S-90276A305 12-24 x 3" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• High load-bearing capacity with 60,000 psi tensile strength and Rockwell B69 hardness for reliable performance under stress
• Optimized thread engagement through coarse UNC threading and Class 2A fit, ensuring secure fastening and vibration resistance
• Easy installation and removal with standard slotted drive design and rounded head profile for straightforward tool access
• Controlled fastening precision with partially threaded shank design, preventing over-tightening in sensitive assemblies
• Industry compliance assurance meeting ASME B18.6.3 specifications for consistent quality and dimensional accuracy
• Environmental regulation compliance with RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

These 12-24 UNC zinc-plated steel rounded head screws deliver exceptional engineering value in demanding industrial applications where corrosion resistance and mechanical strength are critical. The coarse thread design provides superior holding power in soft materials and prevents cross-threading during assembly, while the partial threading allows for precise clamp load control in multi-material assemblies. The slotted drive system offers compatibility with standard tools for maintenance-friendly installations in confined spaces. Particularly valuable in construction, machinery assembly, and equipment manufacturing, these screws maintain integrity under dynamic loads thanks to their 60,000 psi tensile strength and corrosion-resistant zinc plating that withstands environmental exposure without compromising fastener performance.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with 12-24 UNC coarse threads and right-hand threading direction. These 3" length screws feature standard rounded head profile with 0.408" diameter and partial threading with minimum 1½" thread length. Fully compliant with ASME B18.6.3 dimensional standards, RoHS 3 (2015/863/EU) restrictions on hazardous substances, and REACH (EC 1907/2006) chemical safety regulations for industrial use.