S-90585A662 5/16"-18 x 1 3/4" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive Flat Head 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
- Enhanced thread reliability through Class 3A thread fit, ensuring precise, secure fastening in demanding applications
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for long-term structural integrity
- Optimized flush mounting with 82° countersink angle and flat head design for seamless surface integration
- Easy installation and removal using standard 3/16" hex drive, reducing assembly time and tool wear
- Full-length threading provides maximum grip and load distribution across the entire fastener length
- Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These 316 Stainless Steel flat head screws deliver critical performance in corrosive environments where standard fasteners fail. The passivated finish enhances surface protection while maintaining dimensional stability. Engineered with UNC coarse threads and Class 3A thread fit, they provide superior vibration resistance in machinery, marine hardware, and chemical processing equipment. The combination of 70,000 psi tensile strength and full threading ensures reliable performance in high-stress applications, from structural assemblies to industrial machinery maintenance. Their 82° countersink design allows for flush mounting in precision applications where protrusion isn't acceptable.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit tolerance. Features 5/16"-18 UNC coarse threads in right-hand direction with full threading. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Dimensional accuracy maintained with head diameter tolerance of -0.056" to 0" and standardized 82° countersink angle.
