The Plug,vent, cataloged under National Stock Number 5340-01-440-0996, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Edwin B. Stimpson Company, Inc. Dba Stimpson. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-440-0996 |
| Primary Part Number | D4274 |
| Item Name | Plug,vent |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Edwin B. Stimpson Company, Inc. Dba Stimpson |
| Status | ACTIVE |
| Refinement Medium Type | FILTERING |
| Length | 0.229 INCHES NOMINAL IN |
| Vent Hole Shape | ROUND |
| End Connection Type | UNTHREADED |
| Outside Diameter | 0.297 INCHES MINIMUM AND 0.303 INCHES MAXIMUM IN |
| Inside Diameter | 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Refinement Device Type | FILTER DISK |
| 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 |
|---|---|
| D4274 PRIMARY | Edwin B. Stimpson Company, Inc. Dba Stimpson (USA) |
NSN 5340-01-440-0996 is a Plug,vent, manufactured by Edwin B. Stimpson Company, Inc. Dba Stimpson, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-440-0996 has 1 manufacturer part number on file: D4274 (Edwin B. Stimpson Company, Inc. Dba Stimpson).
Key specifications for D4274: Refinement Medium Type: FILTERING; Length: 0.229 INCHES NOMINAL IN; Vent Hole Shape: ROUND; End Connection Type: UNTHREADED. 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.