201 is a O-Ring, manufactured by Amz Alabama Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-168-4201 has 3 manufacturer part numbers on file: 93611-991 (Amz Alabama Inc.), 4537800-727 (Bae Systems Hagglunds Aktiebolag), 0049975348 (Mercedes-Benz Ag).
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.