BWG4-20 Diameter Common Round Iron Wire Nail with Checkered Head Materials: Q195,Q235 Head: Flat head common nails Shank: smooth shank Point: diamond point Shank Diameter: 4BWG~20BWG. Length: 3/8"to 7" or according to your request. Treatment: bright ...
Spacing between rows of fasteners a3 Distance between the last column of fasteners and the loaded edge of the timber element a4 Distance between the side row of fasteners and the edge of the timber element b Width of a timber member bc,bnet Width between the two lateral row of fasteners (...