1/4-20 x 3/8 Six Lobe Pan Head Internal Tooth Sems Machine Screw Fully Threaded Zinc MSW The screws have a slotted

The screws have a slotted pan head and are fully threaded

These 12-14 x 2 Unslotted Indent Hex Washer Self Drill Screws are constructed from durable 18-8 stainless steel

and plastic into concrete

With their compact fillister head

1/4-20 x 3/8 Six Lobe Pan Head Internal Tooth Sems Machine Screw Fully Threaded Zinc MSW The screws have a slottedThis 1 4 20 x 3 8 six lobe pan head internal tooth SEMS machine screw is a fully threaded screw made of steel and finished in zinc. It has a pan head with a six lobe drive and an internal tooth washer. This screw is designed for use in applications where a strong, secure hold is required. The internal tooth washer helps to prevent the screw from loosening over time.