S-8077A132 3/4"-10 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
• High load-bearing capacity featuring 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
• Precise alignment and reduced wear due to Class 3A thread fit and standard shoulder fit, ensuring reliable performance.
• Easy installation and removal with 1/2" hex drive and knurled head texture for enhanced grip and torque application.
• Durable and long-lasting with Rockwell B79 hardness, providing excellent resistance to deformation under stress.
• Broad compatibility with UNC coarse threads and ASME B18.3 standards, suitable for various machinery and equipment.
• Environmentally compliant design meeting RoHS 3 and REACH regulations, ensuring safe and sustainable use.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with black oxide finish is engineered to address critical challenges in industrial settings, such as corrosion in humid or chemical-exposed environments. The UNC coarse thread and Class 3A thread fit provide secure fastening with minimal risk of loosening, while the precise shoulder diameter and length (1" and 3 1/4" respectively) ensure accurate component alignment in assemblies like rotating shafts, pivots, and machinery guides. Its high tensile and shear strength makes it ideal for heavy-duty applications, reducing maintenance needs and downtime. The socket head with hex drive and knurled texture allows for efficient installation in tight spaces, enhancing productivity in automotive, aerospace, and manufacturing sectors.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with Class 3A thread fit for precise tolerance and UNC coarse threading (3/4"-10). Dimensions include a shoulder diameter of 1" (tolerance: -0.004" to -0.002") and shoulder length of 3 1/4" (tolerance: -0.005" to 0.005"), ensuring consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, supporting environmentally responsible industrial practices.