S-91253A619 3/8"-16 x 1/2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 130,000 PSI ensures reliable performance in high-stress industrial applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh environments.
• Precise Class 3A thread fit provides secure, vibration-resistant fastening with minimal risk of loosening.
• Fully threaded design offers maximum grip and holding power across the entire screw length.
• Standard 82° countersink angle allows for a flush, professional finish in countersunk holes.
• Hex drive (7/32") enables high-torque installation with common tools, reducing assembly time.
• Compliance with ASTM F835, RoHS 3, and REACH ensures material safety and meets rigorous industry standards.

Professional Applications & Engineering Value

Engineered for demanding industrial fastening applications, these 3/8"-16 UNC flat head screws address critical challenges in machinery assembly, structural frameworks, and heavy equipment. The black-oxide alloy steel construction combats rust and wear, while the Class 3A thread fit and coarse threading enhance durability against dynamic loads and vibrations. Ideal for use in automotive, construction, and manufacturing sectors, these screws provide a reliable solution where high tensile strength and corrosion resistance are paramount, ensuring long-term operational integrity and reduced maintenance costs.

Specification Summary & Compliance

This product adheres to inch system dimensions with a Class 3A thread fit per UNC standards, ensuring precise engagement and reliability. Manufactured in compliance with ASTM F835 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming the absence of hazardous substances. The 82° countersink angle and fully threaded design support consistent performance in standardized applications.