The Hood,exhaust,fan, cataloged under National Stock Number 4140-01-237-1508, 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 The Dewey Electronics Corporation Div Pitometer Log Division. Government technical data includes 1 specification, 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-237-1508 |
| Primary Part Number | 40307-1 |
| Item Name | Hood,exhaust,fan |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | The Dewey Electronics Corporation Div Pitometer Log Division |
| Status | ACTIVE |
| General Characteristics Item Description | AL ALLOY,.090 IN. THK PER QQ-A-250,CAUSTIC DIP FINISH; 8.188 IN. W; 1.094 IN. LG IN |
| 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 |
|---|---|
| 40307-1 PRIMARY | The Dewey Electronics Corporation Div Pitometer Log Division (USA) |
NSN 4140-01-237-1508 is a Hood,exhaust,fan, manufactured by The Dewey Electronics Corporation Div Pitometer Log Division, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-237-1508 has 1 manufacturer part number on file: 40307-1 (The Dewey Electronics Corporation Div Pitometer Log Division).
2 possible matches (shared part number, not a government interchangeability claim): 6150-01-252-9300, 5315-01-320-3496. Verify interchangeability with system specifications before substitution.
Key specifications for 40307-1: General Characteristics Item Description: AL ALLOY,.090 IN. THK PER QQ-A-250,CAUSTIC DIP FINISH; 8.188 IN. W; 1.094 IN. LG IN; End Item Identification: ELECTRO MECHANICAL LOG EQUIP.,PITOMETER LOG DIV MODEL MARK 6 MOD 2. 1 specification is 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.