The O-Ring, cataloged under National Stock Number 5331-00-740-6058, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-740-6058 |
| Primary Part Number | NM304 3-906 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| 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 |
|---|---|
| NM304 3-906 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| 28788 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| 3-906 N304-75 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 3-6 | 3/9 Design control — primary reference Parker-Hannifin Corp Div O-Ring Division |
| 3-6 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
NSN 5331-00-740-6058 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-740-6058 has 1 manufacturer part number on file: NM304 3-906 (Parker-Hannifin Corp Div O-Ring Division).
3 possible matches (shared part number, not a government interchangeability claim): 5331-01-154-3998, 5360-01-284-7857, 4320-01-301-7955. Verify interchangeability with system specifications before substitution.
Key specifications for NM304 3-906: Special Features: CROSS-SECTIONAL SHAPE STYLE:116 IRREGULAR SHAPE; Part Name Assigned by Controlling Agency: BUNA N O-RING. 0 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.