PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2171Cock,poppet Drain

Parker Hannifin Corporation Div Aerospace Group Headquarters · NSN 4820-00-328-3283 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-328-3283 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-328-3283. Primary manufacturer part number: 2171.
Features
  • Cock,poppet Drain — FSC 4820
  • Material: ALUMINUM ALLOY BODY
  • Thread Direction: RIGHT-HAND FIRST END
  • Thread Quantity Per Inch: 16 FIRST END
  • Thread Class: 3A FIRST END A
  • Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
  • Style Designator: STRAIGHT THRU
  • Nominal Thread Size: 0.750 INCHES FIRST END IN
Applications
  • Applications requiring Aluminum Alloy Body construction
General Description

The Cock,poppet Drain, cataloged under National Stock Number 4820-00-328-3283, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker Hannifin Corporation Div Aerospace Group Headquarters. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-328-3283
Primary Part Number2171
Item NameCock,poppet Drain
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Aerospace Group Headquarters
StatusACTIVE
MaterialALUMINUM ALLOY BODY
Thread DirectionRIGHT-HAND FIRST END
Thread Quantity Per Inch16 FIRST END
Thread Class3A FIRST END A
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Style DesignatorSTRAIGHT THRU
Nominal Thread Size0.750 INCHES FIRST END IN
Operating Pressure60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Test Data Document88277-7514541 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Thread Series DesignatorUNF FIRST END
Flow Control DevicePOPPET
Valve Operation MethodMANUAL
Surface TreatmentANODIZE
Connection TypeTHREADED EXTERNAL BOSS FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-147-86962171 INTERCHANGEABLE
Impeller,pump,centrifugal
Gusher Pumps
8345-00-151-660421-71 INTERCHANGEABLE
Streamer Set Attachment,award
Navy Clothing and Textile Research Facility Natick Laboratories
5120-00-221-114717-1 INTERCHANGEABLE
Punch and Die,grommet Inserting
Wilson Corporation, Inc. Dba Hollingsworth Mfg. Co. Div Hollingsworth Mfg.
9540-00-251-2651 INTERCHANGEABLE
Angle,structural
5325-00-285-8362 INTERCHANGEABLE
Grommet,nonmetallic
6160-00-444-2198SMB531943 INTERCHANGEABLE
Retainer,battery
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5910-00-563-6790 INTERCHANGEABLE
Capacitor,variable,air Dielectri
4730-00-604-19032171 INTERCHANGEABLE
Parts Kit,steam Trap
Plenty Inc
6145-00-728-4026 INTERCHANGEABLE
Braid,wire
5940-00-736-7395 INTERCHANGEABLE
Terminal Board
Cross-Reference Index
Part NumberManufacturer
2171 PRIMARY Parker Hannifin Corporation Div Aerospace Group Headquarters (USA)
7514541 The Boeing Company (USA)
7514541 The Boeing Company (USA)
Related Parts
4320-00-147-8696INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
2171
8345-00-151-6604INTERCHANGEABLE
STREAMER SET ATTACHMENT,AWARD
21-71
5120-00-221-1147INTERCHANGEABLE
PUNCH AND DIE,GROMMET INSERTING
17-1
9540-00-251-2651INTERCHANGEABLE
ANGLE,STRUCTURAL
5325-00-285-8362INTERCHANGEABLE
GROMMET,NONMETALLIC
6160-00-444-2198INTERCHANGEABLE
RETAINER,BATTERY
SMB531943
5910-00-563-6790INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
4730-00-604-1903INTERCHANGEABLE
PARTS KIT,STEAM TRAP
2171
6145-00-728-4026INTERCHANGEABLE
BRAID,WIRE
5940-00-736-7395INTERCHANGEABLE
TERMINAL BOARD
5330-00-805-8379INTERCHANGEABLE
SEAL,PLAIN ENCASED
21158-2171
5325-01-376-8637INTERCHANGEABLE
GROMMET,NONMETALLIC
217-00100

Frequently Asked Questions

What is NSN 4820-00-328-3283?

NSN 4820-00-328-3283 is a Cock,poppet Drain, manufactured by Parker Hannifin Corporation Div Aerospace Group Headquarters, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-328-3283?

NSN 4820-00-328-3283 has 3 cross-referenced part numbers: 2171 (Parker Hannifin Corporation Div Aerospace Group Headquarters), 7514541 (The Boeing Company), 7514541 (The Boeing Company).

What NSN replaces 4820-00-328-3283?

There are 12 known substitutes for 4820-00-328-3283: 4320-00-147-8696, 8345-00-151-6604, 5120-00-221-1147 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2171?

Key specifications for 2171: Material: ALUMINUM ALLOY BODY; Thread Direction: RIGHT-HAND FIRST END; Thread Quantity Per Inch: 16 FIRST END; Thread Class: 3A FIRST END A. 15 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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