The O-Ring, cataloged under National Stock Number 5331-01-616-4183, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Atico-Internormen. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-616-4183 |
| Primary Part Number | 326348 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Atico-Internormen |
| Status | ACTIVE |
| Cross-Sectional Height | 4.8 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 135.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 326348 PRIMARY | Atico-Internormen (USA) |
NSN 5331-01-616-4183 is a O-Ring, manufactured by Atico-Internormen, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-616-4183 has 1 manufacturer part number on file: 326348 (Atico-Internormen).
Key specifications for 326348: Cross-Sectional Height: 4.8 MILLIMETERS NOMINAL MM; Center Hole Diameter: 135.0 MILLIMETERS NOMINAL MM; End Item Identification: DUPLEX FILTER; 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.