S-92981A945 M1.6 ASTM A108 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced durability and strength from alloy steel construction with Rockwell C32 hardness, ensuring long-term reliability in demanding applications.
• Superior corrosion resistance provided by the black oxide finish, extending service life in harsh industrial environments.
• Secure and efficient installation with a hex socket drive (1.5 mm), allowing for high torque application without slippage.
• Precise thread engagement due to Class 5g6g thread fit, minimizing the risk of cross-threading and ensuring consistent fastening performance.
• Accurate alignment and spacing with a smooth shoulder (2 mm diameter, 10 mm length), ideal for pivot points and rotating components.
• Broad compatibility with coarse metric threading (M1.6x0.35mm), facilitating easy integration into standard metric assemblies.
• Compliance with industry standards including ASTM A108, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This M1.6 shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining alignment in rotating mechanisms and reducing wear in pivot applications. Made from alloy steel and finished with black oxide, it offers excellent resistance to corrosion and abrasion, which is vital for longevity in machinery and electronic devices. The hex socket drive ensures secure, high-torque installation without damaging the head, while the Class 5g6g thread fit provides reliable fastening with minimal backlash. Ideal for use in robotics, automotive components, and precision instruments, this screw enhances assembly integrity by combining metric thread accuracy with robust material properties, effectively solving issues of misalignment and fastener failure in compact, high-stress environments.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a thread size of M1.6 with a 0.35 mm pitch and coarse spacing, ensuring compatibility with standard metric systems. The shoulder diameter is 2 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 10 mm with a tolerance of 0 to 0.25 mm, providing tight control for engineering applications. Thread fit adheres to Class 5g6g for consistent performance. It meets ASTM A108 specifications for material quality and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global markets.