S-91783A577 1/4"-20 x 6" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
• High tensile strength of 100,000 psi ensures reliable performance under heavy loads and vibration
• Class 2A thread fit provides consistent, reliable assembly with standard UNC coarse threads
• Partially threaded design allows for precise clamping force control and secure fastening
• Rockwell B100 hardness maintains thread integrity and prevents stripping during installation
• Slotted drive compatibility offers straightforward installation with standard tools
• Full regulatory compliance meets ASME B18.6.3, RoHS 3, and REACH standards for quality assurance

Professional Applications & Engineering Value

This 1/4-20 UNC slotted screw delivers exceptional engineering value in demanding industrial applications where corrosion resistance and mechanical strength are critical. The 18-8 Stainless Steel composition with passivated finish provides superior protection against chemical exposure and environmental degradation, making it ideal for marine equipment, food processing machinery, and outdoor structures. The partially threaded configuration ensures optimal stress distribution while the rounded head design minimizes surface protrusion. With coarse threading and Class 2A fit, installation is consistently reliable even in vibration-prone environments, reducing maintenance cycles and improving equipment longevity across manufacturing, construction, and heavy machinery sectors.

Specification Summary & Compliance

This 6-inch rounded head screw features precise 1/4"-20 UNC coarse threads with Class 2A thread fit tolerance for consistent mating with standard components. Manufacturing adheres to ASME B18.6.3 specifications for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) environmental standards, ensuring safe use across global markets while maintaining 100,000 psi tensile strength and Rockwell B100 hardness specifications.