S-91781A622 3/8"-16 x 3/4" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for heavy-duty applications
• Reliable thread engagement through UNC coarse threading with Class 2A fit ensuring consistent fastening performance
• Optimal flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
• Full-length threading provides maximum grip along the entire 3/4" length for superior holding power
• Industry-standard compliance meeting ASME B18.6.3 specifications for guaranteed dimensional accuracy and performance
• Environmental responsibility with RoHS 3 and REACH compliance for safe, sustainable industrial use

Professional Applications & Engineering Value

These 3/8"-16 UNC flat head screws deliver critical engineering advantages in demanding industrial settings. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against corrosion and chemical exposure, making them ideal for manufacturing equipment, marine applications, and food processing machinery where moisture resistance is paramount. The UNC coarse threading with Class 2A fit ensures rapid installation and reliable performance in vibration-prone environments, while the 82° countersink angle creates flush surfaces that prevent snagging and maintain aerodynamic profiles. These fully threaded fasteners distribute clamping force evenly across the entire 3/4" length, solving common challenges of joint loosening and material fatigue in heavy machinery and structural assemblies.

Specification Summary & Compliance

Manufactured to precise ASME B18.6.3 standards, these flat head screws maintain dimensional accuracy with Class 2A thread fit tolerance and standardized UNC coarse threading. The 0.375" thread diameter and 3/4" length ensure consistent performance across applications. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, confirming environmental safety and restricted substance adherence for global industrial use.