PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11840-2Bell End,fan

Rtx Corporation Div Pratt & Whitney · NSN 4140-00-179-0193 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-00-179-0193 — this item is cataloged by the U.S. Government under National Stock Number 4140-00-179-0193. Primary manufacturer part number: 11840-2.
Features
  • Bell End,fan — FSC 4140
  • General Characteristics Item Description: USED ON 4A90181-101A FAN A
  • 2 verified cross-references
  • Primary manufacturer: Rtx Corporation Div Pratt & Whitney
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Bell End,fan, cataloged under National Stock Number 4140-00-179-0193, 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 Rtx Corporation Div Pratt & Whitney. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4140-00-179-0193
Primary Part Number11840-2
Item NameBell End,fan
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerRtx Corporation Div Pratt & Whitney
StatusACTIVE
General Characteristics Item DescriptionUSED ON 4A90181-101A FAN A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-272-7334986139-2B INTERCHANGEABLE
Transformer,pulse
Raytheon Company Dba Raytheon
4320-01-358-856877858 INTERCHANGEABLE
Ring,wearing
Hampton Hydraulics, Llc
Cross-Reference Index
Part NumberManufacturer
11840-2 Hamilton Sundstrand Corporation (USA)
11840-2 PRIMARY Rtx Corporation Div Pratt & Whitney (USA)
Related Parts
5950-00-272-7334INTERCHANGEABLE
TRANSFORMER,PULSE
986139-2B
4320-01-358-8568INTERCHANGEABLE
RING,WEARING
77858

Frequently Asked Questions

What is NSN 4140-00-179-0193?

NSN 4140-00-179-0193 is a Bell End,fan, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 4140 (No Item Name Available). Status: active.

What are the part numbers for NSN 4140-00-179-0193?

NSN 4140-00-179-0193 has 2 cross-referenced part numbers: 11840-2 (Hamilton Sundstrand Corporation), 11840-2 (Rtx Corporation Div Pratt & Whitney).

What NSN replaces 4140-00-179-0193?

There are 2 known substitutes for 4140-00-179-0193: 5950-00-272-7334, 4320-01-358-8568. Verify interchangeability with system specifications before substitution.

What are the specifications of 11840-2?

Key specifications for 11840-2: General Characteristics Item Description: USED ON 4A90181-101A FAN A. 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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