PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21187Piston,valve

Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems · NSN 2915-01-291-7991 · FSC 2915 · No Item Name Available
Verified by PartsTable
NSN 2915-01-291-7991 — this item is cataloged by the U.S. Government under National Stock Number 2915-01-291-7991. Primary manufacturer part number: 21187.
Features
  • Piston,valve — FSC 2915
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Piston,valve, cataloged under National Stock Number 2915-01-291-7991, is classified within Federal Supply Class 2915 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems. This item has 1 commercial cross-reference 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: Active.

Catalog Facts
Item NamePiston,valve
FSC / FSG2915 — No Item Name Available (FSG 29)
ManufacturersEaton Corporation Dba Airframe Div Fuel & Motion Control Systems (CAGE 86090)
Technical Specifications
ParameterValue
NSN2915-01-291-7991
Primary Part Number21187
Item NamePiston,valve
FSC / FSG2915 / 29 — No Item Name Available
ManufacturerEaton Corporation Dba Airframe Div Fuel & Motion Control Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5940-00-177-99832412 INTERCHANGEABLE
Terminal Board
Entron Industries Limited Partnership Dba Entron Industries Property Div
5950-00-271-1844989112-50B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
5895-01-024-8736 INTERCHANGEABLE
Amplifier-Power Supply
Cross-Reference Index
Part NumberManufacturer
21187 PRIMARY Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems (USA)
Related Parts
5940-00-177-9983INTERCHANGEABLE
TERMINAL BOARD
2412
5950-00-271-1844INTERCHANGEABLE
COIL,RADIO FREQUENCY
989112-50B
5895-01-024-8736INTERCHANGEABLE
AMPLIFIER-POWER SUPPLY

Frequently Asked Questions

What is NSN 2915-01-291-7991?

NSN 2915-01-291-7991 is a Piston,valve, manufactured by Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems, classified under FSC 2915 (No Item Name Available). Status: active.

What are the part numbers for NSN 2915-01-291-7991?

NSN 2915-01-291-7991 has 1 cross-referenced part number: 21187 (Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems).

What NSN replaces 2915-01-291-7991?

There are 3 known substitutes for 2915-01-291-7991: 5940-00-177-9983, 5950-00-271-1844, 5895-01-024-8736. Verify interchangeability with system specifications before substitution.

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