The O-Ring, cataloged under National Stock Number 5331-00-945-4430, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is L3harris Interstate Electronics Corporation. Government technical data includes 3 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-945-4430 |
| Primary Part Number | 321-422-1 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | L3harris Interstate Electronics Corporation |
| Status | ACTIVE |
| Cross-Sectional Height | 0.048 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN |
| Center Hole Diameter | 2.060 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 |
|---|---|
| 321-422-1 PRIMARY | L3harris Interstate Electronics Corporation (USA) |
NSN 5331-00-945-4430 is a O-Ring, manufactured by L3harris Interstate Electronics Corporation, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-945-4430 has 1 manufacturer part number on file: 321-422-1 (L3harris Interstate Electronics Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6930-01-301-7139. Verify interchangeability with system specifications before substitution.
Key specifications for 321-422-1: Cross-Sectional Height: 0.048 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN; Center Hole Diameter: 2.060 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 3 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.