S-91251A142 3/4"-10 x 10" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in demanding environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides tight tolerances for secure fastening, enhancing assembly integrity and vibration resistance.
• Heavy-duty hex drive design with a 5/8" drive size allows for high-torque installation, speeding up assembly while preventing tool slippage.
• Coarse UNRC threading enables quick engagement and disassembly, ideal for applications requiring frequent adjustments or maintenance.
• Partially threaded shank offers optimized grip length for concentrated clamping force, improving joint stability in structural setups.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety, meeting global industrial standards.

Professional Applications & Engineering Value

Engineered for robustness, this 3/4"-10 socket head cap screw in black-oxide alloy steel addresses critical challenges in heavy machinery, automotive, and construction sectors. Its high tensile strength (170,000 psi) and Rockwell C37 hardness prevent stripping and deformation under extreme loads, while the coarse UNRC thread and Class 3A fit ensure rapid, secure fastening in coarse-alignment scenarios. The black-oxide surface treatment resists rust and wear, prolonging lifespan in humid or abrasive conditions. Ideal for bolting frames, presses, and equipment bases, it delivers dependable performance where precision and durability are paramount, reducing downtime and replacement costs.

Specification Summary & Compliance

This screw features a 3/4"-10 thread size with Class 3A thread fit for precise tolerance, coarse thread spacing, and a minimum thread length of 2". It conforms to ASTM A574 specifications for high-strength socket head cap screws, ensuring consistent manufacturing quality. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for industrial use.