The Plug,vent, cataloged under National Stock Number 5340-01-190-2158, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Leroi International Inc Dba Compair Leroi. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Plug,vent |
| FSC / FSG | 5340 — Hardware, Commercial (FSG 53) |
| Manufacturers | Leroi International Inc Dba Compair Leroi (CAGE 1XBP3) |
| Parameter | Value |
|---|---|
| NSN | 5340-01-190-2158 |
| Primary Part Number | C4040 |
| Item Name | Plug,vent |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Leroi International Inc Dba Compair Leroi |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| C4040 PRIMARY | Leroi International Inc Dba Compair Leroi (USA) |
| 0070342 | Leroi International Inc Dba Compair Leroi (USA) |
| Reference | Meaning |
|---|---|
| C4040 | 5/9 Secondary reference Compair Kellogg Div of Robertshaw Controls Co |
| 0070342 | 5/9 Secondary reference Compair Kellogg Div of Robertshaw Controls Co |
NSN 5340-01-190-2158 is a Plug,vent, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-190-2158 has 2 manufacturer part numbers on file: C4040 (Leroi International Inc Dba Compair Leroi), 0070342 (Leroi International Inc Dba Compair Leroi).
1 possible match (shared part number, not a government interchangeability claim): 1080-01-594-1957. 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.