S-97505A142 M8 DIN 923 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability: Crafted from alloy steel with a zinc plating finish, providing superior corrosion resistance for extended service life in demanding environments.
• Precise Alignment & Pivoting: Features a smooth, 20mm shoulder length that acts as a precise bearing surface, ensuring accurate component location and reducing wear.
• High-Strength Performance: Offers a robust 58,000 psi tensile strength and Rockwell B71 hardness, guaranteeing reliability under significant mechanical stress.
• Secure & Low-Profile Fastening: The low socket head design allows for a flush installation in tight spaces while the slotted drive provides versatile installation options.
• Guaranteed Interchangeability: Manufactured to DIN 923 standards with a Class 6g thread fit, ensuring perfect compatibility and ease of assembly in metric systems.
• Optimized for Quick Assembly: The M8x1.25 coarse thread enables faster installation compared to fine threads, improving production efficiency.
• Safe for Regulated Industries: Compliant with RoHS 3 and REACH regulations, making it suitable for use in environmentally conscious and strict manufacturing sectors.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to solve critical alignment and pivot-point challenges in industrial machinery. The alloy steel construction and precise 20mm shoulder provide a hardened, wear-resistant axle or dowel pin substitute, preventing component misalignment and fretting in assemblies like linkages, gears, and rotating fixtures. The zinc plating offers a protective barrier against rust and corrosion, which is vital for equipment operating in non-climate-controlled environments. Its low socket head and coarse thread (M8x1.25) are specifically designed for applications where space is constrained and rapid assembly is required, reducing installation time without compromising the joint integrity. This makes it an indispensable precision shoulder bolt for automation, automotive, and heavy equipment manufacturing.

Specification Summary & Compliance

This shoulder screw conforms to the dimensional and tolerance specifications of DIN 923. The metric thread is manufactured to a Class 6g tolerance for a standard fit. Key dimensional tolerances include a shoulder diameter of 10 mm with a tolerance of -0.036 mm to 0 mm and a shoulder length of 20 mm with a tolerance of +0.1 mm to +0.2 mm. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances for safe use in various industrial applications.