S-97345A394 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 extended service life.
• Precise alignment and component spacing ensured by the consistent 1/4" shoulder diameter, reducing assembly errors and improving machinery reliability.
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, providing reliable fastening under heavy loads and vibration.
• Secure, non-slip installation facilitated by the knurled socket head and hex drive, allowing for high-torque application without tool slippage.
• Fine thread accuracy with Class 3A UNF thread fit, ensuring tight, secure connections and minimizing the risk of loosening in precision assemblies.
• Excellent durability from Rockwell B79 hardness, offering wear resistance and maintaining thread integrity through repeated use.
• Regulatory compliance and safety meeting ASME B18.3, RoHS 3, and REACH standards, ensuring suitability for global industrial and electronic applications.

Professional Applications & Engineering Value

This 10-32 UNF shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 316 stainless steel material provides exceptional resistance to corrosion from chemicals, moisture, and salt, making it ideal for machinery in marine, chemical processing, and food industries. The socket head with knurled texture and hex drive design ensures secure tool engagement, preventing damage during high-torque installations. With a Class 3A thread fit and fine thread spacing, it delivers precise, vibration-resistant fastening for components like bearings, gears, and linkages, reducing maintenance needs and enhancing operational reliability in automated systems and precision equipment.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF fine thread with Class 3A fit for high precision, a shoulder diameter of 1/4" with tight tolerances (-0.004" to -0.002"), and a shoulder length of 3/16" (±0.005"). Manufactured to ASME B18.3 specifications, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations without hazardous substances.