The Retainer,packing, cataloged under National Stock Number 5330-01-478-7503, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 8 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-478-7503 |
| Primary Part Number | M8791/1-428 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN |
| Material Document and Classification | AS8791/1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SQUARE/RECTANGULAR |
| Specification/standard Data | 81349MIL-R-8791 REV D/CANCELED/ GOVERNMENT SPECIFICATION |
| Peripheral Diameter | 4.871 INCHES MINIMUM AND 4.873 INCHES MAXIMUM IN |
| Center Hole Diameter | 4.399 INCHES MINIMUM AND 4.401 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE 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 | X |
| Part Number | Manufacturer |
|---|---|
| M8791/1-428 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| M8791/1-428 | 5/9 Secondary reference U.S. Government activity |
| AS8791/1 | 5/9 Secondary reference U.S. Government activity |
| MIL-R-8791/1 | 5/9 Secondary reference U.S. Government activity |
| 2643-857-10 ITEM 49 | 5/9 Secondary reference U.S. Government activity |
| AS8791/1 | 5/9 Secondary reference Sae International Dba Sae International |
| M8791/1-428 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS8791/1 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 845-7108467 ITEM 49 | 5/9 Secondary reference Naval Sea Systems Command |
| 2643-857-10-49 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-478-7503 is a Retainer,packing, manufactured by Sae International Dba Sae International, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-478-7503 has 1 manufacturer part number on file: M8791/1-428 (Sae International Dba Sae International).
Key specifications for M8791/1-428: Cross-Sectional Height: 0.118 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN; Material Document and Classification: AS8791/1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: SQUARE/RECTANGULAR; Specification/standard Data: 81349MIL-R-8791 REV D/CANCELED/ GOVERNMENT SPECIFICATION. 8 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.