S-92210A448 1/2"-13 x 8" 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, ideal for harsh industrial environments
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Precise thread engagement with Class 3A fit and 1/2"-13 UNC coarse threading ensuring reliable fastening in heavy-duty assemblies
• Efficient installation via 5/16" hex drive and standard 82° countersink angle for flush mounting and reduced installation time
• Full-threaded design providing consistent holding power along the entire 8" length for maximum load distribution
• Regulatory compliance meeting ASME B18.3 standards, RoHS 3, and REACH for global industrial use and supply chain compatibility
• Durable flat head profile with 0.938" diameter and 0.251" height offering secure seating in countersunk applications

Professional Applications & Engineering Value

This heavy-duty flat head screw addresses critical engineering challenges in construction and industrial equipment where vibration resistance, corrosion protection, and structural integrity are paramount. The 18-8 stainless steel material combined with passivated finish prevents galvanic corrosion and chemical degradation in outdoor or high-moisture environments. Its 1/2"-13 UNC coarse threading with Class 3A fit ensures rapid assembly and secure fastening in structural steel, machinery bases, and heavy-frame assemblies, reducing maintenance cycles. The fully threaded 8" length and 82° countersink angle provide uniform stress distribution and flush surface mounting, eliminating protrusions in conveyor systems, industrial platforms, and infrastructure projects where safety and durability are non-negotiable.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit and UNC coarse thread profile ensuring dimensional accuracy. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions. Thread specifications include right-hand direction, 0.5" diameter, and full threading along the 8" length. Standard flat head profile with 0.938" diameter and 0.251" height maintains consistent countersink performance.