Material - Zinc Plated Steel. Grade - Grade R (8.8) High Tensile Steel. Type - Hexagon Head bolts & Fully Threaded Set Screws Diameters Available - 1/4", 5/16", 3/8", 7/16" & 1/2.Please select from the menus available your diameter then length and last pack quantity. Please note when selecting length some sizes we have fully threaded and part threaded in the same. (subject to terms & conditions, see below for details). Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first. We are dedicated to ensuring the highest possible quality service to our customers. This item is in the category "Business, Office & Industrial\Fasteners & Hardware\Screws & Bolts". The seller is "spalding_fasteners" and is located in this country: GB. This item can be shipped worldwide.