The Gasket, cataloged under National Stock Number 5330-01-338-6859, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-338-6859 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.0625 INCHES NOMINAL IN |
| Gasket Center to Flat Distance | 2.330 INCHES NOMINAL IN |
| Style Designator | CIRCULAR WITH FOUR PERIPHERAL FLATS |
| Material Document and Classification | MIL-C-6183B,CL1,GRC MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 4.020 INCHES NOMINAL IN |
| Aperture Diameter | 2.540 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 4.020 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND CORK OVERALL |
| Gasket Center to Second Flat Distance | 2.330 INCHES NOMINAL IN |
| Hole Diameter | 0.370 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 |
| Reference | Meaning |
|---|---|
| 510-14133-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-338-6859 is a Gasket, classified under FSC 5330, Packing and Gasket Materials. Status: active.
Key specifications for 5330-01-338-6859: Cross-Sectional Thickness: 0.0625 INCHES NOMINAL IN; Gasket Center to Flat Distance: 2.330 INCHES NOMINAL IN; Style Designator: CIRCULAR WITH FOUR PERIPHERAL FLATS; Material Document and Classification: MIL-C-6183B,CL1,GRC MIL SPEC ALL MATERIAL RESPONSES OVERALL. 12 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.