PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7813Cock,plug

Essex Group Inc Controls Div · NSN 4820-00-040-1849 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-040-1849 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-040-1849. Primary manufacturer part number: 7813.
Features
  • Cock,plug — FSC 4820
  • Flow Style: TWO WAY TWO PORT 90 DEGREE PLUG TURN
  • Material: COPPER ALLOY FLOW CONTROL DEVICE
  • Material: COPPER ALLOY STEM
  • Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Valve Operation Method: MANUAL
  • Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS
Applications
  • Applications requiring Copper Alloy Flow Control Device construction
General Description

The Cock,plug, cataloged under National Stock Number 4820-00-040-1849, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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.

Technical Specifications
ParameterValue
NSN4820-00-040-1849
Primary Part Number7813
Item NameCock,plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEssex Group Inc Controls Div
StatusACTIVE
Flow StyleTWO WAY TWO PORT 90 DEGREE PLUG TURN
MaterialCOPPER ALLOY FLOW CONTROL DEVICE
MaterialCOPPER ALLOY STEM
Nominal Pipe Size Accommodated0.500 INCHES ALL ENDS IN
Thread DirectionRIGHT-HAND ALL ENDS
Valve Operation MethodMANUAL
Connection StylePLAIN, OPTIONAL END (PIPE) ALL ENDS
MaterialCOPPER ALLOY BODY
Features ProvidedADJUSTABLE ROTATION STOP
Nominal Thread Size0.500 INCHES ALL ENDS IN
Thread Series DesignatorNPT ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5905-00-104-0926G121-080-001 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Bae Systems Information and Electronic Systems Integration Inc.
5310-00-208-95007813 INTERCHANGEABLE
Nut,plain,hexagon
Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division
2825-00-388-1224D155649GPCS705-706-715-726-727 INTERCHANGEABLE
Arm Assembly
Northrop Grumman Systems Corporation Div Marine Systems
5945-00-729-78138379920 INTERCHANGEABLE
Relay,electromagnetic
U S Army Tank Automotive Command Amsta-Im-Mm
5930-00-898-8985 INTERCHANGEABLE
Switch,rotary
5305-01-173-35607813 INTERCHANGEABLE
Screw,cap,hexagon Head
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
5962-01-395-9761 INTERCHANGEABLE
Microcircuit,digital
5310-01-679-5685 INTERCHANGEABLE
Nut,self-Locking,hexagon
Cross-Reference Index
Part NumberManufacturer
7813 Essex Group Inc Controls Div (USA)
8331259 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
5905-00-104-0926INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
G121-080-001
5310-00-208-9500INTERCHANGEABLE
NUT,PLAIN,HEXAGON
7813
2825-00-388-1224INTERCHANGEABLE
ARM ASSEMBLY
D155649GPCS705-706-715-726-727
5945-00-729-7813INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
8379920
5930-00-898-8985INTERCHANGEABLE
SWITCH,ROTARY
5305-01-173-3560INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
7813
5962-01-395-9761INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5310-01-679-5685INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON

Frequently Asked Questions

What is NSN 4820-00-040-1849?

NSN 4820-00-040-1849 is a Cock,plug, manufactured by Essex Group Inc Controls Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-040-1849?

NSN 4820-00-040-1849 has 2 cross-referenced part numbers: 7813 (Essex Group Inc Controls Div), 8331259 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 4820-00-040-1849?

There are 8 known substitutes for 4820-00-040-1849: 5905-00-104-0926, 5310-00-208-9500, 2825-00-388-1224 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7813?

Key specifications for 7813: Flow Style: TWO WAY TWO PORT 90 DEGREE PLUG TURN; Material: COPPER ALLOY FLOW CONTROL DEVICE; Material: COPPER ALLOY STEM; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN. 11 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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