S-97345A536 1/4"-20 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
• High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding load applications
• Precise Class 3A thread fit ensures secure, vibration-resistant connections with minimal backlash
• Knurled socket head design provides enhanced grip during installation, reducing tool slippage
• Standardized shoulder dimensions maintain consistent alignment for rotating components and pivoting mechanisms
• Compliance with ASME B18.3 guarantees interchangeability and reliable performance in industrial assemblies
• RoHS 3 and REACH compliant meeting environmental regulations for global manufacturing requirements

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw with 1/4"-20 UNC coarse threads and Class 3A precision fit addresses critical challenges in machinery design, including component misalignment, corrosion-induced failure, and assembly inefficiency. The knurled socket head combined with a 5/32" hex drive enables secure torque application in confined spaces, while the precisely machined shoulder provides stable bearing surfaces for rotating parts in conveyor systems, robotic arms, and precision instruments. Engineered to withstand aggressive environments from marine to chemical processing, it eliminates galvanic corrosion concerns and maintains 70,000 psi tensile strength under continuous operational stress, reducing maintenance frequency and downtime in industrial fastener applications.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for superior dimensional accuracy. Features include: 1/4"-20 UNC coarse threads, 7/16" shoulder length (±0.005" tolerance), and 5/16" shoulder diameter (-0.004" to -0.002" tolerance). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use in regulated industries.