S-8077A126 3/4"-10 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress loads.
• Precision alignment and reduced wear ensured by the Class 3A thread fit and standard shoulder fit, minimizing backlash in assemblies.
• Enhanced grip and easy installation with a knurled head and 1/2" hex drive, allowing for secure tool engagement and torque application.
• Durable, wear-resistant surface thanks to the black oxide finish, which provides added protection against abrasion and galling.
• Broad compatibility and interchangeability with UNC coarse threads and compliance to ASME B18.3 standards, ensuring seamless integration.
• Safe for regulated industries as it meets RoHS 3 and REACH compliance, supporting environmental and health safety standards.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with a black oxide finish is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. The Class 3A thread fit and precise shoulder diameter of 1" provide exact positioning in machinery, reducing vibration and wear in high-precision applications like robotics, conveyor systems, and automotive assemblies. Its coarse UNC thread and 7 1/2" shoulder length allow for quick installation and stable support in heavy-duty fixtures. The combination of high tensile and shear strength ensures longevity in dynamic loads, making it a reliable choice for engineers seeking durability and compliance with ASME B18.3 standards in demanding environments.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit with UNC coarse threads (3/4"-10) and precise tolerances, including a shoulder diameter of 1" (tolerance: -0.004" to -0.002") and shoulder length of 7 1/2" (tolerance: -0.005" to 0.005"). It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets industry standards for safety and environmental responsibility.