PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31121-1Fan,vaneaxial

Trio Laboratories Inc · NSN 4140-01-347-3343 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-01-347-3343 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-347-3343. Primary manufacturer part number: 31121-1.
Features
  • Fan,vaneaxial — FSC 4140
  • 1 verified cross-reference
  • Primary manufacturer: Trio Laboratories Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fan,vaneaxial, cataloged under National Stock Number 4140-01-347-3343, is classified within Federal Supply Class 4140 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Trio Laboratories Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4140-01-347-3343
Primary Part Number31121-1
Item NameFan,vaneaxial
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerTrio Laboratories Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3020-00-015-860931121-1 INTERCHANGEABLE
Gear,spur
Rtx Corporation Div Pratt & Whitney
4810-00-172-389073212BN2MN00N0L111P3 INTERCHANGEABLE
Valve,solenoid
Parker-Hannifin Corporation Dba Pneutronics Div Fluid Control Division
5315-00-222-71415315H23-000 INTERCHANGEABLE
Pin,straight,headless
Us Army Aviation and Missile Command
5935-01-192-8013 INTERCHANGEABLE
Connector,receptacle,electrical
2815-01-339-79503 1121-1 INTERCHANGEABLE
Engine Block,diesel
Mak Americas Inc
1015-01-543-424531121-1 INTERCHANGEABLE
Block,filler,mortar
Ares, Inc
6150-01-710-313231121-1 INTERCHANGEABLE
Cable and Conduit Assembly,elect
Flexco Microwave Inc
Cross-Reference Index
Part NumberManufacturer
31121-1 Trio Laboratories Inc (USA)
Related Parts
3020-00-015-8609INTERCHANGEABLE
GEAR,SPUR
31121-1
4810-00-172-3890INTERCHANGEABLE
VALVE,SOLENOID
73212BN2MN00N0L111P3
5315-00-222-7141INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5315H23-000
5935-01-192-8013INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2815-01-339-7950INTERCHANGEABLE
ENGINE BLOCK,DIESEL
3 1121-1
1015-01-543-4245INTERCHANGEABLE
BLOCK,FILLER,MORTAR
31121-1
6150-01-710-3132INTERCHANGEABLE
CABLE AND CONDUIT ASSEMBLY,ELECT
31121-1

Frequently Asked Questions

What is NSN 4140-01-347-3343?

NSN 4140-01-347-3343 is a Fan,vaneaxial, manufactured by Trio Laboratories Inc, classified under FSC 4140 (No Item Name Available). Status: active.

What are the part numbers for NSN 4140-01-347-3343?

NSN 4140-01-347-3343 has 1 cross-referenced part number: 31121-1 (Trio Laboratories Inc).

What NSN replaces 4140-01-347-3343?

There are 7 known substitutes for 4140-01-347-3343: 3020-00-015-8609, 4810-00-172-3890, 5315-00-222-7141 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31121-1?

Key specifications for 31121-1: End Item Identification: H3000 RADAR. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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