The Plug,vent, cataloged under National Stock Number 5340-01-047-9747, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-047-9747 |
| Primary Part Number | 20535A440 |
| Item Name | Plug,vent |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Refinement Medium Type | FILTERING |
| Length | 0.438 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE |
| Vent Hole Shape | ROUND |
| Thread Length | 0.613 INCHES NOMINAL IN |
| End Connection Type | THREADED |
| Material Document and Classification | QQ-A-225/4, ALLOY 2014 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6, ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/9, ALLOY 7075 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.684 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN |
| Inside Diameter | 0.171 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Thread Class | 3A A |
| Material | ALUMINUM ALLOY OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 |
| Thread Size and Series/type Designator | 0.438-20 UNF |
| Vent Hole Quantity | 1 |
| Refinement Device Type | WIRE FABRIC |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 20535A440 PRIMARY | Pall Aeropower Corporation (USA) |
| Reference | Meaning |
|---|---|
| 20535-A-4-40W | 5/9 Secondary reference Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
NSN 5340-01-047-9747 is a Plug,vent, manufactured by Pall Aeropower Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-047-9747 has 1 manufacturer part number on file: 20535A440 (Pall Aeropower Corporation).
Key specifications for 20535A440: Refinement Medium Type: FILTERING; Length: 0.438 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE; Vent Hole Shape: ROUND. 15 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.