S-90300A120 1/4"-20 x 3/4" Hex Head Screws with Flat Washer

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• High tensile strength of 100,000 psi ensures reliable fastening in demanding industrial applications
• Integrated flat washer design provides enhanced load distribution and prevents surface damage
• Class 2A thread fit with UNC coarse threading offers excellent assembly efficiency and vibration resistance
• External hex drive configuration enables quick installation and removal with standard tools
• Full threading along the entire 3/4" length allows for maximum engagement and adjustment flexibility
• Rockwell B95 hardness rating maintains structural integrity under heavy mechanical stress

Professional Applications & Engineering Value

These 18-8 stainless steel hex head screws with integrated flat washers solve critical fastening challenges in industrial environments where corrosion resistance and structural integrity are paramount. The combination of 100,000 psi tensile strength and Rockwell B95 hardness ensures reliable performance in heavy machinery, structural assemblies, and outdoor equipment applications. The UNC coarse threading with Class 2A fit provides excellent engagement in various materials while resisting vibration-induced loosening. The pre-assembled flat washer eliminates separate component handling, streamlining assembly processes while preventing surface marring and improving load distribution. These fully threaded screws offer maximum versatility for applications requiring full-length engagement, making them ideal for construction, manufacturing, and maintenance operations where durability and compliance are essential.

Specification Summary & Compliance

This 1/4"-20 x 3/4" hex head screw features precise UNC coarse threading with Class 2A fit tolerance, ensuring consistent performance and interchangeability. The fastener system maintains dimensional accuracy with 7/16" head width and 5/32" head height for standard tool compatibility. The integrated stainless steel flat washer measures 0.749" OD with 0.064" thickness. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, making these fasteners suitable for regulated industries and international projects.