S-8077A567 1/2"-13 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, providing long-lasting performance and reduced maintenance
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications
• Precise alignment and secure positioning thanks to the 3/4" shoulder diameter and Class 3A thread fit, minimizing play and vibration
• Easy installation and removal with a knurled socket head and 3/8" hex drive, allowing for high-torque application without slippage
• Reliable performance in coarse-thread applications using 1/2"-13 UNC right-hand threads for quick assembly and strong holding power
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical stress. The black oxide finish not only enhances corrosion resistance but also reduces friction, making it ideal for high-wear applications in machinery, automotive assemblies, and precision equipment. The coarse UNC threads and Class 3A thread fit ensure secure fastening in materials where fine threads might strip, while the knurled socket head with hex drive allows for efficient installation in confined spaces. Its robust 70,000 psi tensile strength and 35,000 psi shear strength provide reliable performance in heavy-duty applications, reducing downtime and maintenance costs. Commonly used in pivots, rotating shafts, and jigs, this shoulder screw offers precise shoulder length and diameter tolerances for consistent alignment and longevity.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC coarse thread with Class 3A thread fit for precise engagement and reduced backlash. The shoulder diameter is 3/4" with a tolerance of -0.004" to -0.002", and the shoulder length is 3/4" with a tolerance of -0.005" to 0.005", ensuring accurate fits in assemblies. Manufactured to ASME B18.3 specifications, it guarantees dimensional consistency and reliability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety standards for global industrial use.