The Blower Assembly, cataloged under National Stock Number 4140-01-221-4050, 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. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Blower Assembly |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Lucent Technologies Inc Corporate Headquarters (CAGE 3B4M0) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-221-4050 |
| Primary Part Number | T-251-1040 |
| Item Name | Blower Assembly |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lucent Technologies Inc Corporate Headquarters |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| T-251-1040 PRIMARY | Lucent Technologies Inc Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| T-251-1040 | 3/9 Design control — primary reference Lucent Technologies Inc Dba Federal Marketing Group |
| T-251-1040 | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 4140-01-221-4050 is a Blower Assembly, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-221-4050 has 1 manufacturer part number on file: T-251-1040 (Lucent Technologies Inc Corporate Headquarters).
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.