S-91440A148 6-32 x 1/2" ASME B18.6.3 Steel Round Head Combination Phillips/Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Enhanced driving flexibility through combined Phillips/Slotted drive, accommodating various tool types for efficient installation
• Reliable thread engagement with fully threaded UNC coarse spacing, ensuring maximum holding power and vibration resistance
• Consistent mechanical performance backed by 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Precision thread fit with Class 2A tolerance, enabling smooth assembly and secure fastening in industrial equipment
• Broad regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial acceptance
• Optimized head design featuring rounded profile for reduced snagging and improved aesthetic integration

Professional Applications & Engineering Value

These zinc-plated steel rounded head screws deliver critical engineering solutions where corrosion resistance and mechanical reliability are paramount. The UNC coarse thread configuration provides excellent pull-out resistance in soft materials and faster installation in production environments. With 60,000 psi tensile strength and Rockwell B70 hardness, they withstand significant vibrational loads and mechanical stress in industrial machinery, electrical enclosures, and automotive assemblies. The dual Phillips/Slotted drive system offers installation versatility for both automated and manual assembly processes, while the rounded head design minimizes protrusion in confined spaces. These fully threaded fasteners ensure maximum thread engagement throughout the entire length, providing superior clamping force distribution for critical joints in manufacturing equipment and structural frameworks.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance. Thread specifications include 6-32 UNC coarse spacing with right-hand threading. Compliant with ASME B18.6.3 manufacturing standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety. Suitable for industrial applications requiring standardized rounded head machine screws with verified quality assurance.