The Fan,circulating, cataloged under National Stock Number 4140-00-274-9638, 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 Lucent Technologies Inc Corporate Headquarters. Government technical data includes 20 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-00-274-9638 |
| Primary Part Number | B0704885ISSUE1 |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lucent Technologies Inc Corporate Headquarters |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 FLANGE AND 6 UNTHREADED HOLE(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | SINGLE |
| Frequency in Hertz | 50.0 AND 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Length | 3.625 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Flow Direction | INWARD |
| Housing Inside Diameter | 6.500 INCHES NOMINAL IN |
| Drive Type | DIRECT |
| Style Designator | FIXED |
| Operating Speed at Rated Capacity in RPM | 3450.0 |
| Surface Treatment | ANODIZE BLADE |
| Material | ALUMINUM ALLOY BLADE |
| Prime Mover Type | ELECTRIC MOTOR |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Prime Mover Drive Shaft Bearing Type | BALL |
| Electrical Connection Type | TERMINAL BLOCK |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 160.0 CUBIC FEET PER MINUTE NOMINAL |
| 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 |
|---|---|
| B0704885ISSUE1 | Lucent Technologies Inc Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| B0704885ISSUE1 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 022571 | 3/2 Design control — primary reference U.S. Government activity |
| MFV-KS5501-L-110AF | 5/2 Secondary reference U.S. Government activity |
| B0704885ISSUE1 | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
| MFVTYPEKS5501FL0WLSERIES110AS | 5/9 Secondary reference U.S. Government activity |
| MFV-KS5501L-110AA | 5/9 Secondary reference U.S. Government activity |
NSN 4140-00-274-9638 is a Fan,circulating, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-274-9638 has 1 manufacturer part number on file: B0704885ISSUE1 (Lucent Technologies Inc Corporate Headquarters).
1 possible match (shared part number, not a government interchangeability claim): 6520-01-273-1468. Verify interchangeability with system specifications before substitution.
Key specifications for B0704885ISSUE1: Mounting Facility Type and Quantity: 1 FLANGE AND 6 UNTHREADED HOLE(S); Speed Adjustments: SINGLE SPEED; Phase: SINGLE; Frequency in Hertz: 50.0 AND 60.0. 20 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.