S-98451A143 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance and electrical conductivity with 360 brass construction, ideal for marine, electrical, and decorative applications.
• Precise component alignment and reduced wear thanks to the smooth, 16mm diameter shoulder with a tight tolerance of -0.025 to 0 mm.
• High-strength performance under load with a tensile strength of 40,000 psi and a Rockwell B55 hardness rating.
• Secure and reliable fastening ensured by the Class 6g thread fit and coarse M8x1.25 thread pitch for easy assembly.
• Easy installation in confined spaces using the standard hex socket head with a 5 mm drive.
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant for global market acceptance.
• Durable and long-lasting performance in demanding mechanical and industrial environments due to its robust material and precise manufacturing.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and wear issues in industrial applications. Made from 360 brass, it offers excellent corrosion resistance and is non-magnetic, making it perfect for electronics, marine hardware, and food processing equipment. The 16mm shoulder length with precise tolerances acts as a pivot or axle, ensuring accurate positioning of moving parts like gears and linkages, which reduces friction and extends component life. The hex socket head allows for high-torque installation in tight spaces, while the M8x1.25 coarse thread provides quick and secure fastening. This metric shoulder bolt delivers reliable performance in assemblies requiring exact spacing and durability, minimizing maintenance and downtime in mechanical fastening systems.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M8 thread size and 1.25 mm pitch, featuring a Class 6g thread fit for consistent performance. The shoulder diameter tolerance is -0.025 to 0 mm, and the shoulder length tolerance is 0 to 0.05 mm, ensuring precise fit in engineering applications. It is manufactured to meet RoHS 3 (2015/863/EU) compliance with exemption 6(c) for lead in copper alloy and is REACH (EC 1907/2006) compliant, supporting use in regulated industries.