1/4-20 x 4 Combination (Phil/Slot) Round Head Fully Threaded Machine Screw Zinc WIY These 10-8 x 4 1/2

These 10-8 x 4 1/2 Phillips Bugle Head Coarse Thread Sharp Point Deck Screws are designed for exterior wood-to-wood applications

The flat head design provides a flush finish when installed

This screw is made of steel and has a zinc plated finish

The threads on the shank are 5/16-18

1/4-20 x 4 Combination (Phil/Slot) Round Head Fully Threaded Machine Screw Zinc WIY These 10-8 x 4 1/2This 1 4 20 x 4 Combination (Phil Slot) Round Head Fully Threaded Machine Screw Zinc is a versatile and durable fastener that is commonly used in a variety of applications. The 1 4 20 thread size indicates that the screw has a diameter of 1 4 inch and 20 threads per inch. The 4 inch length refers to the overall length of the screw from the tip to the end of the threads. The combination head features both a Phillips and a slotted drive, providing