S-97345A503 10-32 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.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing applications.
• Precise assembly and alignment ensured by the Class 3A thread fit and standard shoulder fit, reducing play and improving component stability.
• Enhanced grip and tool engagement from the knurled head and 1/8" hex drive, allowing for secure installation and reduced slippage.
• Long-term durability supported by Rockwell B79 hardness, resisting wear and deformation under repeated use.
• Regulatory compliance and safety with RoHS 3 and REACH adherence, meeting strict environmental and health standards for global supply chains.
• Broad compatibility with ASME B18.3 specifications and UNF fine threads, ensuring interchangeability and ease of integration in existing systems.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and corrosion-induced failure. The 10-32 UNF fine thread with Class 3A fit provides tight tolerances, minimizing vibration and ensuring secure fastening in dynamic assemblies like rotating shafts and bearing mounts. The knurled socket head enhances torque application, reducing installation errors in confined spaces. With a 1-7/8" shoulder length, it supports accurate component positioning in automation equipment, medical devices, and marine applications, where corrosion resistance and high tensile strength are paramount for longevity and reduced maintenance.

Specification Summary & Compliance

The screw maintains precise dimensions, including a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005", ensuring consistent performance. It adheres to ASME B18.3 standards for shoulder screws and features a Class 3A thread fit per UNF specifications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms its suitability for environmentally regulated industries, supporting safe and sustainable operations.