The Fan,centrifugal, cataloged under National Stock Number 4140-01-312-5487, 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 26 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-312-5487 |
| Primary Part Number | 1TDU2 AND 2C335 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Outlet Location | BOTTOM AND TOP |
| Mounting Facility Type and Quantity | 2 BRACKET(S) |
| Speed Adjustments | SINGLE SPEED |
| Phase | SINGLE |
| Frequency in Hertz | 50.0 AND 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Outlet Inside Height | 5.562 INCHES NOMINAL IN |
| Length | 13.125 INCHES NOMINAL IN |
| Voltage in Volts and Current Type | 115.0 AC |
| Drive Type | DIRECT |
| Prime Mover Power Rating | 910.0 WATTS |
| Criticality Code Justification | FEAT |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Ambient Temp at Full Rated Power | 104.0 FAHRENHEIT DEGF |
| Discharge Direction | ANGULAR DOWN AND ANGULAR UP AND HORIZONTAL AND VERTICAL DOWN AND VERTICAL UP |
| Outlet Inside Width | 7.188 INCHES NOMINAL IN |
| Height | 14.875 INCHES NOMINAL IN |
| Operating Speed at Rated Capacity in RPM | 1400.0 |
| Surface Treatment | ENAMEL BAKED OVERALL |
| Width | 11.562 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| Prime Mover Drive Shaft Bearing Type | SLEEVE |
| Electrical Connection Type | WIRE LEAD |
| Static Pressure at Specified Air Flow Rate | ERR-060 |
| Air Flow Rate | 1210.0 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 1TDU2 AND 2C335 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 4C831 AND 2C335 | 5/9 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
| EC-F0039 | D/9 Drawing number reference only Raytheon E-Systems, Inc |
| EC-F0039-002 | 7/2 Vendor item drawing reference Raytheon E-Systems, Inc |
NSN 4140-01-312-5487 is a Fan,centrifugal, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-312-5487 has 1 manufacturer part number on file: 1TDU2 AND 2C335 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 1TDU2 AND 2C335: Outlet Location: BOTTOM AND TOP; Mounting Facility Type and Quantity: 2 BRACKET(S); Speed Adjustments: SINGLE SPEED; Phase: SINGLE. 26 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.