S-91783A589 5/16"-18 x 1 3/4" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• High mechanical reliability backed by 100,000 psi tensile strength and Rockwell B100 hardness for demanding applications.
• Easy installation and removal thanks to the slotted drive design, simplifying assembly and maintenance tasks.
• Consistent thread engagement with UNC coarse threading and Class 2A fit, ensuring secure fastening and vibration resistance.
• Full threading along the 1 3/4" length provides maximum grip and load distribution in various materials.
• Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
• Durable rounded head profile reduces stress concentration and enhances aesthetic integration in finished products.

Professional Applications & Engineering Value

This 5/16"-18 x 1 3/4" rounded head slotted screw in 18-8 stainless steel addresses critical engineering challenges in industrial settings. The passivated finish significantly enhances corrosion resistance, making it suitable for applications exposed to moisture, chemicals, or outdoor elements, such as machinery assembly, marine equipment, and food processing systems. Its UNC coarse threads and Class 2A fit ensure quick, reliable installation with minimal cross-threading risks, while the fully threaded design offers uniform stress distribution for long-term mechanical integrity. By meeting ASME B18.6.3 specifications, this screw provides consistent performance in high-stress environments, reducing downtime and maintenance costs for B2B clients in manufacturing, construction, and automotive sectors.

Specification Summary & Compliance

This screw features precise Class 2A thread fit with UNC coarse threading (5/16"-18) and a length of 1 3/4", ensuring dimensional accuracy per industry standards. It is manufactured in compliance with ASME B18.6.3 for mechanical fasteners and adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental safety and suitability for global supply chains.