S-91251A947 1"-8 x 16" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Exceptional torque transmission through 3/4" hex drive design, preventing tool slippage during high-tension applications
• Precision Class 3A thread fit ensures secure fastening with minimal vibration loosening in critical assemblies
• Heavy-duty 170,000 psi tensile strength maintains structural integrity under extreme mechanical loads
• Optimized partial threading provides both gripping strength and clearance where full threads aren't required
• Industry-standard UNRC coarse threads enable quick assembly and reduced cross-threading risks
• Comprehensive compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these socket head cap screws solve critical fastening challenges through their black-oxide alloy steel construction and Class 3A thread precision. The 1"-8 coarse thread configuration combined with partial threading delivers optimal clamp load distribution while allowing clearance in non-threaded sections. The 3/4" hex drive interface provides superior torque transmission for heavy machinery, manufacturing equipment, and structural frameworks where vibration resistance and 170,000 psi tensile strength are paramount. This combination addresses common failure points in high-stress assemblies while maintaining RoHS and REACH compliance for global manufacturing standards.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with Class 3A thread fit tolerance and UNRC coarse thread profile. The 1"-8 thread maintains precise ISO-compatible dimensions while the Rockwell C37 hardness ensures consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use worldwide.