The O-Ring, cataloged under National Stock Number 5331-01-477-6397, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Allied Systems Company Dba Allied Systems Co. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-477-6397 |
| Primary Part Number | 203532 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Allied Systems Company Dba Allied Systems Co |
| Status | ACTIVE |
| Cross-Sectional Height | 0.125 INCHES NOMINAL IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 3.875 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 203532 PRIMARY | Allied Systems Company Dba Allied Systems Co (USA) |
NSN 5331-01-477-6397 is a O-Ring, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-477-6397 has 1 manufacturer part number on file: 203532 (Allied Systems Company Dba Allied Systems Co).
Key specifications for 203532: Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 3.875 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 4 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.