S-92981A790 M5 ASTM A108 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Durability & Strength: Crafted from alloy steel with a Rockwell C32 hardness and 140,000 psi tensile strength for reliable performance in high-stress applications.
• Superior Corrosion Resistance: The black oxide finish provides a protective layer, significantly enhancing the screw's longevity and resistance to rust in demanding industrial environments.
li>Precision Alignment & Reduced Wear: The integral 30mm shoulder with a 6.5mm diameter ensures precise component location, minimizing misalignment and wear on mating parts.
• Secure & Easy Installation: The knurled socket head with a 3 mm hex drive offers a secure grip for high-torque installation and removal, preventing tool slippage.
• Reliable Thread Engagement: Features a Class 5g6g thread fit on the M5x0.8 coarse thread, ensuring consistent, secure fastening and vibration resistance.
• Broad Industry Compliance: Manufactured to meet ASTM A108 specifications and is RoHS 3 and REACH compliant, ensuring material quality and environmental safety.
• Optimized for Metric Systems: As a fully metric shoulder screw, it seamlessly integrates into machinery and assemblies designed to metric standards.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to solve critical challenges in precision assembly and motion control systems. The alloy steel construction and black oxide finish directly address the need for components that can withstand high mechanical loads and resist corrosion in harsh operating conditions. The 30mm shoulder length acts as a precise pivot or axle, eliminating the need for and cost of additional bushings or spacers. This is vital in applications like robotics, conveyor systems, and fixturing, where exact component positioning is paramount to prevent premature wear and ensure operational accuracy. The combination of a knurled socket head and hex drive allows for secure, high-torque fastening in confined spaces, making it an indispensable industrial shoulder screw for maintenance and production lines.

Specification Summary & Compliance

This precision metric shoulder screw adheres to strict dimensional tolerances, including a shoulder diameter tolerance of -0.072 to -0.01 mm and a shoulder length tolerance of 0 to 0.25 mm. The M5x0.8 coarse thread conforms to a Class 5g6g fit per standard metric practice. Manufacturing and material quality are verified by compliance with ASTM A108. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent international standards for hazardous substance restrictions.