S-91783A078 2-56 x 5/16" ASME B18.6.3 Stainless Steel Round Head Slotted Screws
Stainless Steel Round Head Slotted Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance thanks to 18-8 Stainless Steel construction and passivated finish, ideal for harsh environments
- High tensile strength of 100,000 psi ensures reliable, long-lasting fastening in demanding applications
- Excellent thread engagement with Class 2A fit and coarse UNC thread for quick assembly and reduced cross-threading risk
- Durable Rockwell B100 hardness provides resistance to wear and deformation during installation and use
- Full threading along the 5/16" length offers maximum grip and adjustability in various material thicknesses
- Slotted drive and rounded head design allows for easy installation and a smooth, snag-free profile
- Compliance with major industrial standards including ASME B18.6.3, RoHS 3, and REACH ensures safety and regulatory acceptance
Professional Applications & Engineering Value
This 2-56 UNC Rounded Head Slotted Machine Screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. Made from 18-8 Stainless Steel with a passivated finish, it provides exceptional resistance to rust and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. The coarse thread and Class 2A thread fit ensure quick, secure fastening with minimal effort, reducing installation time and improving productivity on assembly lines. Its fully threaded design and high tensile strength offer reliable performance in applications like electronics enclosures, machinery panels, and automotive components, where durability and precision are critical.
Specification Summary & Compliance
This screw features a 2-56 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy and ease of use. It is manufactured in compliance with ASME B18.6.3 specifications, ensuring consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer products without hazardous substances.
