The Gasket, cataloged under National Stock Number 5330-01-056-6517, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-01-056-6517 |
| Primary Part Number | A-4439-1 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Temp Rating | -85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF |
| Cross-Sectional Thickness | 0.093 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL OVERALL |
| Style Designator | CIRCULAR |
| Material Document and Classification | AMS 3304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Aperture Diameter | 0.600 INCHES NOMINAL IN |
| Elongation Percentage | 125 MAXIMUM |
| Material | RUBBER SILICONE CLASS Q OVERALL |
| 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 |
|---|---|
| A-4439-1 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| A-4439 | 5/9 Secondary reference Grimes Aerospace Company |
NSN 5330-01-056-6517 is a Gasket, manufactured by Grimes Aerospace Company, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-056-6517 has 1 manufacturer part number on file: A-4439-1 (Grimes Aerospace Company).
Key specifications for A-4439-1: Temp Rating: -85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF; Cross-Sectional Thickness: 0.093 INCHES NOMINAL IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL OVERALL; Style Designator: CIRCULAR. 10 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.