S-91792A106 4-40 x 1/4" ASME B18.6.3 Stainless Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under high-stress conditions
• Easy installation and removal with standard slotted drive design compatible with common tools, reducing assembly time
• Precise thread engagement through Class 2A fit UNC coarse threads providing secure fastening and vibration resistance
• Full threading along the 1/4" length enables maximum grip and uniform load distribution across the entire fastener
• Industry-standard compliance with ASME B18.6.3 specifications ensures dimensional accuracy and interchangeability
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance for safe industrial use

Professional Applications & Engineering Value

These 4-40 UNC rounded head slotted screws deliver critical performance advantages for industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The combination of 18-8 stainless steel material and passivated surface treatment creates a protective barrier against chemical exposure and atmospheric corrosion, significantly extending service life in demanding environments. The pan head design with slotted drive provides excellent bearing surface while maintaining compatibility with standard screwdrivers, streamlining maintenance procedures. With fully threaded coarse UNC patterns and Class 2A thread fit, these fasteners ensure rapid installation and secure holding power in machinery, electronic enclosures, and precision equipment where vibration resistance is essential.

Specification Summary & Compliance

This fastener maintains precise Class 2A thread fit tolerances according to UNC coarse thread standards with right-hand threading direction. Manufacturing strictly follows ASME B18.6.3 specifications for dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) requirements for chemical safety, making it suitable for global industrial distribution and use.