The Retainer,packing, cataloged under National Stock Number 5330-01-478-7750, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-478-7750 |
| Primary Part Number | 218100624 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Cross-Sectional Height | 3.000 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR |
| Peripheral Diameter | 16.495 INCHES MINIMUM AND 16.500 INCHES MAXIMUM IN |
| Center Hole Diameter | 15.492 INCHES MINIMUM AND 15.496 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 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 |
|---|---|
| 218100624 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| ENDS120889-005 | 5/9 Secondary reference U.S. Government activity |
| ENDS120889 ITEM 5 | 5/9 Secondary reference U.S. Government activity |
| 218100624 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-478-7750 is a Retainer,packing, manufactured by Derbyshire Machine & Tool Co, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-478-7750 has 1 manufacturer part number on file: 218100624 (Derbyshire Machine & Tool Co).
Key specifications for 218100624: Cross-Sectional Height: 3.000 INCHES NOMINAL IN; Cross-Sectional Shape Style: SQUARE/RECTANGULAR; Peripheral Diameter: 16.495 INCHES MINIMUM AND 16.500 INCHES MAXIMUM IN; Special Features: DOUBLE O-RING GROOVE IN RETAINER OUTSIDE DIAMETER. 5 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.