PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

53515Piston and Shoe Subassembly

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 4320-00-444-4721 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-444-4721 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-444-4721. Primary manufacturer part number: 53515.
Features
  • Piston and Shoe Subassembly — FSC 4320
  • General Characteristics Item Description: CONSIST OF 1 PISTON PART NO.57921,1 SHOE-PISTON PART NO. 53517,1 RING-WEAR PART NO. 68613,FSCM 75250
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Piston and Shoe Subassembly, cataloged under National Stock Number 4320-00-444-4721, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-444-4721
Primary Part Number53515
Item NamePiston and Shoe Subassembly
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
General Characteristics Item DescriptionCONSIST OF 1 PISTON PART NO.57921,1 SHOE-PISTON PART NO. 53517,1 RING-WEAR PART NO. 68613,FSCM 75250
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
1620-00-020-26515351-5 INTERCHANGEABLE
Valve,sleeve
Goodrich Aerospace Canada Ltd
3455-00-239-5471 INTERCHANGEABLE
Cutter,milling,involute Gear
5815-00-309-3882 INTERCHANGEABLE
Teletypewriter Subassembly
5940-00-549-2731842961PC3 INTERCHANGEABLE
Terminal,feedthru
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
53515 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
1620-00-020-2651INTERCHANGEABLE
VALVE,SLEEVE
5351-5
3455-00-239-5471INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
5815-00-309-3882INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
5940-00-549-2731INTERCHANGEABLE
TERMINAL,FEEDTHRU
842961PC3

Frequently Asked Questions

What is NSN 4320-00-444-4721?

NSN 4320-00-444-4721 is a Piston and Shoe Subassembly, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-444-4721?

NSN 4320-00-444-4721 has 1 cross-referenced part number: 53515 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 4320-00-444-4721?

There are 4 known substitutes for 4320-00-444-4721: 1620-00-020-2651, 3455-00-239-5471, 5815-00-309-3882 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 53515?

Key specifications for 53515: General Characteristics Item Description: CONSIST OF 1 PISTON PART NO.57921,1 SHOE-PISTON PART NO. 53517,1 RING-WEAR PART NO. 68613,FSCM 75250. 1 total characteristics are documented in the Federal Logistics Information System.

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