S-92066A123 M18 Socket Nuts

Socket Nuts

1066FA00055 Socket Nuts
1066FA00055 Socket Nuts

Image may differ from product. See technical specification for details.

Part No.
Part No. 1066FA00055
Equivalent to mcmaster :
92066A123

Basic Information

System of Measurement Metric
Nut Type Socket Head

Dimension Parameters

Height 30 mm
OD 25 mm

Thread Parameters

Thread Type Metric
Thread Size M18
Threading Partially Threaded
Thread Direction Right Hand
Thread Pitch 2.5 mm
Thread Spacing Coarse
Thread Fit Class 6H
Thread Depth 15 mm

Head Parameters

Drive Style Hex

Material & Strength Parameters

Material Alloy Steel

Installation & Application Parameters

For Hole Diameter 26.1 mm

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 SVHC) Compliant

Drive & Tool Parameters

Hex Key Size 5/8"
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
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Key Features & Benefits at a Glance

  • Superior strength and durability from premium alloy steel construction, ensuring reliable performance in demanding industrial environments
  • Precise Class 6H thread fit guarantees excellent engagement and vibration resistance, reducing the risk of loosening under load
  • 5/8" hex drive compatibility provides secure tool engagement for efficient installation and removal with standard tools
  • M18 coarse (2.5mm pitch) threads offer faster assembly and better performance in applications with debris or minor damage
  • Partially threaded design allows for controlled clamping force and precise positioning in your assembly
  • Full regulatory compliance with REACH and RoHS 3 standards, ensuring environmental responsibility and global market acceptance
  • Optimized dimensions (25mm OD, 30mm height, 15mm thread depth) provide ideal clearance and engagement for 26.1mm holes

Professional Applications & Engineering Value

This M18 metric socket head nut delivers exceptional engineering value through its alloy steel composition and Class 6H precision threads. The combination of coarse threading (2.5mm pitch) and partial threading design addresses critical industrial challenges by enabling faster installation in high-vibration environments while maintaining precise clamping control. The hex drive configuration ensures maximum torque transmission without slippage, making it ideal for machinery, heavy equipment, and automotive applications where space constraints require socket head access. The right-hand threading follows industry standards for predictable assembly, while the optimized dimensions prevent interference issues in tight-tolerance designs.

Specification Summary & Compliance

This socket nut maintains Class 6H thread fit per metric standards with M18 x 2.5mm coarse threading and 15mm thread depth. Manufacturing complies with international metric system specifications for dimensional accuracy. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across global industrial markets.

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