S-92198A696 5/16"-18 x 3 1/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws
18-8 Stainless Steel Hex Head 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 with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
- High tensile strength of 80,000 psi ensures dependable performance under heavy loads and stress.
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation.
- Coarse UNC thread and Class 2A fit offer faster assembly and reliable engagement in various materials.
- External hex drive and hex head design allows for easy installation and high torque application with standard tools.
- Partially threaded shank enables secure clamping where full threading isn't required, improving joint stability.
- Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality, safety, and environmental standards are met.
Professional Applications & Engineering Value
This 5/16"-18 UNC hex head screw is engineered for demanding industrial applications where reliability and corrosion resistance are critical. The 18-8 Stainless Steel material combats rust and chemical exposure, making it suitable for outdoor equipment, marine environments, and food processing machinery. Its coarse thread design ensures quick installation and strong holding power in soft materials or where vibration resistance is needed. The partially threaded configuration provides optimal clamp load distribution, reducing the risk of loosening in structural assemblies, machinery frames, and automotive components. With an external hex drive, it supports high-torque applications, facilitating efficient maintenance and assembly processes in construction, manufacturing, and heavy equipment sectors.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. It meets ASME B18.2.1 specifications for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations without hazardous substances.
