The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-00-972-2820, 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 Prestolite Electric Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-00-972-2820 |
| Primary Part Number | 35987 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Prestolite Electric Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT RADIAL W/ BACK PLATE |
| Attachment Method | KEYWAY |
| Diameter | 6.990 INCHES NOMINAL IN |
| Blade Quantity | 12 |
| Width | 1.310 INCHES NOMINAL IN |
| Material | STEEL 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 |
|---|---|
| 35987 PRIMARY | Prestolite Electric Inc (USA) |
| Reference | Meaning |
|---|---|
| 35987 | 5/9 Secondary reference Prestolite Electric Inc |
NSN 4140-00-972-2820 is a Impeller,fan,centrifugal, manufactured by Prestolite Electric Inc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-972-2820 has 1 manufacturer part number on file: 35987 (Prestolite Electric Inc).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-287-9576. Verify interchangeability with system specifications before substitution.
Key specifications for 35987: Style Designator: STRAIGHT RADIAL W/ BACK PLATE; Attachment Method: KEYWAY; Diameter: 6.990 INCHES NOMINAL IN; Blade Quantity: 12. 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.