S-97768A188 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Precise component alignment enabled by the 3/16" shoulder length with tight tolerances, reducing assembly errors.
• Superior thread reliability due to Class 3A fit and 6-32 UNC coarse thread, ensuring secure fastening in high-vibration applications.
• Enhanced durability and wear resistance from the black oxide finish, which also provides a sleek, non-reflective surface.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, supporting heavy-duty operational loads.
• Secure and easy installation thanks to the knurled hex socket head, preventing tool slippage and speeding up assembly.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical challenges in precision machinery, automation, and assembly systems. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, extending service life in demanding conditions. The 3/16" shoulder length with minimal tolerances provides a stable pivot or spacer, minimizing misalignment in rotating parts like bearings, gears, and linkages. Combined with a Class 3A thread fit and coarse UNC thread, it ensures rapid, reliable fastening even under dynamic stresses. The black oxide finish not only enhances aesthetics but also reduces galling and friction. Ideal for use in CNC equipment, robotics, and electronic enclosures, this screw delivers consistent performance where precision and durability are paramount.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Key dimensional specifications include a shoulder diameter of 3/16" (tolerance: -0.004" to -0.002") and shoulder length of 3/8" (tolerance: -0.005" to 0.005"). Manufactured from 18-8 stainless steel with a hardness of Rockwell B55, it meets mechanical requirements of 70,000 psi tensile strength and 35,000 psi minimum shear strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety for industrial applications.