S-91793A124 5-40 x 1/4" ASME B18.6.3 Stainless Steel Binding Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength delivering 100,000 psi tensile strength and Rockwell B100 hardness for reliable, long-term performance
• Precise thread engagement with Class 2A fit and UNC coarse threading ensuring easy installation and secure fastening
• Wide binding head design provides enhanced bearing surface and prevents pull-through in soft materials
• Full threading along the 1/4" length offers maximum grip and adjustment flexibility in assemblies
• Slotted drive compatibility allows for quick installation with standard tools while maintaining a clean aesthetic
• Compliance with major industry standards including ASME B18.6.3 for dimensional accuracy and environmental regulations

Professional Applications & Engineering Value

This 5-40 UNC rounded head slotted screw delivers exceptional engineering value across industrial applications where corrosion resistance and mechanical reliability are critical. The 18-8 stainless steel material combined with passivated finish provides superior protection against oxidation and chemical exposure, making these binding head screws ideal for electrical components, machinery assemblies, and marine equipment. The coarse UNC threading and Class 2A fit ensure rapid installation and vibration resistance in production environments, while the wide rounded head profile distributes clamping force effectively without damaging sensitive materials. These fully threaded fasteners maintain dimensional precision per ASME B18.6.3 specifications, offering consistent performance in automated assembly systems and precision equipment manufacturing.

Specification Summary & Compliance

This screw features precise 5-40 UNC coarse threading with Class 2A fit tolerance and 0.125" thread diameter manufactured to ASME B18.6.3 dimensional standards. The fastener is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. Mechanical properties include 100,000 psi tensile strength and Rockwell B100 hardness for demanding applications.