S-91770A858 10-24 x 4" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under heavy loads
• Enhanced load distribution through the wide truss head design that reduces surface pressure and prevents material damage
• Quick installation efficiency with Phillips No. 2 drive and UNC coarse threading that speeds up assembly processes
• Precise thread engagement with Class 2A thread fit ensuring consistent fastening performance and vibration resistance
• Optimized thread application through partial threading design that concentrates threads where needed most
• Regulatory compliance assurance meeting ASME B18.6.3 standards for dimensional accuracy and material quality

Professional Applications & Engineering Value

This 10-24 x 4" rounded truss head Phillips screw delivers exceptional engineering value across demanding industrial applications. The passivated 18-8 stainless steel construction provides superior corrosion resistance, making it ideal for outdoor equipment, marine environments, and chemical processing facilities where moisture and corrosive elements are constant challenges. The wide truss head design offers significantly increased bearing surface, distributing clamping force over a larger area to prevent damage to softer materials while providing excellent resistance to vibration loosening. With UNC coarse threading and partial threading, this fastener ensures rapid installation in production environments while maintaining optimal grip length for structural integrity. The combination of 70,000 psi tensile strength and Rockwell B70 hardness makes these industrial screws perfect for heavy-duty fastening in machinery, conveyor systems, and structural assemblies where reliability is critical.

Specification Summary & Compliance

This fastener maintains precise Class 2A thread fit tolerances with UNC coarse threading (10-24 size) and partial threading up to 1½" minimum thread length. Manufacturing strictly adheres to ASME B18.6.3 specifications for dimensional accuracy and performance standards. 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, ensuring environmental responsibility and regulatory acceptance in global markets.