120pcs M4.2 Self Tapping Flat Head Screws 410 Stainless Steel Full Thread Dovetail Drilling Tail Screws(black, silver)

1.【Quality Material】：These self drilling screws are made of high-strength 410 stainless steel, durable, anti-corrosion and rustproof. Deep thread design prevent the screw from slipping. 2.【Package Information】：Package including 20pcs silver M4.2 * 13mm, 20pcs silver M4.2 * 19mm, 20pcs silver M4.2 * 25mm, 20pcs black M4.2 * 13mm, 20pcs black M4.2 * 19mm, 20pcs black M4.2 * 25mm，and 1 storage box. 3.【Wide Application】：Flat head self-tapping screws are mainly used for in steel structure color steel roofing, colour steel watt fixing, or simple structure fixing plates. Widely used in household and office appliances, wood furniture, maintenance, installation and invention. 4.【Deep Thread Design】： With deep and clear thread, these phillips head self drilling screw can easily penetrate metal steel without deformation or sliding. 5.【Storage Box】：The screws of different specifications placed orderly in clearly classified storage box.Easy to find and use. Prevent loss.