S-91858A712 1/2"-13 x 1" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 Stainless Steel construction with passivated finish
• Reliable high-strength performance with 70,000 psi tensile strength and Rockwell B80 hardness for demanding applications
• Precision thread engagement ensured by Class 2A fit and UNC coarse threading for secure fastening
• Optimal flush mounting with standard 82° countersink angle and flat head design for clean surface finishes
• Full-threaded convenience providing maximum grip length and installation flexibility
• Industry-standard compliance meeting ASME B18.6.3 specifications for guaranteed interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance for global supply chain compatibility

Professional Applications & Engineering Value

These 1/2"-13 UNC flat head slotted screws deliver exceptional engineering value in demanding industrial environments where corrosion resistance and mechanical strength are critical. The 316 Stainless Steel material provides superior protection against chemical exposure and atmospheric corrosion, making these industrial screws ideal for marine applications, chemical processing equipment, and food processing machinery. The passivated finish enhances surface durability while maintaining the material's inherent corrosion-resistant properties. With coarse UNC threading and Class 2A fit, these fasteners ensure quick assembly and reliable performance in vibration-prone applications. The standard flat head profile with 82° countersink allows for flush mounting in precision assemblies where surface protrusion cannot be tolerated, while the slotted drive provides compatibility with standard installation tools.

Specification Summary & Compliance

This flat head machine screw features precise Class 2A thread fit with 1/2"-13 UNC coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.6.3 standards ensuring dimensional accuracy and interchangeability. The screws meet RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations for environmental safety. Mechanical properties include 70,000 psi tensile strength and Rockwell B80 hardness, with full threading along the 1" length and standard inch system measurements throughout.