S-94779A900 1/4"-20 x 1 1/2" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Exceptional load distribution thanks to the wide truss head design that reduces surface pressure and prevents material damage
• High tensile strength of 70,000 psi ensures reliable performance under heavy mechanical stress and vibration
• Rockwell B70 hardness provides excellent durability and resistance to wear during repeated installation and removal
• Full threading with Class 2A fit delivers secure fastening and consistent engagement across the entire length
• Phillips No. 3 drive enables efficient installation with standard tools while minimizing cam-out risks
• Comprehensive regulatory compliance including ASME B18.6.3, RoHS 3, and REACH for global industrial applications

Professional Applications & Engineering Value

These Black-Oxide 18-8 Stainless Steel Truss Head Phillips Screws address critical engineering challenges in demanding environments. The combination of corrosion-resistant stainless steel with protective black-oxide coating provides long-term reliability in moisture-prone applications, while the wide truss head design significantly increases bearing surface area to prevent pull-through in softer materials. The fully threaded UNC coarse thread pattern ensures rapid installation and superior holding power in various substrates, making these 1/4"-20 screws ideal for assembly lines, electrical enclosures, machinery guards, and structural components where vibration resistance and consistent performance are paramount. The Phillips drive system offers compatibility with standard industrial tools while maintaining installation efficiency.

Specification Summary & Compliance

This 1/4"-20 x 1-1/2" screw features precision Class 2A thread fit with UNC coarse threading (20 threads per inch) for reliable engagement and manufacturing consistency. Manufactured to exacting ASME B18.6.3 standards for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets. Mechanical properties include 70,000 psi tensile strength and Rockwell B70 hardness for dependable performance in demanding applications.