S-91858A587 5/16"-18 x 1 1/2" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws
Stainless Steel Slotted 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 in harsh environments thanks to 316 stainless steel construction and passivated finish
- High-strength performance with 70,000 psi tensile strength and Rockwell B80 hardness for demanding applications
- Reliable thread engagement ensured by Class 2A thread fit and fully threaded design for maximum holding power
- Easy installation and flush finish with standard slotted drive and 82° countersink angle
- Industry-standard compatibility with UNC coarse threads and compliance with ASME B18.6.3 specifications
- Environmental and regulatory compliance meeting RoHS 3 and REACH standards for safe use
- Durable long-term performance from a combination of premium material and precision manufacturing
Professional Applications & Engineering Value
These 316 stainless steel flat head screws are engineered to solve critical challenges in corrosive and high-stress environments. The passivated finish significantly enhances the natural corrosion resistance of the 316 stainless steel, making these fully threaded screws ideal for marine, chemical processing, and food industry applications where moisture and chemicals are present. The UNC coarse threads provide excellent engagement in various materials, while the flat head design with 82° countersink creates a smooth, flush surface perfect for machinery, fixtures, and assemblies where protrusions are unacceptable. With 70,000 psi tensile strength, they deliver reliable performance in heavy-duty applications where vibration resistance and long-term integrity are paramount.
Specification Summary & Compliance
This 5/16"-18 UNC flat head screw features Class 2A thread fit for standard industrial applications and is fully threaded for maximum grip. Manufacturing complies with ASME B18.6.3 specifications ensuring dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental and safety regulations for industrial components.
