S-8077A213 5-40 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Enhanced durability and wear resistance from the black oxide finish, which also reduces light reflection.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable performance under heavy loads.
• Precise alignment and smooth rotation ensured by the Class 3A thread fit and standard shoulder for reduced assembly play.
• Secure, non-slip installation with the knurled socket head and 3/32" hex drive, allowing for high torque application.
• Quick assembly in coarse-threaded applications thanks to the 5-40 UNC right-hand thread design.
• Compliance with environmental and safety standards, being RoHS 3 and REACH compliant for global supply chain use.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical needs in precision machinery, where components must withstand corrosive agents and mechanical stress. The black oxide finish not only enhances corrosion resistance but also minimizes galling during installation. With its UNC coarse threading and Class 3A fit, it ensures rapid, secure fastening in assemblies requiring minimal backlash, such as in pivoting mechanisms, bearing mounts, and automation equipment. The knurled socket head and robust hex drive allow for high-torque tightening without stripping, making it a reliable choice for maintenance-intensive industrial environments. Its high tensile and shear strength provides a safety margin in dynamic applications, reducing the risk of fastener failure and downtime.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement. Dimensional tolerances include a shoulder diameter of 5/32" (tolerance: -0.004" to -0.002") and shoulder length of 3/8" (tolerance: -0.005" to 0.005"). It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for use in regulated industries.