S-93791A499 10-24 x 1" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction and Black-Oxide passivated finish, ideal for harsh industrial environments
• Precise flush mounting thanks to the standard flat head profile and 82° countersink angle for seamless surface integration
• High torque transmission enabled by the 1/8" hex drive, ensuring secure installation and removal without stripping
• Reliable thread engagement with Class 3A thread fit and coarse UNC threading, providing vibration resistance and quick assembly
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
• Full-length threading ensures maximum grip and load distribution across the entire 1" length
• Compliance assurance meeting ASME B18.3 standards and RoHS/REACH regulations for safe, quality-guaranteed use

Professional Applications & Engineering Value

These 10-24 UNC flat head screws are engineered to address critical challenges in industrial assembly, where corrosion, vibration, and high stress are common. The 18-8 Stainless Steel material combined with a Black-Oxide passivated finish provides excellent protection against rust and chemical exposure, making them suitable for outdoor machinery, marine equipment, and automotive components. The Class 3A thread fit and coarse thread spacing ensure fast, secure fastening in metals and plastics, reducing the risk of loosening under dynamic loads. With a fully threaded design and 82° countersink angle, they deliver flush surface mounting in pre-drilled holes, enhancing both aesthetics and safety in applications like enclosures, frames, and precision instruments.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit tolerances and UNC coarse thread standards with a 10-24 thread size and right-hand direction. Manufacturing complies with ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. The product is confirmed RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmentally responsible sourcing and usage in global industrial markets.