S-93856A253 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing maintenance costs.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under high-stress conditions.
• Precise thread engagement with Class 5g6g fit ensuring consistent, vibration-resistant connections in assemblies.
• Secure and easy installation provided by the 4mm hex drive and knurled 13mm head, preventing tool slippage and speeding up assembly.
• Accurate positioning and alignment due to the precisely toleranced shoulder diameter and length, minimizing part movement.
• Broad compatibility with coarse M8x1.25 metric threads, fitting standard industrial components and reducing sourcing complexity.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical challenges in industrial applications such as machinery assembly, automation systems, and precision instruments. The 18-8 stainless steel material provides excellent corrosion resistance, which is vital for operations in moist or chemically aggressive environments, thereby extending component life and reducing downtime. The knurled socket head combined with a 4mm hex drive ensures a secure grip during installation, preventing cam-out and damage to the fastener, which is crucial for maintenance efficiency. The Class 5g6g thread fit and coarse M8x1.25 thread offer reliable, vibration-resistant fastening, making it ideal for applications where precision shoulder screws are needed to maintain alignment in rotating parts or linkages, ultimately enhancing overall system reliability and performance.

Specification Summary & Compliance

This metric shoulder screw features an M8x1.25 coarse thread with Class 5g6g thread fit for precise dimensional accuracy. Shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is -0.05 to 0.05 mm, ensuring consistent performance. Manufactured from 18-8 stainless steel with a hardness of Rockwell B55, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.