The Gasket, cataloged under National Stock Number 5330-00-781-4004, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-781-4004 |
| Primary Part Number | 6823256 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| FSC Application Data | ENGINE AIR BLEED VALVE,AIRCRAFT |
| Cross-Sectional Thickness | 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN |
| Style Designator | CIRCULAR |
| Material Document and Classification | AMS 5517 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR METAL |
| Outside Diameter | 2.625 INCHES NOMINAL IN |
| Aperture Diameter | 0.253 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Bolt Hole Quantity | 2 |
| Bolt Circle Diameter | 0.813 INCHES NOMINAL IN |
| Material | STEEL COMP 301 OVERALL |
| Hole Diameter | 0.217 INCHES MINIMUM AND 0.225 INCHES MAXIMUM 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 5330-00-781-4004 is a Gasket, manufactured by Rolls-Royce Corporation, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-781-4004 has 2 manufacturer part numbers on file: 6823256 (General Motors Corp), 6823256 (Rolls-Royce Corporation).
1 possible match (shared part number, not a government interchangeability claim): 2840-01-497-3870. Verify interchangeability with system specifications before substitution.
Key specifications for 6823256: FSC Application Data: ENGINE AIR BLEED VALVE,AIRCRAFT; Cross-Sectional Thickness: 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN; Style Designator: CIRCULAR; Material Document and Classification: AMS 5517 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 11 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.