S-92240A599 5/16"-18 x 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
- Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- Superior tensile strength rated at 80,000 psi provides reliable, high-load fastening for demanding mechanical assemblies.
- Robust Rockwell B70 hardness ensures high durability and resistance to wear, deformation, and thread stripping.
- Full UNC coarse threading along the entire 4-inch length offers faster installation and enhanced grip in a wide range of materials.
- Precise Class 2A thread fit guarantees consistent, secure mating with nuts and tapped holes, reducing assembly issues.
- External hex drive and hex head design allows for high-torque application using standard wrenches, speeding up maintenance and assembly.
- Compliance with ASME B18.2.1, RoHS 3, and REACH ensures product reliability, safety, and environmental standards for global industrial use.
Professional Applications & Engineering Value
This 18-8 Stainless Steel Hex Head Screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress fatigue. The 5/16"-18 UNC coarse thread and fully threaded design provide excellent pull-out resistance and faster installation in metal, wood, and composite substrates, reducing labor time. With an external hex drive, it supports high torque applications in machinery, structural frameworks, and heavy equipment, ensuring a secure fit even under dynamic loads. The stainless steel material offers inherent resistance to rust and chemicals, making it suitable for marine, chemical processing, and food-grade environments where durability and compliance are critical.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and reliable assembly. It meets ASME B18.2.1 specifications for hex head cap screws, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for industrial and international use.
