The Fan,circulating, cataloged under National Stock Number 4140-01-409-1540, 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 W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-409-1540 |
| Primary Part Number | 4C631 |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Speed Adjustments | THREE SPEED |
| Inclosure Type | GUARDED |
| Length | 25.000 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Flow Direction | OUTWARD |
| Style Designator | FIXED |
| Operating Speed at Rated Capacity in RPM | 770.0 AND 1100.0 AND 1300.0 |
| Prime Mover Type | ELECTRIC MOTOR |
| Electrical Connection Type | CORD W/ATTACHED PLUG |
| 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 |
|---|---|
| 4C631 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| 4C631/9016 | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| 4C631R/9016R | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 4C631 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 3016 | 5/9 Secondary reference Lasko Products, Inc Dba Galaxy Fans & Heaters |
| 4C631 | 5/9 Secondary reference Grainger Div of W W Grainger Inc |
NSN 4140-01-409-1540 is a Fan,circulating, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-409-1540 has 3 manufacturer part numbers on file: 4C631 (W.w. Grainger, Inc. Div Government Sales Division), 4C631/9016 (W.w. Grainger, Inc. Div Government Sales Division), 4C631R/9016R (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 4C631: Speed Adjustments: THREE SPEED; Inclosure Type: GUARDED; Length: 25.000 INCHES NOMINAL IN; Voltage in Volts and Current Type: 115.0 AC. 9 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.