Our low head screws located here are all in U.S. sizing, or inches. We offer two head types: low head socket and socket cap. Make sure to choose the right option for you! All our low head screws come in alloy steel with black oxide, so you can trust that they will be both durable and lasting. With sizes ranging from #6-32 to ¼-20 and beyond, you can be sure that we offer the right fit for your needs. Shop Monster Bolts today for all the screws, bolts, nuts, and anything else you could need! Contact us with questions.