These bolts are also known as fully-threaded Hex Cap Screws, and have a variety of uses in construction, agriculture and automotive applications. We carry a complete line of mild steel (zinc), Grade 5 (zinc) and Grade 8 (yellow zinc) . Available in coarse and fine thread, and in diameters 1/4" to 1" and up to length of 10”. Hex head tap bolts also available in stainless steel 18-8.