PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-V-20064E TY 3 CL 6 SIZE 1/2Valve,angle

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4820-00-287-2581 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-287-2581 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-287-2581. Primary manufacturer part number: MIL-V-20064E TY 3 CL 6 SIZE 1/2.
Features
  • Valve,angle — FSC 4820
  • Material Document and Classification: QQ-B-626,ALLOY 377 FED SPEC SINGLE MATERIAL RESPONSE BODY
  • Material: NICKEL ALLOY 400 SEAT
  • Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS
  • Material Document and Classification: MIL-N-894-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE SEAT
  • Style Designator: ANGLE
  • Material Document and Classification: MIL-N-894-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE STEM
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES ALL ENDS IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy 400 Seat construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-287-2581, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-287-2581
Primary Part NumberMIL-V-20064E TY 3 CL 6 SIZE 1/2
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Material Document and ClassificationQQ-B-626,ALLOY 377 FED SPEC SINGLE MATERIAL RESPONSE BODY
MaterialNICKEL ALLOY 400 SEAT
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDS
Material Document and ClassificationMIL-N-894-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE SEAT
Style DesignatorANGLE
Material Document and ClassificationMIL-N-894-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE STEM
Nominal Outside Diameter Tube Accommodated0.500 INCHES ALL ENDS IN
MaterialNICKEL ALLOY 400 STEM
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Bonnet Attachment MethodTHREADED
Bonnet TypeINSIDE SCREW
Nondefinitive Spec/std Data3 TYPE AND 6 CLASS
Media for Which DesignedREFRIGERANT 22 SECOND RESPONSE
Flow Control DeviceDISK
MaterialCOPPER ALLOY 377 BODY
Renewable Seat Ring TypeTHREADED
Media for Which DesignedREFRIGERANT 12 FIRST RESPONSE
Valve Operation MethodMANUAL
Connection StyleSOCKET (TUBE) ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-120-3106142929H INTERCHANGEABLE
Bearing,roller,needle
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
9540-00-145-5771 INTERCHANGEABLE
Angle,structural
5950-00-763-60516494 INTERCHANGEABLE
Transformer,power Autotransforme
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
9540-01-071-4699 INTERCHANGEABLE
Angle,structural
9540-01-071-4728 INTERCHANGEABLE
Angle,structural
6515-01-387-88466494 INTERCHANGEABLE
Support,arch
Alimed, Inc. Dba Alimed Inc
6515-01-560-9958401151 INTERCHANGEABLE
Manual,operator,compact Disc
Welch Allyn, Inc.
Cross-Reference Index
Part NumberManufacturer
MIL-V-20064E TY 3 CL 6 SIZE 1/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
HL12558REVCSH2 Johnson Controls Navy Systems, Llc (USA)
MILV20064 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6494 Henry Technologies, Inc. (USA)
M20064 TYIII CL6 SIZE 1/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-20064 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3110-00-120-3106INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
142929H
9540-00-145-5771INTERCHANGEABLE
ANGLE,STRUCTURAL
5950-00-763-6051INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
6494
9540-01-071-4699INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-01-071-4728INTERCHANGEABLE
ANGLE,STRUCTURAL
6515-01-387-8846INTERCHANGEABLE
SUPPORT,ARCH
6494
6515-01-560-9958INTERCHANGEABLE
MANUAL,OPERATOR,COMPACT DISC
401151

Frequently Asked Questions

What is NSN 4820-00-287-2581?

NSN 4820-00-287-2581 is a Valve,angle, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-287-2581?

NSN 4820-00-287-2581 has 6 cross-referenced part numbers: MIL-V-20064E TY 3 CL 6 SIZE 1/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), HL12558REVCSH2 (Johnson Controls Navy Systems, Llc), MILV20064 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 6494 (Henry Technologies, Inc.), M20064 TYIII CL6 SIZE 1/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4820-00-287-2581?

There are 7 known substitutes for 4820-00-287-2581: 3110-00-120-3106, 9540-00-145-5771, 5950-00-763-6051 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-V-20064E TY 3 CL 6 SIZE 1/2?

Key specifications for MIL-V-20064E TY 3 CL 6 SIZE 1/2: Material Document and Classification: QQ-B-626,ALLOY 377 FED SPEC SINGLE MATERIAL RESPONSE BODY; Material: NICKEL ALLOY 400 SEAT; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Material Document and Classification: MIL-N-894-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE SEAT. 19 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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