S-91794A133 5-40 x 1" 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 harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness to withstand high-stress applications
• Precise thread engagement through Class 2A fit UNC coarse threading ensuring reliable fastening and vibration resistance
• Optimized head design featuring high, narrow Fillister profile with slotted drive for efficient installation and flush mounting
• Full threading capability along the entire 1" length provides maximum grip and load distribution
• Industry-standard compliance with ASME B18.6.3 specifications for guaranteed dimensional accuracy and performance
• Environmental regulation adherence through RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

These 18-8 stainless steel rounded head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and mechanical reliability are paramount. The passivated finish significantly enhances surface durability against chemical exposure and oxidation, while the high, narrow Fillister head profile with slotted drive enables precise installation in confined spaces. The 5-40 UNC coarse threading with Class 2A fit ensures rapid assembly and secure fastening in applications subject to vibration and dynamic loads. Engineered to ASME B18.6.3 standards, these fully threaded screws provide consistent performance in machinery, electronic enclosures, and precision equipment where fastener integrity directly impacts operational safety and maintenance intervals.

Specification Summary & Compliance

This 5-40 UNC threaded screw maintains precise Class 2A thread fit tolerances with right-hand thread direction and coarse thread spacing. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations regarding substance restrictions, ensuring environmental responsibility and workplace safety.