S-97763A366 1/2"-13 x 1 1/4" 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
- Exceptional corrosion resistance from 18-8 Stainless Steel with Black-Oxide coating, ideal for harsh industrial environments
- Superior clamping force and joint integrity with 70,000 psi tensile strength and Rockwell B55 hardness
- Precise, reliable thread engagement ensured by Class 3A thread fit and UNC coarse threading
- Efficient installation and high torque application with 5/16" hex drive and fully threaded design
- Reduced risk of snagging and improved aesthetics due to the rounded button head profile
- Compliance with major industry standards including ASME B18.3 for dimensional consistency
- Safe for regulated industries with RoHS 3 and REACH environmental compliance
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this 1/2"-13 UNC Rounded Head Screw delivers critical performance where failure is not an option. The Black-Oxide 18-8 Stainless Steel construction provides a robust defense against corrosion, significantly extending service life in moisture-prone or chemically aggressive settings. The combination of a coarse UNC thread and Class 3A fit allows for rapid assembly with minimal cross-threading risk, while the 5/16" hex drive facilitates high-torque tightening with standard tools. This fully threaded design ensures maximum grip length, making it an indispensable industrial fastener for heavy machinery, structural frameworks, and equipment requiring reliable, long-term fastening solutions under substantial vibrational and tensile loads.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC thread with a precision Class 3A thread fit for superior interchangeability. Manufacturing and dimensional specifications strictly conform to ASME B18.3. The product is verified to be compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets the latest environmental and safety standards for hazardous substances.
