The Base,fan, cataloged under National Stock Number 4140-01-112-8550, 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 Penn Metal Fabricators Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4140-01-112-8550 |
| Primary Part Number | 331311 |
| Item Name | Base,fan |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Penn Metal Fabricators Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 331311 PRIMARY | Penn Metal Fabricators Inc (USA) |
NSN 4140-01-112-8550 is a Base,fan, manufactured by Penn Metal Fabricators Inc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-112-8550 has 1 manufacturer part number on file: 331311 (Penn Metal Fabricators Inc).
1 possible match (shared part number, not a government interchangeability claim): 6105-01-151-5452. Verify interchangeability with system specifications before substitution.
Key specifications for 331311: End Item Identification: 4140-00-255-7801 FAN,CIRCULATING. 0 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.