S-91794A124 5-40 x 1/4" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in demanding environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under load
• Precision thread engagement with Class 2A thread fit ensuring consistent fastening and vibration resistance
• Optimized drive compatibility featuring a slotted fillister head design for straightforward installation with standard tools
• Full-threaded construction providing maximum grip length and superior holding power across the entire fastener length
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Versatile coarse threading with 5-40 UNC pattern enabling quick assembly and reduced cross-threading risk

Professional Applications & Engineering Value

These 5-40 UNC rounded head slotted screws deliver critical engineering advantages in industrial settings where corrosion resistance and mechanical reliability are paramount. The combination of 18-8 stainless steel material and passivated surface treatment creates a robust barrier against chemical exposure and environmental degradation, significantly extending component lifespan in manufacturing equipment, electronic enclosures, and marine applications. The fillister head design with high, narrow profile provides enhanced clearance while the coarse thread configuration ensures rapid installation and superior resistance to vibration-induced loosening. Engineered to ASME B18.6.3 standards, these fully threaded fasteners maintain dimensional consistency for precision assembly operations, reducing installation time and improving overall system integrity in critical mechanical assemblies.

Specification Summary & Compliance

This rounded head slotted screw features precise Class 2A thread fit tolerances with 5-40 UNC coarse threading and right-hand thread direction. Manufacturing compliance includes ASME B18.6.3 specifications for dimensional accuracy and performance standards. Environmental regulatory compliance is confirmed through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, ensuring adherence to international restrictions on hazardous substances for industrial applications requiring certified components.