Round-head screw
Standard: DIN 7380-1
Dimension: M 4 x 20
Material: Steel zinc plated
Strength class: 10.9
Drive: Hexagon socket
Also known as:
Button head screw, Half round head screws, flathead screws, Round-head screw, Lense screws, with hexagon
(The article photos are examples and reflect the shape and color. Dimensions and material may different. The article description applies.)
Button head / Pan head screw ISO 7380 -1/-2 with hexagon socket
ISO 7380-1 with normal button head , ISO 7380-2 with button head with flange
Mit Regular thread. The pitch is therefore not stated explicitly.
Dimensions (
Drawing see above):
s = wrench size
k = height of head
dc = diameter of head (-2)
dk = diameter of head (-1)
