The Fan,vaneaxial, cataloged under National Stock Number 4140-01-473-2143, 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 Fm Af, Llc Dba American Fan Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-473-2143 |
| Primary Part Number | B3723-1 |
| Item Name | Fan,vaneaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| 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 |
|---|---|
| B3723-1 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| R1-3571 CD-3723-1 | 7/2 Vendor item drawing reference Fm Af, Llc Dba American Fan Company |
| R1-3571 CD-3723-1 | 5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
NSN 4140-01-473-2143 is a Fan,vaneaxial, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-473-2143 has 1 manufacturer part number on file: B3723-1 (Fm Af, Llc Dba American Fan Company).
Key specifications for B3723-1: Special Features: 12 HOLES FOR MOUNTING;INCLUDES CONDUIT BOX W/ (2)-1" NPT PER B60302-4;FAN AND MOTOR WEIGHT IS 940 LBS;MOTOR WEIGHT IS 405 LBS LBS; End Item Identification: HULL VENTILATION ON LHD-7. 0 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.