S-93791A475 8-32 x 1/2" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black-oxide passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term fastening
• Precise Class 3A thread fit ensuring secure engagement and vibration resistance in demanding applications
• Fully threaded design providing maximum grip and load distribution along the entire 1/2" length
• Optimized 82° countersink angle allowing flush mounting to prevent snagging and improve aesthetics
• Convenient 3/32" hex drive enabling quick installation and high torque application without cam-out
• Full regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical engineering advantages in industrial fastening applications where reliability and corrosion resistance are paramount. The combination of 18-8 stainless steel material and black-oxide passivated finish creates a durable barrier against oxidation and chemical exposure, significantly extending service life in challenging environments. The Class 3A thread fit provides superior engagement precision, reducing the risk of loosening under vibration while maintaining consistent clamping force. The fully threaded design ensures maximum contact surface area, distributing stress evenly across the entire fastener length. These characteristics make these hex drive screws ideal for machinery assembly, electronic enclosures, automotive components, and other applications requiring ASME B18.3 compliance and environmental resistance.

Specification Summary & Compliance

This flat head screw features precision 8-32 UNC coarse threads with Class 3A fit for superior thread engagement. Manufacturing conforms to ASME B18.3 specifications ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming adherence to restricted substance requirements. Additional specifications include 82° countersink angle, 3/32" hex drive, and 1/2" fully threaded length.