S-92210A405 1-72 x 3/4" 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 passivated finish for long-lasting performance in demanding environments
• Precise thread engagement with Class 3A fit and UNF fine threading ensures secure, vibration-resistant fastening in critical assemblies
• High-strength reliability with 70,000 psi tensile strength and Rockwell B55 hardness for durable, load-bearing applications
• Flush mounting capability with standard 82° countersink angle flat head design for smooth surface finishes
• Secure installation using standard 0.050" hex drive tools for consistent torque application and reduced stripping risk
• Full thread coverage along the 3/4" length provides maximum grip and load distribution
• Regulatory compliance with RoHS 3 and REACH standards ensures environmental safety and global market acceptance

Professional Applications & Engineering Value

These 1-72 UNF flat head screws deliver exceptional engineering value in precision assemblies where space constraints and surface finish requirements are critical. The combination of 18-8 stainless steel material and passivated finish provides excellent corrosion resistance in industrial environments, while the Class 3A thread fit ensures precise engagement in tapped holes, reducing the risk of cross-threading and thread damage during installation. The 82° countersink angle allows for flush mounting in precision machinery, electronic enclosures, and aerospace components where protrusions are unacceptable. The hex drive design facilitates secure installation in confined spaces, making these fully threaded screws ideal for applications requiring consistent clamping force along the entire fastener length.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNF fine threading (1-72 size). Features include 0.073" thread diameter, 3/4" fully threaded length, and standard 82° flat head profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The mechanical properties include 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance in industrial fastening applications.