The Packing Assembly, cataloged under National Stock Number 5330-01-121-8542, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-121-8542 |
| Primary Part Number | 74B410055-101 |
| Item Name | Packing Assembly |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Outside Diameter | 5.259 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR BOTTOM RING |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR TOP RING |
| Inside Diameter | 4.709 INCHES NOMINAL IN |
| Height | 0.569 INCHES NOMINAL IN |
| Joint Type | SCARF-PERIPHERAL TOP RING |
| Joint Type | SCARF-PERIPHERAL BOTTOM RING |
| 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 |
|---|---|
| 7427FT-972-N | Greene Tweed & Co Inc (USA) |
| 74B410055-101 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 7427FT-972-2N | 5/9 Secondary reference Palmetto Inc |
| 7427FT-972-2N | 5/9 Secondary reference Greene Tweed & Co Inc |
NSN 5330-01-121-8542 is a Packing Assembly, manufactured by The Boeing Company Div Defense, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-121-8542 has 2 manufacturer part numbers on file: 7427FT-972-N (Greene Tweed & Co Inc), 74B410055-101 (The Boeing Company Div Defense).
Key specifications for 74B410055-101: Outside Diameter: 5.259 INCHES NOMINAL IN; Cross-Sectional Shape Style: SQUARE/RECTANGULAR BOTTOM RING; Cross-Sectional Shape Style: SQUARE/RECTANGULAR TOP RING; Inside Diameter: 4.709 INCHES NOMINAL IN. 7 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.