S-92949A854 5/16"-18 x 1 1/8" 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 construction and passivated finish, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration.
- Precise Class 3A thread fit provides secure, vibration-resistant fastening in demanding applications.
- Convenient 3/16" hex drive allows for easy installation and removal with standard tools.
- Fully threaded design offers maximum grip and holding power along the entire shank length.
- Rockwell B55 hardness delivers excellent durability and resistance to wear and deformation.
- Compliance with RoHS 3 and REACH ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This 5/16"-18 UNC rounded head hex screw is engineered to address critical challenges in industrial assembly, where corrosion resistance and high tensile strength are paramount. The 18-8 stainless steel material, combined with a passivated finish, provides exceptional protection against rust and chemical exposure, making it ideal for machinery, marine equipment, and outdoor structures. The coarse UNC threading and Class 3A fit ensure quick installation and reliable performance in high-vibration environments, reducing maintenance downtime. Its rounded button head design offers a low-profile, flush finish, enhancing safety and aesthetics in visible applications. Fully compliant with ASME B18.3 standards, this screw delivers consistent quality and interoperability in heavy-duty industrial applications.
Specification Summary & Compliance
This screw features precise 5/16"-18 UNC coarse threading with a Class 3A thread fit for superior engagement and tolerance. Manufactured in accordance with ASME B18.3 specifications (referencing ASTM F879), it ensures dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.
