PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

78961Piston,linear Actuating Cylinder

Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator · NSN 3040-01-307-8857 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-307-8857 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-307-8857. Primary manufacturer part number: 78961.
Features
  • Piston,linear Actuating Cylinder — FSC 3040
  • 3 verified cross-references
  • Primary manufacturer: Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston,linear Actuating Cylinder, cataloged under National Stock Number 3040-01-307-8857, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePiston,linear Actuating Cylinder
FSC / FSG3040 — No Item Name Available (FSG 30)
ManufacturersEaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (CAGE 09790)
Technical Specifications
ParameterValue
NSN3040-01-307-8857
Primary Part Number78961
Item NamePiston,linear Actuating Cylinder
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2915-00-798-862678961 INTERCHANGEABLE
Housing Assy,main
Triumph Engine Control Systems Llc
1650-00-937-22238410-4 INTERCHANGEABLE
Support,servocylinder
Goodrich Aerospace Canada Ltd
4730-01-035-996384104 INTERCHANGEABLE
Adapter Assembly,valve
Tld Ace Corp Div Tld Ace
6210-01-077-291378961 INTERCHANGEABLE
Light,marker,airport Runway
U S Dept of Transportation Federal Aviation Administration
4810-01-306-686084104-1 INTERCHANGEABLE
Actuator,hydraulic-Pneumatic,rot
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
3040-01-307-376384498 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
3040-01-307-885884132 INTERCHANGEABLE
Rod,piston,linear Actuating Cyli
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
4810-01-308-056884118 INTERCHANGEABLE
Body,valve Actuator
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Cross-Reference Index
Part NumberManufacturer
84104 Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
78961 PRIMARY Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
84104 ITEM 10 Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
Related Parts
2915-00-798-8626INTERCHANGEABLE
HOUSING ASSY,MAIN
78961
1650-00-937-2223INTERCHANGEABLE
SUPPORT,SERVOCYLINDER
8410-4
4730-01-035-9963INTERCHANGEABLE
ADAPTER ASSEMBLY,VALVE
84104
6210-01-077-2913INTERCHANGEABLE
LIGHT,MARKER,AIRPORT RUNWAY
78961
4810-01-306-6860INTERCHANGEABLE
ACTUATOR,HYDRAULIC-PNEUMATIC,ROT
84104-1
3040-01-307-3763INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
84498
3040-01-307-8858INTERCHANGEABLE
ROD,PISTON,LINEAR ACTUATING CYLI
84132
4810-01-308-0568INTERCHANGEABLE
BODY,VALVE ACTUATOR
84118

Frequently Asked Questions

What is NSN 3040-01-307-8857?

NSN 3040-01-307-8857 is a Piston,linear Actuating Cylinder, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-307-8857?

NSN 3040-01-307-8857 has 3 cross-referenced part numbers: 84104 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), 78961 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), 84104 ITEM 10 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).

What NSN replaces 3040-01-307-8857?

There are 8 known substitutes for 3040-01-307-8857: 2915-00-798-8626, 1650-00-937-2223, 4730-01-035-9963 and 5 more. Verify interchangeability with system specifications before substitution.

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