Made of 305 grade stainless steel with a T20 drive

A square head screw threaded the entire length

The 1/4-28 x 8 inch Hex Washer Head is guaranteed to stand up to any tough job

Rely on the strength of 0

9 x 1 1/2 Simpson Metal-Panel Screw - Hex Drive w/ EPDM Washer 316 SS - Carton (1000)

3/16 x 3 1/2 Simpson Mushroom Head Crimp Drive® Anchor Zinc Plated Carbon Steel - Box (100) Simpson ETB Nylon Hole-Cleaning Brush — Standard Made of 305 grade stainlessThis 3 16 x 3 1 2 Simpson Mushroom Head Crimp Drive Anchor is made of zinc plated carbon steel and comes in a box of 100. Its mushroom head design provides excellent holding power to support heavy objects securely. It is ideal for use in concrete and masonry applications.