S-92981A755 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides reliable protection against rust and wear in demanding industrial environments.
• Precise Alignment & Reduced Wear: The 65mm shoulder length with standard fit ensures accurate component positioning, minimizing misalignment and extending part life.
• High-Strength Performance: Made from alloy steel with Rockwell C32 hardness for excellent load-bearing capacity and resistance to shear forces.
• Secure & Efficient Installation: Hex socket head with 5mm drive allows for high torque application and reliable fastening in confined spaces.
• Consistent Thread Engagement: M8x1.25 coarse thread with Class 5g6g fit guarantees reliable assembly and vibration resistance.
• Global Standard Compliance: Manufactured to ISO 7379 specifications, ensuring interchangeability and reliability in international projects.
• Environmentally Responsible Sourcing: Compliant with RoHS 3 and REACH regulations, making it suitable for use in regulated industries.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to solve critical alignment and pivot point challenges in machinery assembly. The 65mm shoulder length acts as a precise datum for rotating parts like gears, pulleys, and linkages, eliminating the need for separate spacers and reducing assembly complexity. The alloy steel construction and Rockwell C32 hardness provide the necessary strength to withstand cyclic loads and shock in automation equipment, conveyor systems, and precision instruments. The black oxide finish offers an added layer of corrosion resistance, which is vital in environments with exposure to moisture or chemicals. Combined with the hex socket drive, it ensures secure fastening in tight spaces, making it an ideal choice for high-performance industrial applications where reliability and precision are non-negotiable.

Specification Summary & Compliance

This shoulder screw features an M8x1.25 coarse metric thread with a Class 5g6g thread fit for consistent engagement. The shoulder diameter is 10 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 65 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. It is manufactured in accordance with ISO 7379 and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.