PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

41970Piston Assy,interna

Napco International Llc Dba Napco International Inc · NSN 2815-00-646-9725 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-646-9725 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-646-9725. Primary manufacturer part number: 41970.
Features
  • Piston Assy,interna — FSC 2815
  • 2 verified cross-references
  • Primary manufacturer: Napco International Llc Dba Napco International Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston Assy,interna, cataloged under National Stock Number 2815-00-646-9725, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. This item has 2 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 Assy,interna
FSC / FSG2815 — No Item Name Available (FSG 28)
ManufacturersNapco International Llc Dba Napco International Inc (CAGE 95201)
Technical Specifications
ParameterValue
NSN2815-00-646-9725
Primary Part Number41970
Item NamePiston Assy,interna
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4810-00-072-894142584 INTERCHANGEABLE
Sleeve and Slide,directional Con
Woodward Hrt Inc
3110-00-100-0583643280 INTERCHANGEABLE
Cup,tapered Roller Bearing
Wiggins Lift Co Inc
5360-00-837-0705N41970 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
2940-00-855-559042584 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
5950-01-122-4249554963-1 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon Co
3110-01-153-058242584 INTERCHANGEABLE
Cup,tapered Roller Bearing
Kenworth Truck Co a Div of Paccar Inc
5930-01-160-871168674 INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
5998-01-328-521341970 INTERCHANGEABLE
Printed Circuit Board
Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion
Cross-Reference Index
Part NumberManufacturer
41970 PRIMARY Napco International Llc Dba Napco International Inc (USA)
42584 Napco International Llc Dba Napco International Inc (USA)
Related Parts
4810-00-072-8941INTERCHANGEABLE
SLEEVE AND SLIDE,DIRECTIONAL CON
42584
3110-00-100-0583INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
643280
5360-00-837-0705INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
N41970
2940-00-855-5590INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42584
5950-01-122-4249INTERCHANGEABLE
TRANSFORMER,POWER
554963-1
3110-01-153-0582INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
42584
5930-01-160-8711INTERCHANGEABLE
SWITCH,FLOW
68674
5998-01-328-5213INTERCHANGEABLE
PRINTED CIRCUIT BOARD
41970

Frequently Asked Questions

What is NSN 2815-00-646-9725?

NSN 2815-00-646-9725 is a Piston Assy,interna, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 2815 (No Item Name Available). Status: active.

What are the part numbers for NSN 2815-00-646-9725?

NSN 2815-00-646-9725 has 2 cross-referenced part numbers: 41970 (Napco International Llc Dba Napco International Inc), 42584 (Napco International Llc Dba Napco International Inc).

What NSN replaces 2815-00-646-9725?

There are 8 known substitutes for 2815-00-646-9725: 4810-00-072-8941, 3110-00-100-0583, 5360-00-837-0705 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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