The Packing Assembly, cataloged under National Stock Number 5330-01-478-4085, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Greene Tweed & Co Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-478-4085 |
| Primary Part Number | 7346MT-987-4780 |
| Item Name | Packing Assembly |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Greene Tweed & Co Inc |
| Status | ACTIVE |
| Outside Diameter | 4.493 INCHES NOMINAL IN |
| Material Document and Classification | MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE RETAINER |
| Material Document and Classification | (5F573)COMPOUND 987 MFR REF SINGLE MATERIAL RESPONSE PACKING |
| Cross-Sectional Shape Style | TEE PACKING |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR RETAINER |
| Inside Diameter | 4.121 INCHES NOMINAL IN |
| Height | 0.424 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE RETAINER |
| Joint Type | SCARF-PERIPHERAL RETAINER |
| 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 |
|---|---|
| 7346MT-987-4780 PRIMARY | Greene Tweed & Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 37022-346-02-FMT | 1/2 Source control — Government-approved source U.S. Government activity |
| 7346MT-987-4780 | 5/9 Secondary reference Palmetto Inc |
NSN 5330-01-478-4085 is a Packing Assembly, manufactured by Greene Tweed & Co Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-478-4085 has 1 manufacturer part number on file: 7346MT-987-4780 (Greene Tweed & Co Inc).
Key specifications for 7346MT-987-4780: Outside Diameter: 4.493 INCHES NOMINAL IN; Material Document and Classification: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE RETAINER; Material Document and Classification: (5F573)COMPOUND 987 MFR REF SINGLE MATERIAL RESPONSE PACKING; Cross-Sectional Shape Style: TEE PACKING. 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.