S-91858A624 3/8"-16 x 1" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel and passivated finish, ideal for harsh environments and extended service life.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B80 hardness for reliable performance under heavy loads.
• Excellent thread engagement with UNC coarse threading and Class 2A fit, ensuring easy installation and secure fastening.
• Flush mounting capability due to the standard flat head with 82° countersink angle, providing a smooth surface finish.
• Wide industrial compatibility meeting ASME B18.6.3 specifications, suitable for various machinery and equipment assemblies.
• Enhanced safety and compliance with RoHS 3 and REACH regulations, ensuring environmental and health standards are met.
• Convenient installation and removal with a slotted drive design, allowing for simple tool operation.

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw in 316 stainless steel with a passivated finish is engineered to address critical challenges in industrial settings, such as corrosion from chemicals, moisture, and high-stress conditions. Its fully threaded coarse design and Class 2A fit ensure quick, precise assembly with minimal risk of cross-threading, reducing installation time and maintenance costs. The flat head profile with an 82° countersink angle allows for seamless integration into surfaces, preventing protrusions in machinery, automotive, and marine applications. By combining high tensile strength and durability, it provides long-term reliability in demanding environments, from construction to food processing equipment, where corrosion-resistant screws are essential for operational safety and efficiency.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including UNC thread type with Class 2A fit for consistent accuracy and ease of use. It meets ASME B18.6.3 manufacturing specifications, ensuring reliable performance in mechanical assemblies. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for industrial applications without hazardous substances.