S-91273A693 5/8"-11 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• Enhanced wear resistance and reduced light glare thanks to the durable Black Oxide finish.
• Secure, non-slip installation provided by the knurled head and hex drive socket, preventing tool slippage.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications.
• Precise component alignment and smooth rotation enabled by the 2" shoulder with tight diameter tolerance.
• Reliable and quick assembly with a coarse 5/8"-11 UNC thread and Class 2A fit for consistent engagement.
• Compliance with global environmental standards, being RoHS 3 and REACH compliant for responsible sourcing.

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in machinery assembly and precision equipment. The 2" shoulder length with minimal tolerances ensures exact alignment of moving parts, reducing wear and preventing misalignment in pivots, gears, and linkages. The coarse UNC thread and Class 2A fit provide robust, vibration-resistant fastening, essential for high-stress environments. Combined with a Rockwell B55 hardness and black oxide finish, it offers excellent durability against corrosion and abrasion, making it a reliable choice for automotive, aerospace, and industrial machinery applications where long-term performance is non-negotiable.

Specification Summary & Compliance

This shoulder screw features a 5/8"-11 UNC coarse thread with a Class 2A thread fit for standard precision. The shoulder diameter tolerance is -0.004" to -0.002", and the shoulder length tolerance is -0.005" to 0.005", ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.