S-97345A754 1/2"-13 ASME B18.3 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance in high-stress assemblies.
- Precise Class 3A thread fit ensures tight tolerances and secure fastening, reducing the risk of loosening under vibration.
- Convenient installation and removal via the 5/16" hex socket drive and knurled head, providing excellent grip and torque application.
- Accurate shoulder positioning with a 1" shoulder length and controlled diameter, enabling precise component alignment and spacing.
- Compliance with major standards including ASME B18.3, RoHS 3, and REACH, ensuring product safety and regulatory acceptance.
- Durable coarse UNC threads resist stripping and allow for quick assembly in demanding right-hand thread applications.
Professional Applications & Engineering Value
This 316 Stainless Steel shoulder screw is engineered to address critical challenges in machinery, automation, and structural assemblies. Its high tensile strength and Class 3A thread fit provide reliable clamping force and vibration resistance, essential for dynamic loads. The 1" shoulder length and 5/8" shoulder diameter offer precise bearing surfaces for rotating parts or spacers, reducing wear and misalignment. The coarse 1/2"-13 UNC thread facilitates rapid installation in tough materials, while the knurled socket head enhances tool engagement. Ideal for industrial fasteners in corrosive settings, it ensures long-term durability and minimal maintenance.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for high precision. Dimensions include a 1/2"-13 UNC coarse thread, 3/4" thread length, 1" shoulder length (±0.005" tolerance), and 5/8" shoulder diameter (-0.004" to -0.002" tolerance). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental and safety standards in industrial applications.
