PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6425Cock,drain

Alter Harry Co the Div of T E C · NSN 4820-01-418-0316 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-418-0316 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-418-0316. Primary manufacturer part number: 6425.
Features
  • Cock,drain — FSC 4820
  • Thread Series Designator: NPT SECOND END
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Connection Type: THREADED EXTERNAL HOSE FIRST END
  • Media for Which Designed: GAS, NATURAL THIRD RESPONSE
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Style Designator: ANGLE
  • Media for Which Designed: OIL SECOND RESPONSE
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Cock,drain, cataloged under National Stock Number 4820-01-418-0316, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Alter Harry Co the Div of T E C. Government technical data includes 15 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
NSN4820-01-418-0316
Primary Part Number6425
Item NameCock,drain
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAlter Harry Co the Div of T E C
StatusACTIVE
Thread Series DesignatorNPT SECOND END
Thread DirectionRIGHT-HAND ALL ENDS
Connection TypeTHREADED EXTERNAL HOSE FIRST END
Media for Which DesignedGAS, NATURAL THIRD RESPONSE
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Style DesignatorANGLE
Media for Which DesignedOIL SECOND RESPONSE
Valve Operation MethodMANUAL
Connection StylePLAIN (PIPE) SECOND END
Connection StylePLAIN (HOSE) FIRST END
MaterialCOPPER ALLOY OVERALL
Media for Which DesignedWATER, FRESH FIRST RESPONSE
Thread Series DesignatorNH FIRST END
Nominal Thread Size0.750 INCHES ALL ENDS IN
Thread Quantity Per Inch11-1/2 FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5940-00-143-53626425 INTERCHANGEABLE
Terminal,lug
Mitsubishi Caterpillar Forklift America, Inc
5310-00-209-53238329302 INTERCHANGEABLE
Washer,key
U S Army Tank Automotive Command Amsta-Im-Mm
6680-00-212-6804L6838 INTERCHANGEABLE
Gage Rod-Cap,liquid Level
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5999-00-259-71036425 INTERCHANGEABLE
Cap,electrical
Eby Group, Llc, the Dba Eby Company Div Eby Company
3442-00-471-9428 INTERCHANGEABLE
Press,arbor,power-Operated
5977-01-053-8274 INTERCHANGEABLE
Brush,electrical Contact
6625-01-262-39546425 INTERCHANGEABLE
Analyzer,spectrum
Wayne Kerr Electronics Inc
2920-01-289-36216425 INTERCHANGEABLE
Lead Set,ignition,engine
Standard Motor Products
5120-01-425-8966 INTERCHANGEABLE
Handle,socket Wrench
5895-01-467-35516425 INTERCHANGEABLE
Coupler,test Fix
Tech Resources, Inc
Cross-Reference Index
Part NumberManufacturer
3112AS358 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
3112AS358-1 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
6425 PRIMARY Alter Harry Co the Div of T E C (USA)
Related Parts
5940-00-143-5362INTERCHANGEABLE
TERMINAL,LUG
6425
5310-00-209-5323INTERCHANGEABLE
WASHER,KEY
8329302
6680-00-212-6804INTERCHANGEABLE
GAGE ROD-CAP,LIQUID LEVEL
L6838
5999-00-259-7103INTERCHANGEABLE
CAP,ELECTRICAL
6425
3442-00-471-9428INTERCHANGEABLE
PRESS,ARBOR,POWER-OPERATED
5977-01-053-8274INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
6625-01-262-3954INTERCHANGEABLE
ANALYZER,SPECTRUM
6425
2920-01-289-3621INTERCHANGEABLE
LEAD SET,IGNITION,ENGINE
6425
5120-01-425-8966INTERCHANGEABLE
HANDLE,SOCKET WRENCH
5895-01-467-3551INTERCHANGEABLE
COUPLER,TEST FIX
6425
6550-01-573-9468INTERCHANGEABLE
SPREADER,PLATE,STAPH EXPRESS DIS
6425
6625-01-631-1956INTERCHANGEABLE
METER,RANGE INDICATOR
6425

Frequently Asked Questions

What is NSN 4820-01-418-0316?

NSN 4820-01-418-0316 is a Cock,drain, manufactured by Alter Harry Co the Div of T E C, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-418-0316?

NSN 4820-01-418-0316 has 3 cross-referenced part numbers: 3112AS358 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 3112AS358-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 6425 (Alter Harry Co the Div of T E C).

What NSN replaces 4820-01-418-0316?

There are 12 known substitutes for 4820-01-418-0316: 5940-00-143-5362, 5310-00-209-5323, 6680-00-212-6804 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6425?

Key specifications for 6425: Thread Series Designator: NPT SECOND END; Thread Direction: RIGHT-HAND ALL ENDS; Connection Type: THREADED EXTERNAL HOSE FIRST END; Media for Which Designed: GAS, NATURAL THIRD RESPONSE. 16 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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