S-93856A412 M20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• Precise alignment and secure positioning enabled by the precision-ground shoulder with a tight diameter tolerance of -0.072 to -0.01 mm.
• High mechanical strength and durability with a tensile strength of 70,000 psi and Rockwell B55 hardness for demanding applications.
• Customizable fit for various assembly needs thanks to the adjustable shoulder length ranging from 13 mm to 49.75 mm.
• Secure, non-slip fastening provided by the knurled socket head and 12 mm hex drive, allowing for high torque application.
• Reliable thread engagement ensured by the M20x2.5 coarse thread with Class 5g6g fit, facilitating quick and easy assembly.
• Compliance with environmental and safety standards, being RoHS 3 and REACH compliant for use in regulated industries.

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical alignment and pivot point requirements in industrial applications. The 18-8 Stainless Steel material offers excellent resistance to rust and corrosion, making it suitable for machinery, automotive assemblies, and equipment exposed to moisture or chemicals. The precision shoulder with its tight diameter tolerance ensures components are accurately located and remain securely in place, reducing wear and misalignment. The knurled socket head with a 12mm hex drive allows for high-torque installation without slippage, enhancing assembly efficiency. Its coarse thread (M20x2.5) and Class 5g6g thread fit provide reliable fastening in dynamic environments, minimizing the risk of loosening under vibration. This screw is a dependable choice for engineers seeking durability, precision, and compliance in precision shoulder screw applications.

Specification Summary & Compliance

This metric shoulder screw adheres to precise dimensional standards, including a Class 5g6g thread fit for consistent engagement. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is -0.05 to 0.05 mm, ensuring high accuracy. Manufactured from 18-8 Stainless Steel with a Rockwell B55 hardness and tensile strength of 70,000 psi, it meets robust performance criteria. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and suitable for global industrial use.