S-92949A884 1/2"-20 x 2" ASME B18.3, ASTM F879 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 and passivated finish, ideal for harsh environments and extended service life.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and resistance to mechanical failure in demanding applications.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies and reduced risk of loosening.
- Hex drive compatibility (5/16") allows for easy installation and high torque application with standard tools, minimizing assembly time.
- Fully threaded design offers consistent engagement along the entire length, enhancing grip and distribution of stress.
- Rounded (button) head profile delivers a low-profile, finished appearance while reducing snagging risks in machinery.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations for safe, reliable use.
Professional Applications & Engineering Value
This 1/2"-20 x 2" rounded head screw is engineered to address critical industrial challenges, such as vibration-induced loosening and corrosion in machinery, automotive, and structural assemblies. Made from 18-8 Stainless Steel with a passivated finish, it resists oxidation and chemical exposure, prolonging component life in humid or corrosive settings. The UNF fine thread and Class 3A fit ensure precise, secure fastening, reducing maintenance needs and enhancing safety. Its hex drive design facilitates quick installation in tight spaces, making it a reliable choice for high-stress applications where durability and compliance with standards like ASME B18.3 are paramount.
Specification Summary & Compliance
This screw features a 1/2"-20 UNF fine thread with Class 3A thread fit for high precision, fully threaded along a 2" length. It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
