S-91465A266 3/4"-10 x 7" ASTM A307 Square Head Screws

Key Features & Benefits at a Glance

• Enhanced torque transmission with 1 1/8" external square head for secure installation using standard wrenches
• Superior material reliability through ASTM A307 Grade A steel construction ensuring consistent performance
• Optimized load distribution with coarse UNC threading that resists vibration loosening in heavy-duty applications
• Precision thread engagement via Unified Standard Class 2A fit for reliable assembly and interchangeability
• Strategic partial threading allowing unthreaded shank sections for enhanced shear strength
• Environmental compliance assurance with RoHS 3 (2015/863/EU) compliance for restricted substance control
• Proven mechanical durability with 60,000 PSI tensile strength and Rockwell B69 hardness rating

Professional Applications & Engineering Value

This 3/4"-10 UNC square head screw delivers critical engineering solutions for industrial fastening challenges where vibration resistance and high torque requirements are paramount. The ASTM A307 Grade A steel construction provides reliable strength while the coarse thread spacing maintains grip under dynamic loads. The external square drive head design prevents cam-out during high-torque installation, making it ideal for construction equipment, machinery assembly, and structural applications. With partial threading optimizing the stress distribution along the 7" length, this heavy-duty fastener ensures long-term joint integrity in demanding environments while meeting industry RoHS 3 compliance standards.

Specification Summary & Compliance

Manufactured to precise Unified Standard Class 2A thread tolerances with 3/4"-10 UNC coarse threading and right-hand thread direction. Complies with ASTM A307 specifications for low-strength fasteners and RoHS 3 (2015/863/EU) environmental directives. Features include 1/2" head height, 1 1/8" square head width, 2" minimum thread length, and inch system measurements throughout.