PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4793K45Cock,plug

Mcmaster-Carr Supply Co · NSN 4820-01-164-7771 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-164-7771 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-164-7771. Primary manufacturer part number: 4793K45.
Features
  • Cock,plug — FSC 4820
  • Nominal Thread Size: 0.500 INCHES FIRST END IN
  • Thread Series Designator: NPT SECOND END
  • Thread Direction: RIGHT-HAND FIRST END
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
  • Valve Operation Method: MANUAL
  • Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Connection Style: PLAIN, OPTIONAL END (PIPE) FIRST END
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Cock,plug, cataloged under National Stock Number 4820-01-164-7771, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN4820-01-164-7771
Primary Part Number4793K45
Item NameCock,plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMcmaster-Carr Supply Co
StatusCANCELLED
Nominal Thread Size0.500 INCHES FIRST END IN
Thread Series DesignatorNPT SECOND END
Thread DirectionRIGHT-HAND FIRST END
Nominal Thread Size0.500 INCHES SECOND END IN
Valve Operation MethodMANUAL
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Connection StylePLAIN, OPTIONAL END (PIPE) FIRST END
Flow StyleTWO WAY TWO PORT 90 DEGREE PLUG TURN
Thread Series DesignatorNPT FIRST END
Thread DirectionRIGHT-HAND SECOND END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
MaterialCOPPER ALLOY BODY
Connection TypeTHREADED INTERNAL PIPE FIRST END
Connection StylePLAIN (PIPE) SECOND END
Media for Which DesignedAIR SINGLE RESPONSE
Operating Pressure50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-005-73943835-27 INTERCHANGEABLE
Valve,safety Relief
Kahn and Company, Incorporated
4820-00-027-0994 INTERCHANGEABLE
Valve,safety Relief
4940-00-181-7590 INTERCHANGEABLE
Gun,air Blow
4820-00-585-7859 INTERCHANGEABLE
Valve,safety Relief
3415-00-804-171748A INTERCHANGEABLE
Grinding Machine,carbide Tool Bi
Textron Inc
4820-00-812-900948A1-4IN205PSI INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-00-836-2950 INTERCHANGEABLE
Valve,safety Relief
4820-00-837-8183 INTERCHANGEABLE
Valve,safety Relief
4820-00-837-8184115-4-50 INTERCHANGEABLE
Valve,safety Relief
Mid-State Sales, Inc. Div Defense Products Group
4820-00-840-428648A1-4IN220PSI INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Cross-Reference Index
Part NumberManufacturer
4793K45 PRIMARY Mcmaster-Carr Supply Co (USA)
76-11103 Department of Defense Project Manager-Mobile Electric Power (USA)
48A Essex Brass Corporation (USA)
Related Parts
4820-00-005-7394INTERCHANGEABLE
VALVE,SAFETY RELIEF
3835-27
4820-00-027-0994INTERCHANGEABLE
VALVE,SAFETY RELIEF
4940-00-181-7590INTERCHANGEABLE
GUN,AIR BLOW
4820-00-585-7859INTERCHANGEABLE
VALVE,SAFETY RELIEF
3415-00-804-1717INTERCHANGEABLE
GRINDING MACHINE,CARBIDE TOOL BI
48A
4820-00-812-9009INTERCHANGEABLE
VALVE,SAFETY RELIEF
48A1-4IN205PSI
4820-00-836-2950INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-837-8183INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-837-8184INTERCHANGEABLE
VALVE,SAFETY RELIEF
115-4-50
4820-00-840-4286INTERCHANGEABLE
VALVE,SAFETY RELIEF
48A1-4IN220PSI
4820-00-844-6849INTERCHANGEABLE
VALVE,SAFETY RELIEF
48A1-4IN75PSI
4140-00-936-3147INTERCHANGEABLE
BLOWER,AIR BARRIER
MODEL 48 STANDARD METAL HOUSING

Frequently Asked Questions

What is NSN 4820-01-164-7771?

NSN 4820-01-164-7771 is a Cock,plug, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-164-7771?

NSN 4820-01-164-7771 has 3 cross-referenced part numbers: 4793K45 (Mcmaster-Carr Supply Co), 76-11103 (Department of Defense Project Manager-Mobile Electric Power), 48A (Essex Brass Corporation).

What NSN replaces 4820-01-164-7771?

There are 12 known substitutes for 4820-01-164-7771: 4820-00-005-7394, 4820-00-027-0994, 4940-00-181-7590 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4793K45?

Key specifications for 4793K45: Nominal Thread Size: 0.500 INCHES FIRST END IN; Thread Series Designator: NPT SECOND END; Thread Direction: RIGHT-HAND FIRST END; Nominal Thread Size: 0.500 INCHES SECOND END IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-164-7771 still in active supply?

NSN 4820-01-164-7771 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