PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILC1203Cock,plug

Essex Group Inc Controls Div · NSN 4820-00-272-3353 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-272-3353 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-272-3353. Primary manufacturer part number: MILC1203.
Features
  • Cock,plug — FSC 4820
  • Features Provided: NONADJUSTABLE ROTATION
  • Flow Style: TWO WAY TWO PORT 360 DEGREE PLUG TURN
  • Valve Operation Method: MANUAL
  • Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS
  • Media for Which Designed: AIR FIRST RESPONSE
  • Connection Type: THREADED INTERNAL PIPE ALL ENDS
  • Thread Direction: RIGHT-HAND ALL ENDS
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Cock,plug, cataloged under National Stock Number 4820-00-272-3353, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Essex Group Inc Controls Div. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-272-3353
Primary Part NumberMILC1203
Item NameCock,plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEssex Group Inc Controls Div
StatusCANCELLED
Features ProvidedNONADJUSTABLE ROTATION
Flow StyleTWO WAY TWO PORT 360 DEGREE PLUG TURN
Valve Operation MethodMANUAL
Connection StylePLAIN, OPTIONAL END (PIPE) ALL ENDS
Media for Which DesignedAIR FIRST RESPONSE
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Media for Which DesignedSTEAM SECOND RESPONSE
Nominal Thread Size0.125 INCHES ALL ENDS IN
Media for Which DesignedWATER-OIL-GAS THIRD RESPONSE
Operating Pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Thread Series DesignatorNPT ALL ENDS
Nondefinitive Spec/std Data1 TYPE AND B STYLE AND 1 DESIGN AND 2 DESIGN AND 3 DESIGN
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-026-8473009640 INTERCHANGEABLE
Cock,drain
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
4820-00-057-0694 INTERCHANGEABLE
Cock,drain
5996-00-078-7515137777-04 INTERCHANGEABLE
Amplifier,audio Frequency
Ge Aviation Systems Llc
5905-00-173-8791 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
4820-00-174-0330127C1 INTERCHANGEABLE
Cock,plug
Anderson Brass Co
4820-00-197-4984 INTERCHANGEABLE
Cock,drain
5310-00-252-40781178 INTERCHANGEABLE
Washer,flat
Wisconsin Motors, Llc
4820-00-258-1546 INTERCHANGEABLE
Cock,plug
7420-00-269-1002 INTERCHANGEABLE
Adding and Subtracting Machine
4820-00-272-3332 INTERCHANGEABLE
Cock,drain
Cross-Reference Index
Part NumberManufacturer
MILC1203 Essex Group Inc Controls Div (USA)
127C1 Anderson Brass Co (USA)
134-96804 Dana Corp Weatherhead Div (USA)
2056-105-48 B E Aerospace Inc Jacksonville Facility Dba Nordskog Industries (USA)
MILC1203 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
712 Crane Co Div Valve Div (USA)
A-A-59440 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
1178 Lunkenheimer Co (USA)
31E Imperial (USA)
Related Parts
4820-00-026-8473INTERCHANGEABLE
COCK,DRAIN
009640
4820-00-057-0694INTERCHANGEABLE
COCK,DRAIN
5996-00-078-7515INTERCHANGEABLE
AMPLIFIER,AUDIO FREQUENCY
137777-04
5905-00-173-8791INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
4820-00-174-0330INTERCHANGEABLE
COCK,PLUG
127C1
4820-00-197-4984INTERCHANGEABLE
COCK,DRAIN
5310-00-252-4078INTERCHANGEABLE
WASHER,FLAT
1178
4820-00-258-1546INTERCHANGEABLE
COCK,PLUG
7420-00-269-1002INTERCHANGEABLE
ADDING AND SUBTRACTING MACHINE
4820-00-272-3332INTERCHANGEABLE
COCK,DRAIN
4820-00-272-3346INTERCHANGEABLE
COCK,DRAIN
4820-00-275-2224INTERCHANGEABLE
COCK,DRAIN

Frequently Asked Questions

What is NSN 4820-00-272-3353?

NSN 4820-00-272-3353 is a Cock,plug, manufactured by Essex Group Inc Controls Div, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-272-3353?

NSN 4820-00-272-3353 has 9 cross-referenced part numbers: MILC1203 (Essex Group Inc Controls Div), 127C1 (Anderson Brass Co), 134-96804 (Dana Corp Weatherhead Div), 2056-105-48 (B E Aerospace Inc Jacksonville Facility Dba Nordskog Industries), MILC1203 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 4 more.

What NSN replaces 4820-00-272-3353?

There are 12 known substitutes for 4820-00-272-3353: 4820-00-026-8473, 4820-00-057-0694, 5996-00-078-7515 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILC1203?

Key specifications for MILC1203: Features Provided: NONADJUSTABLE ROTATION; Flow Style: TWO WAY TWO PORT 360 DEGREE PLUG TURN; Valve Operation Method: MANUAL; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-272-3353 still in active supply?

NSN 4820-00-272-3353 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.
PartsTable Design LLC · partstable.com