S-97345A700 3/8"-16 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.
• Enhanced assembly precision with Class 3A thread fit, ensuring tight tolerances and reliable, vibration-resistant connections.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Secure and easy installation with a 1/4" hex socket drive and knurled head for improved grip and torque application.
• Durable shoulder design with a precise 1/2" diameter and length, providing stable bearing surfaces and accurate component alignment.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
• Optimized for coarse UNC threads (3/8"-16) for quick assembly and reduced cross-threading risks in high-volume operations.

Professional Applications & Engineering Value

This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in precision machinery, automation systems, and assembly fixtures. Its UNC coarse thread with Class 3A fit minimizes the risk of thread stripping and ensures consistent clamping force, even under dynamic loads. The 1/2" shoulder diameter and precise length tolerance provide a reliable pivot or spacer, reducing wear on mating parts and maintaining alignment in rotating assemblies. Made from corrosion-resistant 316 stainless steel, it excels in environments exposed to moisture, chemicals, or extreme temperatures, offering long-term reliability. The socket head with knurled texture allows for efficient installation in confined spaces, making it a top choice for industrial shoulder screws in robotics, conveyor systems, and precision tooling where durability and compliance are non-negotiable.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high precision, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications for dimensional consistency and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. The UNC 3/8"-16 coarse thread and standard shoulder fit support reliable performance in regulated industrial applications.