The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-00-808-5336, 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 Blowers, Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4140-00-808-5336 |
| Primary Part Number | D12685A-7/8 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Blowers, Llc |
| Status | ACTIVE |
| Style Designator | CURVED BLADES SINGLE WIDTH |
| Attachment Method | KEYWAY AND SETSCREW |
| Diameter | 11.500 INCHES NOMINAL IN |
| Blade Quantity | 10 |
| Width | 5.312 INCHES NOMINAL IN |
| Material | ALUMINUM OVERALL |
| Rotation Direction for Which Designed | CLOCKWISE |
| 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 |
|---|---|
| D12685A-7/8 PRIMARY | Blowers, Llc (USA) |
| Reference | Meaning |
|---|---|
| D12685B | 5/9 Secondary reference Blowers, Llc |
| D12685B-7/8 | 5/9 Secondary reference Blowers, Llc |
| D12685A | 5/9 Secondary reference Blowers, Llc |
NSN 4140-00-808-5336 is a Impeller,fan,centrifugal, manufactured by Blowers, Llc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-808-5336 has 1 manufacturer part number on file: D12685A-7/8 (Blowers, Llc).
Key specifications for D12685A-7/8: Style Designator: CURVED BLADES SINGLE WIDTH; Attachment Method: KEYWAY AND SETSCREW; Diameter: 11.500 INCHES NOMINAL IN; Blade Quantity: 10. 7 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.