S-92981A155 M12 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black oxide finish, extending service life in demanding industrial environments
• Precise component alignment through controlled shoulder diameter tolerance (-0.072 to -0.01 mm) and standard shoulder fit
• Exceptional mechanical strength with 140,000 psi tensile strength and Rockwell C32 hardness for heavy-duty applications
• Reliable thread engagement with Class 5g6g thread fit and coarse pitch (M12x1.75) for secure fastening in vibration-prone settings
• Easy installation and maintenance with 8mm hex drive socket for standard tool compatibility and smooth head texture
• Regulatory compliance assurance meeting ISO 7379 specifications and RoHS/REACH environmental standards
• Optimized load distribution through 14mm shoulder length providing stable bearing surface for rotating components

Professional Applications & Engineering Value

This M12 shoulder screw delivers critical engineering solutions where precision alignment and rotational stability are paramount. The alloy steel construction with black oxide finish provides exceptional protection against corrosion in manufacturing environments, while the precisely machined 16mm shoulder diameter with tight tolerance control ensures accurate component positioning in assemblies. The Class 5g6g thread fit and coarse pitch threading maintain secure fastening under vibration, making these metric shoulder screws ideal for machinery, automation systems, and precision equipment where dimensional accuracy and reliability are non-negotiable. The combination of high tensile strength and controlled shoulder dimensions addresses common challenges in assembly alignment and mechanical stress distribution.

Specification Summary & Compliance

This precision shoulder screw features M12x1.75 metric thread with Class 5g6g thread fit tolerance, 18mm thread length, and 14mm shoulder length with 0 to 0.25mm tolerance. Manufactured to ISO 7379 specifications with Rockwell C32 hardness and 140,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial applications.