The Plug,vent, cataloged under National Stock Number 5340-01-165-0397, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply. Government technical data includes 11 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-165-0397 |
| Primary Part Number | AA1576-4 |
| Item Name | Plug,vent |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| Status | ACTIVE |
| Refinement Medium Type | STRAINING |
| Length | 0.250 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| End Connection Type | UNTHREADED |
| Unthreaded End Diameter | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | WW-T-700/6, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Unthreaded End Length | 0.980 INCHES NOMINAL IN |
| Inside Diameter | 0.319 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 6061 |
| 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 |
|---|---|
| AA1576-4 PRIMARY | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
NSN 5340-01-165-0397 is a Plug,vent, manufactured by Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-165-0397 has 1 manufacturer part number on file: AA1576-4 (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply).
Key specifications for AA1576-4: Refinement Medium Type: STRAINING; Length: 0.250 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; End Connection Type: UNTHREADED; Unthreaded End Diameter: 0.250 INCHES NOMINAL IN. 11 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.