S-92240A593 5/16"-18 x 2 1/2" 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
- Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- High tensile strength of 80,000 PSI ensures reliable performance under heavy loads and prevents fastener failure.
- Superior durability and wear resistance provided by a Rockwell B70 hardness, extending the screw's service life.
- Easy and quick installation with a standard 1/2" external hex head and coarse UNC threading for efficient driving.
- Consistent and reliable fit due to the Class 2A thread fit, reducing the risk of cross-threading and ensuring secure assemblies.
- Full threading along the 2 1/2" length offers maximum grip and adjustability in a wide range of material thicknesses.
- Compliance with major industry standards including ASME B18.2.1, guaranteeing dimensional accuracy and interchangeability.
Professional Applications & Engineering Value
This 5/16"-18 UNC hex head screw is engineered from 18-8 stainless steel to solve critical challenges in demanding environments. Its excellent corrosion resistance makes it suitable for marine, chemical processing, and food industry applications where moisture and corrosive agents are present. The coarse thread design and Class 2A fit provide superior holding power and reduce the risk of stripping in soft materials or under vibration. With an 80,000 PSI tensile strength and fully threaded shank, it ensures a secure, long-lasting connection in structural assemblies, machinery, and heavy equipment. The external hex drive allows for high-torque installation, making it a reliable choice for maintenance and production lines requiring robust industrial fasteners.
Specification Summary & Compliance
This hex head screw features a 5/16"-18 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in compliance with the ASME B18.2.1 standard, ensuring precise dimensions and mechanical properties. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from hazardous substances and safe for use in regulated industries.
