PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10596LC 1/2Cock,plug

Mc Donald a Y Mfg Co · NSN 4820-00-136-1085 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-136-1085 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-136-1085. Primary manufacturer part number: 10596LC 1/2.
Features
  • Cock,plug — FSC 4820
  • Material: COPPER ALLOY OVERALL
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Flow Style: TWO WAY TWO PORT 360 DEGREE PLUG TURN
  • Valve Operation Method: MANUAL
  • Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS
  • Thread Series Designator: NPTF ALL ENDS
  • Nominal Thread Size: 0.500 INCHES ALL ENDS IN
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Cock,plug, cataloged under National Stock Number 4820-00-136-1085, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mc Donald a Y Mfg Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 6 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
NSN4820-00-136-1085
Primary Part Number10596LC 1/2
Item NameCock,plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMc Donald a Y Mfg Co
StatusCANCELLED
MaterialCOPPER ALLOY OVERALL
Thread DirectionRIGHT-HAND ALL ENDS
Flow StyleTWO WAY TWO PORT 360 DEGREE PLUG TURN
Valve Operation MethodMANUAL
Connection StylePLAIN, OPTIONAL END (PIPE) ALL ENDS
Thread Series DesignatorNPTF ALL ENDS
Nominal Thread Size0.500 INCHES ALL ENDS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5930-00-007-0572 INTERCHANGEABLE
Handle,switch
5310-00-045-1013 INTERCHANGEABLE
Nut,self-Locking,hexagon
4730-00-193-0875 INTERCHANGEABLE
Bushing,pipe
5330-00-498-4890 INTERCHANGEABLE
Seal,plain Encased
4720-00-586-5205XCM-X-8016-060 INTERCHANGEABLE
Hose Assembly,nonmetallic
Blue Tee Corp. Dba Gefco
5975-00-606-64975048-2 INTERCHANGEABLE
Interconnecting Box
Microwave Devices Inc
5330-00-641-209150482 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
5935-00-814-4916100428 INTERCHANGEABLE
Connector,receptacle,electrical
Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services
5935-00-828-3818BFR14S2P1 INTERCHANGEABLE
Connector,receptacle,electrical
Itt Cannon Llc
5985-01-020-6955582R356H02 INTERCHANGEABLE
Waveguide Assembly
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Cross-Reference Index
Part NumberManufacturer
504P69 Cummins Power Generation Inc. (USA)
504-69 Cummins Power Generation Inc. (USA)
10596-LC Mc Donald a Y Mfg Co (USA)
13211E6742 Cecom Lr Center (USA)
4820001361085 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
10596LC 1/2 PRIMARY Mc Donald a Y Mfg Co (USA)
04306-1088 Harsco Corp Bmy-Combat Systems Div (USA)
504P30 Cummins Power Generation Inc. (USA)
504-82 Cummins Power Generation Inc. (USA)
504A82 Cummins Power Generation Inc. (USA)
1260-1-2 Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division (USA)
Related Parts
5930-00-007-0572INTERCHANGEABLE
HANDLE,SWITCH
5310-00-045-1013INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
4730-00-193-0875INTERCHANGEABLE
BUSHING,PIPE
5330-00-498-4890INTERCHANGEABLE
SEAL,PLAIN ENCASED
4720-00-586-5205INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
XCM-X-8016-060
5975-00-606-6497INTERCHANGEABLE
INTERCONNECTING BOX
5048-2
5330-00-641-2091INTERCHANGEABLE
SEAL,PLAIN ENCASED
50482
5935-00-814-4916INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
100428
5935-00-828-3818INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
BFR14S2P1
5985-01-020-6955INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
582R356H02
5330-01-070-4849INTERCHANGEABLE
GASKET
50482
5940-01-155-8369INTERCHANGEABLE
SPLICE,CONDUCTOR

Frequently Asked Questions

What is NSN 4820-00-136-1085?

NSN 4820-00-136-1085 is a Cock,plug, manufactured by Mc Donald a Y Mfg Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-136-1085?

NSN 4820-00-136-1085 has 11 cross-referenced part numbers: 504P69 (Cummins Power Generation Inc.), 504-69 (Cummins Power Generation Inc.), 10596-LC (Mc Donald a Y Mfg Co), 13211E6742 (Cecom Lr Center), 4820001361085 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales) and 6 more.

What NSN replaces 4820-00-136-1085?

There are 12 known substitutes for 4820-00-136-1085: 5930-00-007-0572, 5310-00-045-1013, 4730-00-193-0875 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10596LC 1/2?

Key specifications for 10596LC 1/2: Material: COPPER ALLOY OVERALL; Thread Direction: RIGHT-HAND ALL ENDS; Flow Style: TWO WAY TWO PORT 360 DEGREE PLUG TURN; Valve Operation Method: MANUAL. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-136-1085 still in active supply?

NSN 4820-00-136-1085 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.
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