grub conical screw M3 M4 head Din 916 1/4-20 3/8-16 Brass Copper Zinc Fine Tooth Slotted

Din 916 1/4-20 3/8-16 M3 M4 Stainless Steel Brass Copper Zinc Fine Tooth Slotted Flat Point Grub Hexagon Socket

 conical screw, also known as a cone screw or conical head screw, is a type of fastener that features a conical or tapered head. The head of the screw gradually tapers to a point, resembling the shape of a cone.Conical screws are typically used in applications where flush mounting or a streamlined appearance is desired. The conical head allows the screw to be countersunk or recessed into a material, creating a flush surface. This helps to prevent snagging, provides a smoother finish, and reduces the risk of damage or injury from protruding screw heads.To install a conical screw, a countersink hole is first drilled or machined into the material to accommodate the tapered head. The screw is then inserted into the hole and tightened, allowing the conical head to sit flush with the surface.