S-92210A017 1-72 x 3/16" 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 extended service life in harsh environments
• Precise thread engagement with Class 3A fit and UNF fine threads ensuring reliable, vibration-resistant connections
• High tensile strength rated at 70,000 psi for dependable performance in demanding mechanical applications
• Optimized flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
• Secure installation facilitated by hex drive design providing positive torque transmission and reduced cam-out risk
• Consistent hardness at Rockwell B55 maintaining structural integrity through repeated assembly cycles
• Regulatory compliance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 1-72 UNF flat head screws deliver critical performance advantages in precision assemblies where space constraints and corrosion resistance are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for electronics enclosures, instrumentation, and aerospace components. The Class 3A thread fit with fine thread spacing ensures minimal backlash and superior vibration resistance compared to coarse-thread alternatives. The hex drive style allows for higher torque application in confined spaces, while the standardized 82° countersink angle guarantees proper seating in machined surfaces. These engineering features collectively address common failure points in precision mechanical systems, providing reliable fastening solutions for OEMs and maintenance applications.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 standards with Class 3A thread fit tolerances for precision applications. The UNF thread form with right-hand direction and fully threaded design ensures consistent engagement. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming restriction of hazardous substances. Mechanical properties include Rockwell B55 hardness and 70,000 psi tensile strength for reliable performance in industrial settings.