The O-Ring, cataloged under National Stock Number 5331-01-474-6079, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Holmatro Incorporated. 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 | 5331-01-474-6079 |
| Primary Part Number | 190.593.374 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Holmatro Incorporated |
| Status | ACTIVE |
| Cross-Sectional Height | 16.0 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 85.0 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 |
|---|---|
| 190.593.374 PRIMARY | Holmatro Incorporated (USA) |
NSN 5331-01-474-6079 is a O-Ring, manufactured by Holmatro Incorporated, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-474-6079 has 1 manufacturer part number on file: 190.593.374 (Holmatro Incorporated).
Key specifications for 190.593.374: Cross-Sectional Height: 16.0 MILLIMETERS NOMINAL MM; Special Features: 70 SHORE HARDNESS; Center Hole Diameter: 85.0 MILLIMETERS NOMINAL MM; 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.