The Cap-Plug,protective,dust and Moi, cataloged under National Stock Number 5340-01-121-8776, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-121-8776 |
| Item Name | Cap-Plug,protective,dust and Moi |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Closed End Overall Diameter | 90.2 MILLIMETERS NOMINAL MM |
| Length Under Shoulder | 25.4 MILLIMETERS NOMINAL MM |
| Open End Inside Diameter | 93.0 MILLIMETERS NOMINAL MM |
| Material | PLASTIC, POLYETHYLENE (PP) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Reference | Meaning |
|---|---|
| 1051 | 5/9 Secondary reference U.S. Government activity |
| T1051 | 3/2 Design control — primary reference U.S. Government activity |
| 5185782 | 5/9 Secondary reference Naval Sea Systems Command |
| 1051 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-121-8776 is a Cap-Plug,protective,dust and Moi, classified under FSC 5340, Hardware, Commercial. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5950-01-360-2961. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-01-121-8776: Closed End Overall Diameter: 90.2 MILLIMETERS NOMINAL MM; Length Under Shoulder: 25.4 MILLIMETERS NOMINAL MM; Open End Inside Diameter: 93.0 MILLIMETERS NOMINAL MM; Material: PLASTIC, POLYETHYLENE (PP). 4 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.