S-90318A640 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance in demanding assemblies.
• Precise alignment and spacing ensured by the accurately machined shoulder with a diameter of 5/32" and length of 1/4", reducing component wear.
• Space-saving ultra-low socket head design allows for use in compact assemblies while providing secure engagement with a 3/32" hex drive.
• Consistent and reliable threading with UNC coarse threads and Class 2A fit, facilitating easier assembly and reducing cross-threading risks.
• Enhanced durability with a Rockwell B70 hardness rating, ensuring long service life and resistance to deformation under load.
• Compliance with global standards including RoHS 3 and REACH, making it suitable for use in regulated industries and international markets.

Professional Applications & Engineering Value

This 6-32 UNC shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The 316 stainless steel material provides excellent resistance to corrosion and chemicals, making it ideal for applications in marine, chemical processing, and food-grade environments where moisture and corrosive agents are present. The ultra-low hex socket head design minimizes protrusion, allowing for sleek assemblies in confined spaces such as electronic enclosures, automotive components, and precision instruments. The precise shoulder fit ensures accurate alignment of moving parts, reducing vibration and wear in pivots, linkages, and bearing supports. With a coarse thread and Class 2A fit, it offers quick installation and reliable holding power, enhancing assembly efficiency and reducing maintenance downtime in high-stress applications.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. The shoulder diameter is 5/32" with a tolerance of -0.001" to 0", and the shoulder length is 1/4" with a tolerance of 0" to 0.002", ensuring precise component alignment. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for use in environmentally sensitive and regulated industries without hazardous substances.