S-92949A720 1/2"-13 x 2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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, ideal for harsh industrial environments.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty fastening.
- Precise, secure thread engagement with UNC coarse spacing and Class 3A fit, reducing cross-threading and ensuring consistent performance.
- Efficient installation and removal via the 5/16" hex drive, providing high torque transmission and reducing tool slippage.
- Full-threaded design for maximum grip length and uniform stress distribution along the entire fastener.
- Compliance with major standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
- Rounded button head profile for a finished appearance and reduced risk of snagging in assembled applications.
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw is engineered to address common industrial challenges such as vibration loosening, corrosion-induced failure, and assembly inefficiency. The UNC coarse thread with Class 3A fit ensures quick alignment and robust holding power in metals and plastics, minimizing installation errors. Its hex drive design allows for high-torque application, making it suitable for machinery, structural frames, and equipment requiring repeated maintenance. The passivated finish enhances the natural corrosion resistance of stainless steel, extending service life in moist or chemically aggressive settings. Ideal for OEM and MRO applications, this screw delivers reliable performance where durability and regulatory compliance are critical.
Specification Summary & Compliance
This screw meets ASME B18.3 specifications, with a Class 3A thread fit for precise dimensional accuracy. Threading follows UNC coarse standards (1/2"-13), and the product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for industrial use.
