S-92186A558 1/4"-20 x 4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws
Super-Corrosion-Resistant 316 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 316 stainless steel construction, ideal for harsh marine and chemical environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Secure and stable fastening provided by the partially threaded design and 3/4" minimum thread length
- Easy installation and removal with external hex drive and coarse UNC threads for quick assembly
- Precise thread fit with Class 2A tolerance ensuring consistent engagement and vibration resistance
- Compliance with industry standards including ASME B18.2.1, RoHS 3, and REACH for guaranteed quality and safety
- Versatile 4" length suitable for a wide range of industrial and structural applications
Professional Applications & Engineering Value
This 1/4"-20 UNC hex head screw in 316 stainless steel delivers critical performance in demanding environments where corrosion and mechanical stress are concerns. The partially threaded design concentrates thread engagement where it's needed most, preventing loosening under vibration while the coarse thread facilitates faster installation in tough materials. With its external hex drive and right-hand thread, it offers familiar, tool-friendly operation for maintenance crews. Engineered for industrial and marine applications, this fastener solves common failure points in equipment, piping systems, and offshore structures by combining high tensile strength with exceptional durability against saltwater, chemicals, and extreme temperatures.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit per UNC standards, ensuring reliable mating with nuts and tapped holes. Manufacturing strictly follows ASME B18.2.1 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for use in regulated industries.
