The Gasket, cataloged under National Stock Number 5330-00-052-5647, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Smart Machines, Inc. Dba Barker and Williamson. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-052-5647 |
| Primary Part Number | 191B570339 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Smart Machines, Inc. Dba Barker and Williamson |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.031 INCHES NOMINAL IN |
| Style Designator | CIRCULAR |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 7.750 INCHES NOMINAL IN |
| Aperture Diameter | 6.188 INCHES NOMINAL IN |
| Bolt Hole Quantity | 24 |
| Bolt Circle Diameter | 7.125 INCHES NOMINAL IN |
| Material | CORK OVERALL |
| Hole Diameter | 0.171 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 |
|---|---|
| 191B570339 PRIMARY | Smart Machines, Inc. Dba Barker and Williamson (USA) |
| Reference | Meaning |
|---|---|
| 191B570339 | 5/9 Secondary reference Barker & Williamson |
NSN 5330-00-052-5647 is a Gasket, manufactured by Smart Machines, Inc. Dba Barker and Williamson, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-052-5647 has 1 manufacturer part number on file: 191B570339 (Smart Machines, Inc. Dba Barker and Williamson).
Key specifications for 191B570339: Cross-Sectional Thickness: 0.031 INCHES NOMINAL IN; Style Designator: CIRCULAR; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION; Outside Diameter: 7.750 INCHES NOMINAL IN. 9 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.