S-93996A721 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent nylon patch thread locker prevents loosening under dynamic loads, maintaining assembly integrity in temperatures from -70° to 250°F.
• Superior corrosion resistance from 18-8 stainless steel construction ensures long-term reliability in harsh or humid industrial environments.
• Precise component alignment enabled by the smooth, 3/16" diameter shoulder with tight tolerance fit, reducing wear and ensuring accurate part positioning.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness withstands heavy mechanical stress without failure.
• Secure, high-torque installation using the 3/32" hex socket drive, allowing for easy tightening in confined spaces without stripping.
• Consistent thread engagement guaranteed by Class 2A UNC coarse threads, facilitating quick assembly and reducing cross-threading risks.
• Regulatory peace of mind with full compliance to RoHS 3 and REACH standards, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and vibration challenges in precision assemblies. The 18-8 stainless steel material offers excellent resistance to oxidation and chemical exposure, making it ideal for machinery, automotive, and electronic enclosures operating in demanding conditions. The integrated nylon patch thread locker provides a permanent locking force that eliminates the need for separate washers or adhesives, reducing assembly time and parts count. With its 3/16" shoulder diameter and 7/16" shoulder length manufactured to precise tolerances, this screw ensures minimal radial play, which is crucial for pivoting mechanisms, rotating shafts, and bearing retention. The socket head with hex drive allows for high torque application in space-constrained designs, enhancing reliability in automated equipment and precision instruments.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent engagement. The shoulder features a diameter of 3/16" (tolerance: -0.001" to 0") and length of 7/16" (tolerance: 0" to 0.002") for precise component fit. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial use.