S-92703A417 1/4"-20 x 1 1/2" ASME B18.3 Stainless Steel Torx 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
• Enhanced torque transmission and reduced cam-out through Torx Plus IP27 drive system for reliable installation and removal
• Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Optimal flush mounting featuring 82° countersink angle and standard flat head profile for smooth surface finishes
• Full regulatory compliance meeting ASME B18.3 standards, RoHS 3, and REACH requirements for industrial safety
• Complete threading coverage across the 1½" length for maximum grip strength and load distribution

Professional Applications & Engineering Value

These 1/4"-20 UNC flat head screws deliver critical performance advantages for industrial assembly applications where corrosion resistance, high torque requirements, and flush surface mounting are essential. The 18-8 stainless steel composition combined with passivated finish provides superior protection against chemical exposure and environmental degradation, making them ideal for marine equipment, food processing machinery, and outdoor structures. The Torx Plus IP27 drive system addresses common installation challenges by minimizing tool slippage and enabling higher torque application without damaging the drive recess. With Class 2A thread fit and coarse threading, these fasteners ensure rapid assembly while maintaining vibration resistance in high-stress environments. The standardized 82° countersink angle facilitates perfect flush mounting in precision-machined components, eliminating protrusions that could interfere with mechanical operations.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 2A thread fit per UNC specifications, these screws maintain precise 1/4"-20 thread geometry with coarse spacing for optimal engagement. The manufacturing process adheres to ASME B18.3 specifications for flat head screw dimensions and tolerances. Regulatory compliance includes full conformance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) requirements for chemical safety, ensuring environmental responsibility and workplace safety standards are met for global industrial applications.