The Gasket, cataloged under National Stock Number 5330-01-239-4416, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-01-239-4416 |
| Primary Part Number | 212929 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Operating Medium | HYDRAULIC FLUID |
| Cross-Sectional Thickness | 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| Side Radius From Gasket Center | 2.100 INCHES NOMINAL IN |
| Material Document and Classification | S-728-B MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Aperture Diameter | 2.540 INCHES NOMINAL IN |
| Mounting Flange Length | 4.400 INCHES NOMINAL IN |
| Mounting Flange Width | 4.203 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 3.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Center to Center Distance Between Bolt Holes Along Width | 2.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Functional Description | FLANGE GASKET,MAIN VALVE ASSY |
| Material | ASBESTOS OVERALL |
| Hole Diameter | 0.531 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 |
NSN 5330-01-239-4416 is a Gasket, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-239-4416 has 2 manufacturer part numbers on file: 212929 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 212929 (Marine & Industrial Transmissions Ltd).
Key specifications for 212929: Operating Medium: HYDRAULIC FLUID; Cross-Sectional Thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN; Side Radius From Gasket Center: 2.100 INCHES NOMINAL IN; Material Document and Classification: S-728-B MFR REF SINGLE MATERIAL RESPONSE OVERALL. 14 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.