S-8077A138 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.
• Enhanced durability and wear resistance from the black oxide finish, which also provides a sleek, non-reflective surface.
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable operation under heavy loads.
• Precise, secure assembly thanks to the Class 3A thread fit, offering tighter tolerances for vibration-resistant connections.
• Easy installation and removal with the 1/2" hex drive and knurled head, providing excellent grip and torque application.
• Versatile shoulder design featuring a 1" diameter and 5/8" length for accurate component alignment and spacing.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial applications where precision, strength, and corrosion resistance are paramount. The black oxide finish not only enhances its aesthetic appeal but also significantly boosts its resistance to rust and wear, making it suitable for machinery, automotive assemblies, and marine equipment. The UNC coarse thread and Class 3A thread fit ensure a secure, vibration-resistant connection, reducing the risk of loosening in high-stress environments. With a knurled head and 1/2" hex drive, it allows for easy handling and high-torque installation, streamlining maintenance and assembly processes. Its robust shoulder design provides precise alignment for rotating parts, bearings, and linkages, minimizing misalignment and extending component life in demanding engineering setups.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high precision, with a 3/4"-10 UNC coarse thread and right-hand direction. It meets ASME B18.3 specifications for dimensional accuracy, including shoulder diameter (1" with tolerance -0.004" to -0.002") and length (5/8" with tolerance -0.005" to 0.005"). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial uses.