S-91783A546 1/4"-20 x 1 1/2" ASME B18.6.3 Stainless Steel Round 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 with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under heavy loads
• Precision threading compatibility featuring UNC coarse threads with Class 2A fit for secure fastening and easy installation
• Full threading design ensures maximum grip length and uniform stress distribution across the entire fastener
• Standard slotted drive with rounded head profile provides straightforward installation using common tools
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Right-hand thread direction with coarse spacing enables quick assembly and disassembly in various applications

Professional Applications & Engineering Value

These 18-8 stainless steel rounded head screws deliver exceptional engineering value in demanding industrial settings where corrosion resistance and mechanical reliability are paramount. The passivated surface treatment creates an enhanced protective oxide layer that significantly extends service life in moist or chemically aggressive environments. Featuring UNC coarse threads with Class 2A fit, these fully threaded slotted screws provide superior engagement in various materials while maintaining consistent clamping force. The combination of 100,000 psi tensile strength and Rockwell B100 hardness ensures these fasteners withstand vibration, shock loads, and thermal cycling in machinery, equipment assembly, and structural applications. The rounded head design with standard slotted drive offers both aesthetic appeal and practical installation benefits across manufacturing, marine, food processing, and chemical processing industries.

Specification Summary & Compliance

This 1/4"-20 x 1-1/2" rounded head slotted screw maintains precise Class 2A thread fit tolerances with UNC coarse threading (20 threads per inch) and right-hand direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance standards. The fastener is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical safety, ensuring environmental responsibility and workplace safety.