Product Feature: Material : carbon steel 1022 Surface treatment: Black/Grey phosphated, white zinc plated, yellow zinc plated Size : 3.5*16~4.8*160mm Thread: Fine thread, coarse thread Point: Sharp point, drilling point Head: Pan framing head, bugle head  Advantage: High hardness High and low temperature resistant Multicolor choose Competitive Price Superior Quality, TUV CERT ISO9001:2000 quality assurance Artificial stone without any radiation Punctual Delivery? Supply wooden pallet Meet different market’s need: America, Europe, Asia, and so on. Widely used in wood furniture, construction and so on