S-92196A918 1"-8 x 3 1/2" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 Stainless Steel, ideal for harsh environments and reducing long-term maintenance costs.
• Superior tensile strength of 70,000 psi ensures reliable performance under high-stress conditions, preventing fastener failure.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in critical applications.
• Robust Rockwell B70 hardness offers excellent wear resistance, extending the screw's service life.
• 3/4" hex drive and standard socket head allow for high-torque installation with common tools, improving assembly efficiency.
• Coarse UNC thread enables faster installation and better performance in softer materials or where debris is present.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees consistent quality and material safety for regulated industries.

Professional Applications & Engineering Value

This Socket Head Cap Screw is engineered to address common industrial challenges such as joint failure under dynamic loads and corrosion in demanding environments. The 18-8 Stainless Steel construction provides inherent resistance to rust and chemical exposure, making it suitable for machinery, marine equipment, and food processing applications. The UNC coarse thread and Class 3A fit ensure a secure, vibration-resistant connection that maintains integrity in heavy-duty assemblies. With a partially threaded design, it offers optimal clamping force where needed, reducing stress concentration. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures durability in high-stress applications, providing long-term reliability and reducing downtime for maintenance.

Specification Summary & Compliance

This screw features a 1"-8 UNC coarse thread with a Class 3A thread fit for precision and strength. Dimensions include a 3-1/2" length, 1-1/2" head diameter, and 2-1/2" minimum thread length. It is manufactured in compliance with ASME B18.3 standards, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.