S-99154A421 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing replacement frequency.
• Enhanced assembly precision due to the Class 2A thread fit and precise shoulder fit, ensuring consistent alignment and reduced part wear.
• High strength and durability with a 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under load.
• Space-saving low profile socket head allows for installation in tight spaces while providing a secure slotted drive.
• Accurate and reliable shoulder dimensions with tight tolerances on diameter and length for precise component location and rotation.
• Broad industrial compatibility with UNC coarse threads and right-hand thread direction, suitable for standard machinery and equipment.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safety and sustainability in global supply chains.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address common industrial challenges such as misalignment and corrosion-induced failure. The 18-8 Stainless Steel material offers excellent resistance to rust and chemicals, making it suitable for applications in automotive, electronics, and machinery where exposure to moisture or chemicals is a concern. The low profile socket head design, combined with a slotted drive, facilitates easy installation in confined spaces while maintaining a secure hold. The precise 3/16" shoulder diameter and 5/16" shoulder length with tight tolerances ensure accurate positioning of moving parts, reducing wear and improving the longevity of assemblies. This screw is ideal for pivots, guides, and spacers in precision equipment, providing reliable performance and reducing maintenance downtime.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. The shoulder features precise tolerances: diameter of 3/16" (-0.001" to 0") and length of 5/16" (0" to 0.002"). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries.