PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D665A1-3Valve,servo

Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division · NSN 1620-00-859-8475 · FSC 1620 · No Item Name Available
Verified by PartsTable
NSN 1620-00-859-8475 — this item is cataloged by the U.S. Government under National Stock Number 1620-00-859-8475. Primary manufacturer part number: D665A1-3.
Features
  • Valve,servo — FSC 1620
  • 3 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,servo, cataloged under National Stock Number 1620-00-859-8475, is classified within Federal Supply Class 1620 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division. This item has 3 commercial cross-references from 2 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 NameValve,servo
FSC / FSG1620 — No Item Name Available (FSG 16)
ManufacturersParker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (CAGE 9F512); Parker Hannifin Corporation Div Hydraulic Systems Division (CAGE 93835)
Technical Specifications
ParameterValue
NSN1620-00-859-8475
Primary Part NumberD665A1-3
Item NameValve,servo
FSC / FSG1620 / 16 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5360-00-070-889775030 INTERCHANGEABLE
Spring,helical,compression
Be Aerospace Consumables Management Dba Consumables Solutions Div Consumables Solutions
5120-00-293-0665200E INTERCHANGEABLE
Bar,wrecking
Lansing Forge Inc
6160-00-752-2184 INTERCHANGEABLE
Battery Filler,gravity
6160-00-796-9433 INTERCHANGEABLE
Battery Filler,gravity
5330-01-124-6640 INTERCHANGEABLE
Seal,plain Encased
5325-01-169-248975030 INTERCHANGEABLE
Ring,retaining
Paccar Winch Inc Dba Paccar Winch Division
4720-01-374-937675030 INTERCHANGEABLE
Hose Assembly,nonmetallic
DP Manufacturing Inc.
4520-01-592-87447-5030 INTERCHANGEABLE
Heating Element,electrical,nonim
G.s. Blodgett, Llc Div Blodgett
Cross-Reference Index
Part NumberManufacturer
066570104-5 Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA)
D665A1-3 PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA)
75030 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5360-00-070-8897INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
75030
5120-00-293-0665INTERCHANGEABLE
BAR,WRECKING
200E
6160-00-752-2184INTERCHANGEABLE
BATTERY FILLER,GRAVITY
6160-00-796-9433INTERCHANGEABLE
BATTERY FILLER,GRAVITY
5330-01-124-6640INTERCHANGEABLE
SEAL,PLAIN ENCASED
5325-01-169-2489INTERCHANGEABLE
RING,RETAINING
75030
4720-01-374-9376INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
75030
4520-01-592-8744INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
7-5030

Frequently Asked Questions

What is NSN 1620-00-859-8475?

NSN 1620-00-859-8475 is a Valve,servo, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division, classified under FSC 1620 (No Item Name Available). Status: active.

What are the part numbers for NSN 1620-00-859-8475?

NSN 1620-00-859-8475 has 3 cross-referenced part numbers: 066570104-5 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division), D665A1-3 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division), 75030 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 1620-00-859-8475?

There are 8 known substitutes for 1620-00-859-8475: 5360-00-070-8897, 5120-00-293-0665, 6160-00-752-2184 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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