S-92210A452 1/2"-20 x 3" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive Flat 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 and passivated finish for extended service life in harsh environments
- Precise thread engagement through Class 3A thread fit and UNF fine threading, ensuring reliable fastening in critical applications
- High mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial loads
- Efficient installation with 5/16" hex drive and standard 82° countersink angle for flush mounting and secure torque application
- Full threading coverage across the 3" length provides maximum grip and adjustment flexibility in assembled components
- Regulatory compliance with ASME B18.3 standards, RoHS 3, and REACH for safe use in regulated industries
- Right-hand thread direction with consistent fine spacing for straightforward assembly and disassembly procedures
Professional Applications & Engineering Value
This 1/2"-20 UNF Class 3A flat head screw is engineered to address common industrial fastening challenges, including vibration resistance, corrosion prevention, and precise alignment. The 18-8 stainless steel material combined with a passivated finish provides exceptional durability against moisture, chemicals, and temperature variations, making it ideal for machinery, automotive assemblies, and outdoor equipment. The hex drive design ensures high torque transmission without cam-out, while the 82° countersink angle allows for seamless flush mounting in pre-drilled surfaces. With its fine thread spacing and Class 3A fit, it maintains tight tolerances in high-stress applications, reducing the risk of loosening and improving overall assembly integrity.
Specification Summary & Compliance
This product features a Class 3A thread fit with UNF standard fine threading, ensuring high precision and interchangeability. It complies with ASME B18.3 manufacturing specifications and is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.
