** other names: gypsum screws, plaster board screws, drop ceiling screws

**Material: carbon steel C1022 

**Feature: black(grey)phosphate/zinc coated; bugle head, Phillips type, fine thread(twin thread) / coarse thread, drilling point, hardened. 

**Size: dia: 3.5, 3.9, 4.2, 4.8(#6-#10)  length: 19mm-100mm 

**Usage: As fasteners, more and more widely used in hard wood, drop ceiling, furniture-making, gypsum board/plaster board decoration, sheet iron-machining, light steel joist and construction so on

**Package: small size: 1000pcs/box, big size: 500pcs/box ;20boxes/carton or in bulk or as you require

**Besides: we also manufacture chipboard screws, self tapping screws, self drilling screws, roofing nails, common wire nails, concrete nails, shoe tacks, tape measure, iron wire and so on.