Muro #8 X 1-3/4" Twinfast Coarse Thread Screw, Flat Head, #2 Square Drive, Sharp Point Screw Tip, Yellow Zinc Coating - 2700 Pcs

MURO 8x1-3/4 twinfast coarse thread wood screws (CS8134YLP) are specified for subfloor and underlayment fastening in residential and commercial flooring assemblies. The screws are manufactured from carbon steel to provide consistent tensile strength and controlled torsional performance under powered driving conditions. The yellow zinc finish supports corrosion resistance in interior construction environments and reduces surface oxidation during storage and installation. The sharp point supports direct penetration into plywood and OSB substrates without pre-drilling in standard applications. The 2 square drive configuration supports controlled torque transfer and reduced cam-out during repetitive fastening cycles. These fasteners are compatible with wood-to-wood fastening tasks in flooring, decking underlayment, and general carpentry installations.

• Improved Installation Efficiency



The twinfast coarse thread design increases driving speed and reduces installation time in repetitive fastening applications.



• Controlled Torque Transfer



The 2 square drive interface supports stable bit engagement and reduces cam-out during powered driving cycles.



• Consistent Penetration Performance



The sharp point supports direct penetration into plywood and OSB substrates without pre-drilling in standard wood applications.



• Corrosion-Resistant Finish



The yellow zinc coating supports corrosion resistance in interior construction environments and controlled storage conditions.



• Secure Subfloor Holding Strength



The coarse thread geometry supports reliable holding performance in subfloor and underlayment fastening assemblies.



• Reduced Material Splitting



The thread geometry supports controlled engagement in plywood and OSB, reducing the risk of edge splitting during subfloor and underlayment fastening applications.