S-97345A436 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.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress conditions.
• Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash, enhancing assembly accuracy.
• Enhanced grip and torque application from the knurled socket head and hex drive, reducing slippage during installation.
• Fine 10-32 UNF threads provide superior vibration resistance and improved load distribution in precision assemblies.
• Durable Rockwell B79 hardness maintains thread integrity and wear resistance over repeated use.
• Compliance with ASME B18.3 and environmental regulations guarantees quality, safety, and suitability for regulated industries.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation, and industrial applications requiring corrosion resistance and dimensional stability. The 10-32 UNF fine thread and Class 3A fit minimize play in assemblies, reducing wear and maintaining alignment in high-vibration environments like robotics and conveyor systems. The knurled socket head with a hex drive allows for efficient torque transmission, preventing tool slip and ensuring consistent clamping force. Its shoulder design provides a precise pivot or spacer, ideal for securing bearings, gears, and linkages while withstanding 70,000 psi tensile strength demands. This combination of material durability and thread precision makes it a reliable choice for OEMs and maintenance teams in sectors from aerospace to food processing, where reliability and compliance are paramount.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit tolerances for high precision, with a shoulder diameter of 1/4" (tolerance: -0.004" to -0.002") and length of 5/16" (tolerance: -0.005" to 0.005"). It conforms to ASME B18.3 standards for dimensional consistency and is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and material integrity.