The Ventilator,air Circulating, cataloged under National Stock Number 5670-01-665-8175, is classified within Federal Supply Class 5670 (Building Components, Prefabricated) of the Construction and Building Materials group. The manufacturer of record is Hoffman Engineering Co Div of Federal Cartridge Corp. Government technical data includes 5 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5670-01-665-8175 |
| Primary Part Number | AVK23 |
| Item Name | Ventilator,air Circulating |
| FSC / FSG | 5670 / 56 — Building Components, Prefabricated |
| Manufacturer | Hoffman Engineering Co Div of Federal Cartridge Corp |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Shape | SQUARE |
| Color | GRAY/GREY |
| Material | STEEL |
| Mounting Hole Type | THRU HOLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AVK23 PRIMARY | Hoffman Engineering Co Div of Federal Cartridge Corp (USA) |
NSN 5670-01-665-8175 is a Ventilator,air Circulating, manufactured by Hoffman Engineering Co Div of Federal Cartridge Corp, classified under FSC 5670, Building Components, Prefabricated. Status: active.
NSN 5670-01-665-8175 has 1 manufacturer part number on file: AVK23 (Hoffman Engineering Co Div of Federal Cartridge Corp).
1 possible match (shared part number, not a government interchangeability claim): 4140-01-675-0634. Verify interchangeability with system specifications before substitution.
Key specifications for AVK23: Mounting Hole Quantity: 4; Overall Height: 3.250 INCHES NOMINAL IN; Shape: SQUARE; Overall Length: 3.250 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.