Simpson's Zinc Nailon™ Anchor is crafted of 304 stainless steel

5/16-18 x 3 Grade 5 Hex Cap Screw Plain Domestic USA (100)

made of high-grade 305 stainless steel (#2 Square)

1/4-20 x 3 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100)

1/2-20 x 3 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (200)

5/8-18 x 1 3/4 Socket Head Cap Screws Thermal Black Oxide Alloy Steel Domestic USA - Bulk (250) 9/16-18 Socket Cap Screws Alloy Simpson's Zinc Nailon™ Anchor is5 8 18 x 1 3 4 Socket Head Cap Screws Thermal Black Oxide Alloy Steel Domestic USA Bulk (250) Socket Cap Screws with Thermal Black Oxide finish are made in the USA from durable alloy steel for superior strength and reliability. Featuring a hex drive and corrosion resistant coating, ideal for high performance and structural applications.