S-90276A298 12-24 x 1 1/4" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Superior load-bearing capacity with 60,000 psi tensile strength to withstand high-stress applications
• Optimized thread engagement through Class 2A thread fit ensuring consistent, reliable fastening
• Simplified installation and removal with standard slotted drive design for tool compatibility
• Full-threaded design providing maximum grip length and uniform stress distribution
• Industry-standard compliance with ASME B18.6.3 specifications for guaranteed dimensional accuracy
• Environmental regulation adherence meeting RoHS 3 and REACH requirements for safe usage

Professional Applications & Engineering Value

These 12-24 UNC coarse thread screws deliver exceptional engineering value in industrial fastening applications where vibration resistance and long-term reliability are critical. The zinc-plated steel construction provides essential corrosion protection for machinery, electrical enclosures, and assembly line equipment. The rounded head design with slotted drive offers both aesthetic appeal and practical installation benefits, while the coarse threading ensures rapid assembly and superior holding power in various materials. With full threading along the entire 1-1/4" length, these fasteners distribute clamping force evenly, preventing joint loosening under dynamic loads. The combination of 60,000 psi tensile strength and Rockwell B69 hardness makes them ideal for automotive, manufacturing, and heavy equipment applications requiring durable, high-performance fastening solutions.

Specification Summary & Compliance

These rounded head screws feature precise Class 2A thread fit with UNC coarse threading (12-24 size) and right-hand thread direction, manufactured to exacting ASME B18.6.3 standards. The dimensional accuracy includes 0.216" thread diameter, 0.408" head diameter, and 1-1/4" length with full threading. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and regulatory acceptance for industrial use across global markets.