PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F44250PC81271Ring,diaphragm

Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp · NSN 5365-00-126-3666 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-126-3666 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-126-3666. Primary manufacturer part number: F44250PC81271.
Features
  • Ring,diaphragm — FSC 5365
  • 9 verified cross-references
  • Primary manufacturer: Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Ring,diaphragm, cataloged under National Stock Number 5365-00-126-3666, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp. This item has 9 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5365-00-126-3666
Primary Part NumberF44250PC81271
Item NameRing,diaphragm
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
1650-00-917-52628127-1 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Goodrich Aerospace Canada Ltd
5961-01-164-5104 INTERCHANGEABLE
Transistor
5310-01-486-161381-271 INTERCHANGEABLE
Washer,flat
Curtiss-Wright Controls Integrated Sensing, Inc.
Cross-Reference Index
Part NumberManufacturer
F44250PC81271 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Y1016B5PC11 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Y1016B2PC11 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
81271 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Y1016B1PC11 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Y1016A3PC11 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Y1016B3PC11 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
SN5750-10PC11 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
SN5750-11PC11 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Related Parts
1650-00-917-5262INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
8127-1
5961-01-164-5104INTERCHANGEABLE
TRANSISTOR
5310-01-486-1613INTERCHANGEABLE
WASHER,FLAT
81-271

Frequently Asked Questions

What is NSN 5365-00-126-3666?

NSN 5365-00-126-3666 is a Ring,diaphragm, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 5365 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5365-00-126-3666?

NSN 5365-00-126-3666 has 9 cross-referenced part numbers: F44250PC81271 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), Y1016B5PC11 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), Y1016B2PC11 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), 81271 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), Y1016B1PC11 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp) and 4 more.

What NSN replaces 5365-00-126-3666?

There are 3 known substitutes for 5365-00-126-3666: 1650-00-917-5262, 5961-01-164-5104, 5310-01-486-1613. Verify interchangeability with system specifications before substitution.

What are the specifications of F44250PC81271?

Key specifications for F44250PC81271: End Item Identification: 22108043614,22108145291,19253753002. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5365-00-126-3666 still in active supply?

NSN 5365-00-126-3666 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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