S-97345A435 8-32 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
• Enhanced durability and load-bearing capacity from 70,000 psi tensile strength and 35,000 psi shear strength
• Precise alignment and smooth rotation ensured by Class 3A thread fit and standard shoulder fit for reduced assembly play
• Secure, non-slip installation with knurled head and hex socket drive for reliable torque application
• Broad compatibility with 8-32 UNC coarse threads and 2" shoulder length fitting standard industrial components
• Regulatory compliance and safety meeting ASME B18.3 specifications, RoHS 3, and REACH environmental standards
• Consistent performance backed by tight tolerances on shoulder diameter and length for repeatable precision in assemblies

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw delivers exceptional value in demanding industrial settings where corrosion resistance and mechanical strength are critical. The Class 3A thread fit and UNC coarse threads provide reliable engagement in metals and plastics, reducing cross-threading risks during high-volume assembly. Its 2" precision shoulder acts as a stable axle or pivot in machinery, ensuring accurate alignment of moving parts like gears, bearings, and linkages. The knurled head and hex drive facilitate secure handling in oily or gloved conditions, while the high tensile and shear strength withstands dynamic loads in automation, automotive, and marine applications. Engineered to ASME B18.3, it offers a trusted solution for OEMs and maintenance teams seeking longevity under stress and exposure.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for precise engagement, with UNC coarse threads (8-32 size) and right-hand direction. Manufacturing follows ASME B18.3 specifications, ensuring dimensional accuracy for shoulder diameter (1/4" with -0.004" to -0.002" tolerance) and length (2" with -0.005" to 0.005" tolerance). The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting sustainable and safe industrial practices.