The Fan,centrifugal, cataloged under National Stock Number 4140-01-272-6929, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Twin City Fan Companies Ltd. Dba Tc Axial Div. Government technical data includes 10 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 | 4140-01-272-6929 |
| Primary Part Number | BC-8021-A |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Twin City Fan Companies Ltd. Dba Tc Axial Div |
| Status | ACTIVE |
| Speed Adjustments | SINGLE SPEED |
| Outlet Inside Height | 35.031 INCHES NOMINAL IN |
| Length | 61.531 INCHES NOMINAL IN |
| Drive Type | BELT |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Outlet Inside Width | 26.031 INCHES NOMINAL IN |
| Height | 56.250 INCHES NOMINAL IN |
| Width | 56.062 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| 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 |
|---|---|
| BC-8021-A PRIMARY | Twin City Fan Companies Ltd. Dba Tc Axial Div (USA) |
NSN 4140-01-272-6929 is a Fan,centrifugal, manufactured by Twin City Fan Companies Ltd. Dba Tc Axial Div, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-272-6929 has 1 manufacturer part number on file: BC-8021-A (Twin City Fan Companies Ltd. Dba Tc Axial Div).
1 possible match (shared part number, not a government interchangeability claim): 3030-01-272-7605. Verify interchangeability with system specifications before substitution.
Key specifications for BC-8021-A: Speed Adjustments: SINGLE SPEED; Outlet Inside Height: 35.031 INCHES NOMINAL IN; Length: 61.531 INCHES NOMINAL IN; Drive Type: BELT. 10 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.