The O-Ring, cataloged under National Stock Number 5331-01-312-3747, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-312-3747 |
| Primary Part Number | 2590 4172-603 |
| 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 |
|---|---|
| 2590 4172-603 PRIMARY | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 91537-991 | 5/9 Secondary reference U.s. Defense Services, Inc. Dba Usds |
| 91537-991 | 5/9 Secondary reference Amz Alabama Inc. |
| 25904172-603 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| F3850-013087 | 6/9 Informative reference only Forsvarets Materielverk |
NSN 5331-01-312-3747 is a O-Ring, manufactured by Amz Alabama Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-312-3747 has 1 manufacturer part number on file: 2590 4172-603 (Amz Alabama Inc.).
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.