S-93143A537 1/4"-20 x 1/2" ASME B18.6.3 Aluminum Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior strength-to-weight ratio with 30,000 psi tensile strength in lightweight 2024 aluminum for load-bearing applications without added bulk
• Precision thread engagement with Class 2A UNC coarse threads ensuring reliable fastening and reduced cross-threading risks
• Enhanced durability with Rockwell B40 hardness providing excellent resistance to wear and deformation
• Universal compatibility through ASME B18.6.3 compliance ensuring interchangeability with standard industrial components
• Environmental compliance meeting RoHS 3 and REACH regulations for safe use in regulated industries
• Full-thread engagement along the entire 1/2" length for maximum holding power and vibration resistance
• Traditional slotted drive with rounded head profile for straightforward installation in confined spaces

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 2024 aluminum rounded head slotted screws provide an optimal balance of lightweight construction and structural integrity. The 1/4"-20 UNC coarse thread configuration delivers rapid installation and superior pull-out resistance in soft materials and sheet metal applications. With fully threaded design and Class 2A thread fit, these fasteners maintain consistent clamping force in vibration-prone assemblies while the slotted drive system offers compatibility with standard tools for maintenance and field service. Ideal for aerospace components, electronic enclosures, and machinery where weight reduction and corrosion resistance are critical without compromising on 30,000 psi tensile strength.

Specification Summary & Compliance

This rounded head slotted screw features precise Class 2A thread fit per UNC standards with 1/4"-20 coarse threading and right-hand direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy, while meeting RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The fastener maintains 0.472" head diameter and 1/2" length tolerances with fully threaded construction for consistent performance across industrial applications.