S-91793A113 4-40 x 3/4" 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 with 100,000 psi tensile strength and Rockwell B100 hardness for reliable load-bearing performance
• Precision thread engagement through Class 2A thread fit and UNC coarse threading ensures secure fastening and vibration resistance
• Optimized head design featuring wide rounded binding head profile for enhanced bearing surface and slotted drive for simple installation
• Full threading along 3/4" length provides maximum grip and adjustment flexibility in assembly applications
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Right-hand thread direction with standardized UNC 4-40 sizing for compatibility with existing industrial equipment and components

Professional Applications & Engineering Value

This 4-40 UNC rounded head slotted screw delivers critical engineering solutions where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel composition, enhanced by passivated finish, provides exceptional protection against oxidation and chemical exposure in manufacturing, electronics assembly, and marine applications. The wide rounded binding head distributes clamping force effectively while preventing surface damage to sensitive materials. With fully threaded coarse UNC patterning and Class 2A thread fit, this fastener maintains secure connections in high-vibration environments, reducing maintenance frequency and downtime. The combination of 100,000 psi tensile strength and standardized ASME B18.6.3 compliance ensures consistent performance in precision industrial fastening systems.

Specification Summary & Compliance

This rounded head screw features precise 4-40 UNC coarse threading with Class 2A thread fit tolerance for reliable engagement. Manufacturing conforms to ASME B18.6.3 specifications, ensuring dimensional accuracy and performance consistency. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming restricted substance adherence. The fastener delivers 3/4" length with complete threading, 0.235" head diameter, and right-hand thread direction for standardized industrial implementation.