S-92949A311 0-80 x 5/16" 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 thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh environments.
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty performance.
- Precise and secure fastening ensured by Class 3A thread fit and UNF fine threading, minimizing the risk of loosening under vibration.
- Easy installation and removal with a hex drive style, providing a positive grip for efficient assembly.
- Full-thread engagement along the entire 5/16" length for maximum holding power in a variety of materials.
- Low-profile, rounded button head design offers a finished appearance and reduces snagging in tight spaces.
- Guaranteed quality and safety through compliance with ASME B18.3 standards and environmental regulations like RoHS 3 and REACH.
Professional Applications & Engineering Value
These 0-80 UNF fine thread screws are engineered to solve critical fastening challenges in precision industries. The combination of 18-8 stainless steel and a passivated finish provides excellent resistance to oxidation and corrosion, making them ideal for electronics, aerospace components, and medical devices where reliability is non-negotiable. The Class 3A thread fit and fine UNF thread ensure a tight, secure connection that resists vibration-induced loosening, a common failure point in dynamic assemblies. The rounded button head and hex drive facilitate installation in confined spaces, streamlining assembly processes while the full threading maximizes grip strength in thin-section materials, providing exceptional engineering value for demanding industrial fastener applications.
Specification Summary & Compliance
This product adheres to a Class 3A thread fit for superior dimensional accuracy and a tight fit. The threading conforms to the UNF (Unified National Fine) standard with a size of 0-80. Manufacturing and quality are governed by the ASME B18.3 specification. 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 use in regulated markets.
