PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20576Piston

L3harris Technologies, Inc. Div Space and Airborne Systems · NSN 1040-00-611-8140 · FSC 1040 · No Item Name Available
Verified by PartsTable
NSN 1040-00-611-8140 — this item is cataloged by the U.S. Government under National Stock Number 1040-00-611-8140. Primary manufacturer part number: 20576.
Features
  • Piston — FSC 1040
  • 3 verified cross-references
  • Primary manufacturer: L3harris Technologies, Inc. Div Space and Airborne Systems
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston, cataloged under National Stock Number 1040-00-611-8140, is classified within Federal Supply Class 1040 (No Item Name Available) of the Weapons group. The primary manufacturer of record is L3harris Technologies, Inc. Div Space and Airborne Systems. This item has 3 commercial cross-references from 3 manufacturers, 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
FSC / FSG1040 — No Item Name Available (FSG 10)
ManufacturersNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (CAGE 10001); Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (CAGE 30003); L3harris Technologies, Inc. Div Space and Airborne Systems (CAGE 82340)
Technical Specifications
ParameterValue
NSN1040-00-611-8140
Primary Part Number20576
Item NamePiston
FSC / FSG1040 / 10 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Div Space and Airborne Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
1650-00-037-768120576 INTERCHANGEABLE
Cartridge,hydraulic
Hydro-Aire Aerospace Corp
5950-00-232-514432524 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
6625-00-255-5870 INTERCHANGEABLE
Ammeter
4820-00-793-6806N20576 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
3820-00-800-033720576 INTERCHANGEABLE
Gate,crusher
Eagle Crusher Co Inc Dba Stedman Machine Co
5970-01-231-1289 INTERCHANGEABLE
Insulator,disk
5120-01-430-8172 INTERCHANGEABLE
Crowfoot Attachment,socket Wrenc
5985-01-550-278620576 INTERCHANGEABLE
Waveguide
Waveline Inc
Cross-Reference Index
Part NumberManufacturer
54A50C103 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
54A50C103 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
20576 PRIMARY L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
Related Parts
1650-00-037-7681INTERCHANGEABLE
CARTRIDGE,HYDRAULIC
20576
5950-00-232-5144INTERCHANGEABLE
TRANSFORMER,POWER
32524
6625-00-255-5870INTERCHANGEABLE
AMMETER
4820-00-793-6806INTERCHANGEABLE
DISK,VALVE
N20576
3820-00-800-0337INTERCHANGEABLE
GATE,CRUSHER
20576
5970-01-231-1289INTERCHANGEABLE
INSULATOR,DISK
5120-01-430-8172INTERCHANGEABLE
CROWFOOT ATTACHMENT,SOCKET WRENC
5985-01-550-2786INTERCHANGEABLE
WAVEGUIDE
20576

Frequently Asked Questions

What is NSN 1040-00-611-8140?

NSN 1040-00-611-8140 is a Piston, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 1040 (No Item Name Available). Status: active.

What are the part numbers for NSN 1040-00-611-8140?

NSN 1040-00-611-8140 has 3 cross-referenced part numbers: 54A50C103 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 54A50C103 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 20576 (L3harris Technologies, Inc. Div Space and Airborne Systems).

What NSN replaces 1040-00-611-8140?

There are 8 known substitutes for 1040-00-611-8140: 1650-00-037-7681, 5950-00-232-5144, 6625-00-255-5870 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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