The Retainer,packing, cataloged under National Stock Number 5330-01-020-9521, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 21 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-020-9521 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Cross-Sectional Height | 0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZW |
| Material Document and Classification | SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR |
| Cut Type | DIAGONAL OVERALL |
| Departure From Cited Document | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Peripheral Diameter | 0.613 INCHES MINIMUM AND 0.619 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.443 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN |
| Material | PLASTIC TETRAFLUOROETHYLENE OVERALL |
| Joint Type | SCARF-PERIPHERAL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| V1D10862 ITEM 29 | 5/1 Secondary reference U.S. Government activity |
| V3D10233 ITEM 40 | 5/1 Secondary reference U.S. Government activity |
| V3D10254 TIEM 35 | 5/1 Secondary reference U.S. Government activity |
| V3C10175 ITEM 15CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3D10108 ITEM 40 | 5/1 Secondary reference U.S. Government activity |
| V1D10862 ITEM 29CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3D10075PC35 | 5/1 Secondary reference U.S. Government activity |
| MS28774 | 4/1 Identification reference U.S. Government activity |
| MS28774-111CP | 2/2 Government specification standardization U.S. Government activity |
| MS28774-111 | 5/9 Secondary reference U.S. Government activity |
| 10119572 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| M8791/1-111 | 5/1 Secondary reference Sae International Dba Sae International |
| V3D10254 ITEM 35CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| SAE-AS8791 | 5/1 Secondary reference Sae International Dba Sae International |
| MIL-R-8791/1-111 | 5/9 Secondary reference U.S. Government activity |
| V3D10108 ITEM 40CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3C10175 ITEM 15 | 5/1 Secondary reference U.S. Government activity |
| V3D10075PC35CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| M8791/1-111 | 5/9 Secondary reference U.S. Government activity |
| V3D10233 ITEM 40CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 5330-01-020-9521 is a Retainer,packing, classified under FSC 5330, Packing and Gasket Materials. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-428-9150, 5330-01-553-5704. Verify interchangeability with system specifications before substitution.
Key specifications for 5330-01-020-9521: Cross-Sectional Height: 0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN; Criticality Code Justification: ZZZW; Material Document and Classification: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: SQUARE/RECTANGULAR. 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.