The O-Ring, cataloged under National Stock Number 5331-01-305-5471, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hydrasearch Company, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (CAGE 0ASY6); Hydrasearch Company, Llc (CAGE 32142) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-305-5471 |
| Primary Part Number | 4504-2EA |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| M1419 | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| 4504-2EA PRIMARY | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4504-2,EA | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5331PL0675332 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-305-5471 is a O-Ring, manufactured by Hydrasearch Company, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-305-5471 has 2 manufacturer part numbers on file: M1419 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), 4504-2EA (Hydrasearch Company, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-322-8052, 5985-01-408-8640. Verify interchangeability with system specifications before substitution.
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.