PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

475C-61NXWCock,poppet Drain

Auto-Valve, Inc · NSN 4820-00-171-3203 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-171-3203 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-171-3203. Primary manufacturer part number: 475C-61NXW.
Features
  • Cock,poppet Drain — FSC 4820
  • Thread Quantity Per Inch: 20 FIRST END
  • Thread Quantity Per Inch: 20 FIRST END
  • Thread Direction: RIGHT-HAND FIRST END
  • Style Designator: STRAIGHT THRU
  • Operating Pressure: 60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
  • Nominal Thread Size: 0.437 INCHES FIRST END IN
  • Seat Angle: 37.0 DEGREES FIRST END
Applications
  • Applications requiring Steel Overall construction
General Description

The Cock,poppet Drain, cataloged under National Stock Number 4820-00-171-3203, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Auto-Valve, Inc. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-171-3203
Primary Part Number475C-61NXW
Item NameCock,poppet Drain
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAuto-Valve, Inc
StatusCANCELLED
Thread Quantity Per Inch20 FIRST END
Thread Quantity Per Inch20 FIRST END
Thread DirectionRIGHT-HAND FIRST END
Style DesignatorSTRAIGHT THRU
Operating Pressure60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Nominal Thread Size0.437 INCHES FIRST END IN
Seat Angle37.0 DEGREES FIRST END
Thread Series DesignatorUNF FIRST END
MaterialSTEEL OVERALL
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Valve Operation MethodMANUAL
Thread Series DesignatorUNF FIRST END
Operating Pressure60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Connection StyleFLARED (TUBE) FIRST END
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Flow Control DeviceDISK
Seat Angle37.0 DEGREES FIRST END
Thread Class3A FIRST END A
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Style DesignatorSTRAIGHT THRU
MaterialSTEEL OVERALL
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Nominal Thread Size0.437 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5365-01-267-124539162 INTERCHANGEABLE
Spacer,plate
Fleet Readiness Center East Div Department of Navy
3110-01-301-766429843 INTERCHANGEABLE
Bearing,ball,annular
New Hampshire Ball Bearings Inc Div Hitech Division
3020-01-465-5050 INTERCHANGEABLE
Gear Set,bevel,matched
5110-01-540-1017 INTERCHANGEABLE
Stripper,optical Fiber,hand
Cross-Reference Index
Part NumberManufacturer
65307-03008-102 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
65307-03008-102 Airbus Deutschland Gmbh -Werk Bremen- (DEU)
475C-61NXW PRIMARY Auto-Valve, Inc (USA)
3-9162 PRIMARY Parker Hannifin Corporation Div Aerospace Group Headquarters (USA)
Related Parts
5365-01-267-1245INTERCHANGEABLE
SPACER,PLATE
39162
3110-01-301-7664INTERCHANGEABLE
BEARING,BALL,ANNULAR
29843
3020-01-465-5050INTERCHANGEABLE
GEAR SET,BEVEL,MATCHED
5110-01-540-1017INTERCHANGEABLE
STRIPPER,OPTICAL FIBER,HAND

Frequently Asked Questions

What is NSN 4820-00-171-3203?

NSN 4820-00-171-3203 is a Cock,poppet Drain, manufactured by Auto-Valve, Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-171-3203?

NSN 4820-00-171-3203 has 4 cross-referenced part numbers: 65307-03008-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65307-03008-102 (Airbus Deutschland Gmbh -Werk Bremen-), 475C-61NXW (Auto-Valve, Inc), 3-9162 (Parker Hannifin Corporation Div Aerospace Group Headquarters).

What NSN replaces 4820-00-171-3203?

There are 4 known substitutes for 4820-00-171-3203: 5365-01-267-1245, 3110-01-301-7664, 3020-01-465-5050 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 475C-61NXW?

Key specifications for 475C-61NXW: Thread Quantity Per Inch: 20 FIRST END; Thread Quantity Per Inch: 20 FIRST END; Thread Direction: RIGHT-HAND FIRST END; Style Designator: STRAIGHT THRU. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-171-3203 still in active supply?

NSN 4820-00-171-3203 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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