S-93143A545 1/4"-20 x 1 1/4" ASME B18.6.3 Aluminum Round Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio from 2024 aluminum construction, providing reliable performance while reducing component weight
• Superior corrosion resistance maintains fastener integrity in demanding industrial environments
• 30,000 psi tensile strength ensures dependable holding power for critical applications
• Rockwell B40 hardness delivers excellent durability and resistance to wear over time
• Class 2A thread fit provides optimal assembly clearance while maintaining secure fastening
• Fully threaded design maximizes engagement and distributes stress evenly across the entire length
• Slotted drive compatibility offers straightforward installation with standard tools

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 2024 aluminum rounded head slotted screws provide an optimal balance of strength and lightweight performance. The 1/4"-20 UNC coarse thread configuration ensures rapid installation and reliable holding in materials where fine threads might compromise integrity. The fully threaded design eliminates weak points and distributes clamping force evenly, making these industrial screws ideal for applications requiring consistent tension along the entire fastener length. The rounded head profile with slotted drive offers both aesthetic appeal and practical installation benefits, while the aluminum construction prevents galvanic corrosion when used with compatible materials. These characteristics make them particularly valuable in aerospace, electronics, and precision machinery applications where weight reduction and corrosion resistance are critical engineering considerations.

Specification Summary & Compliance

This 1/4"-20 UNC screw features precise Class 2A thread fit tolerances and right-hand threading with coarse spacing for optimal performance. Manufactured to meet ASME B18.6.3 specifications, ensuring dimensional accuracy and interchangeability. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and safety standards. With a length of 1-1/4" and complete threading, this screw delivers consistent performance across industrial applications requiring reliable aluminum fasteners with certified quality assurance.