S-91781A636 3/8"-16 x 3" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction and passivated finish for long-lasting performance in harsh environments
• High mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing applications
• Precision UNC coarse threading with Class 2A fit ensures smooth installation and secure fastening in various materials
• Standard 82° countersink angle enables flush mounting for clean, professional finishes in visible applications
• Partially threaded design provides optimal grip strength while preventing thread damage during installation
• Slotted drive compatibility offers straightforward installation with common hand tools for maintenance and assembly
• Full regulatory compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 3/8"-16 UNC flat head slotted screws provide critical solutions where corrosion resistance and structural integrity are paramount. The 18-8 Stainless Steel composition with passivated finish significantly extends service life in moisture-prone applications, from marine equipment to food processing machinery. The coarse thread spacing and Class 2A thread fit ensure rapid installation without cross-threading risks, while the partially threaded configuration concentrates clamping force precisely where needed. These flat head screws are particularly valuable in applications requiring flush mounting surfaces, such as machinery guards, conveyor systems, and structural assemblies where protrusions would interfere with operation or safety.

Specification Summary & Compliance

This 3/8"-16 UNC flat head slotted screw features precision Class 2A thread fit with coarse thread spacing and partial threading up to 1½" minimum thread length. Manufactured to exact ASME B18.6.3 specifications with standard 82° countersink angle and right-hand thread direction. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.