S-99117A950 1/4"-20 x 14" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• High-strength performance with 60,000 psi tensile strength and Rockwell B70 hardness to withstand heavy loads and stress
• Optimized thread engagement through Class 2A thread fit and UNC coarse threading for secure fastening in various materials
• Enhanced driving efficiency with Phillips No. 3 drive design reducing cam-out and improving installation speed
• Versatile partial threading allowing precise clamping force control across the 14" length for structural applications
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3 & REACH)
• Reliable rounded pan head profile providing a finished appearance while distributing seating pressure evenly

Professional Applications & Engineering Value

These zinc-plated steel rounded head screws deliver critical engineering solutions for industrial applications where corrosion resistance and structural integrity are paramount. The 1/4"-20 UNC coarse thread configuration ensures rapid installation and reliable holding power in wood, metal, and composite materials, while the partial threading allows for precise gap bridging in construction and machinery assembly. The Phillips No. 3 drive maintains torque transfer efficiency, reducing worker fatigue during high-volume installations. With 60,000 psi tensile strength, these industrial screws provide dependable performance in heavy-duty frameworks, equipment mounting, and structural supports where vibration resistance and long-term durability are essential.

Specification Summary & Compliance

This product features Class 2A thread fit tolerance per UNC standards with 1/4"-20 coarse threading and partial threading up to 1½" minimum. Manufactured to ASME B18.6.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The zinc-plated steel construction provides consistent performance with Rockwell B70 hardness and 60,000 psi tensile strength ratings.