S-92981A767 M2 ASTM A108 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides reliable protection against rust and wear in harsh industrial environments.
• Precise Alignment & Reduced Wear: 3mm shoulder diameter with tight tolerance (-0.072 to -0.01 mm) ensures accurate component positioning and minimizes vibration-related damage.
• High Tensile Strength for Demanding Applications: 140,000 psi tensile strength and Rockwell C32 hardness offer exceptional load-bearing capacity and resistance to deformation.
• Secure & Efficient Installation: Hex socket drive (1.5 mm) with knurled head allows for reliable torque application and easy handling, even in confined spaces.
• Consistent Thread Performance: Class 5g6g metric coarse thread (M2x0.4) ensures reliable fastening and compatibility with standard mating components.
• Compliance with Industry Standards: Meets ASTM A108 material specifications and is RoHS 3/REACH compliant for safe, regulated use in various sectors.
• Versatile Right-Hand Thread Design: Standard right-hand thread direction facilitates straightforward installation and removal in automated or manual assembly processes.

Professional Applications & Engineering Value

This M2x0.4 shoulder screw is engineered to address critical alignment and strength challenges in precision assemblies. The alloy steel construction, combined with a black oxide finish, ensures longevity in environments exposed to moisture and mechanical stress. The precisely machined 3mm shoulder diameter acts as a reliable pivot or spacer, reducing wear on moving parts in machinery, electronics, and automotive systems. With a Class 5g6g thread fit and coarse pitch, it provides secure fastening while resisting loosening under vibration. Ideal for industrial applications like robotics, conveyor systems, and precision instruments, this screw delivers consistent performance where dimensional accuracy and high tensile strength are non-negotiable.

Specification Summary & Compliance

This shoulder screw adheres to metric system dimensions with a Class 5g6g thread fit for precise tolerance control. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring reliable interchangeability. Manufactured in compliance with ASTM A108 standards, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing suitability for global industrial and electronic applications.