The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-01-667-5409, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Sinclair & Rush, Inc. Dba Sinclair & Rush Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: PG.
| Item Name | Plug,protective,dust and Moistur |
| FSC / FSG | 5340 — Hardware, Commercial (FSG 53) |
| Manufacturers | Sinclair & Rush, Inc. Dba Sinclair & Rush Inc (CAGE 15819) |
| Parameter | Value |
|---|---|
| NSN | 5340-01-667-5409 |
| Primary Part Number | RSP0438 |
| Item Name | Plug,protective,dust and Moistur |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Sinclair & Rush, Inc. Dba Sinclair & Rush Inc |
| Status | ACTIVE |
| 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 | PG |
| Part Number | Manufacturer |
|---|---|
| RSP0438 PRIMARY | Sinclair & Rush, Inc. Dba Sinclair & Rush Inc (USA) |
| Reference | Meaning |
|---|---|
| 100949 | D/9 Drawing number reference only Sinclair & Rush, Inc. Dba Sinclair & Rush Inc |
NSN 5340-01-667-5409 is a Plug,protective,dust and Moistur, manufactured by Sinclair & Rush, Inc. Dba Sinclair & Rush Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-667-5409 has 1 manufacturer part number on file: RSP0438 (Sinclair & Rush, Inc. Dba Sinclair & Rush Inc).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-681-8565. Verify interchangeability with system specifications before substitution.
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.