The Gasket, cataloged under National Stock Number 5330-00-178-1478, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Waterous Company. Government technical data includes 5 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. 2 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 | 5330-00-178-1478 |
| Primary Part Number | 51071 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Waterous Company |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.010 INCHES NOMINAL IN |
| Outside Diameter | 5.250 INCHES NOMINAL IN |
| Aperture Diameter | 3.562 INCHES NOMINAL IN |
| Bolt Circle Diameter | 4.500 INCHES NOMINAL IN |
| Hole Diameter | 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 51071 PRIMARY | Waterous Company (USA) |
NSN 5330-00-178-1478 is a Gasket, manufactured by Waterous Company, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-178-1478 has 1 manufacturer part number on file: 51071 (Waterous Company).
2 possible matches (shared part number, not a government interchangeability claim): 5935-00-727-4405, 6625-01-247-5786. Verify interchangeability with system specifications before substitution.
Key specifications for 51071: Cross-Sectional Thickness: 0.010 INCHES NOMINAL IN; Outside Diameter: 5.250 INCHES NOMINAL IN; Aperture Diameter: 3.562 INCHES NOMINAL IN; Bolt Circle Diameter: 4.500 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.