S-98164A313 3/8"-16 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 316 stainless steel construction, ideal for harsh chemical and marine environments
- Exceptional thread reliability with Class 3A fit for precise, vibration-resistant fastening in critical applications
- Enhanced durability from passivated finish that increases surface hardness and extends service life
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty loads
- Easy installation and removal with 7/32" hex drive that provides secure tool engagement and prevents stripping
- Full threading capability ensures consistent grip along the entire 2" length for uniform clamping force
- Regulatory compliance meets ASME B18.3 standards and environmental regulations (RoHS 3, REACH) for global applications
Professional Applications & Engineering Value
These 316 stainless steel rounded head screws deliver critical corrosion resistance where standard fasteners fail. The passivated finish creates a protective oxide layer that withstands aggressive chemicals, saltwater, and extreme temperatures, making them ideal for marine equipment, chemical processing plants, and food-grade machinery. The Class 3A UNC coarse thread provides superior engagement in soft materials and high-vibration environments, while the hex drive ensures maximum torque transfer without cam-out. With full threading along the 2" length, these screws distribute clamping force evenly, preventing joint loosening in structural applications and reducing maintenance cycles in industrial assemblies.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit for precision tolerance. Features 3/8"-16 UNC coarse threads with right-hand direction and fully threaded 2" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Material certification includes 316 stainless steel with passivated surface treatment, Rockwell B55 hardness, and 70,000 psi tensile strength rating.
