M12 x 40 Coach Screws Zinc Pack of 4

M12 x 40 Coach Screws Zinc Pack of 4

• Applications industrial applications where maxium strength is required.As a rule of thumb, the pilot hole diameter needs to be half the diameter of the coach screw when using softwood and three quarters when using hardwood. So for example when using an 8mm coach screw the pilot hole needs to be 4mm for softwood and 6mm for hardwood.
• Corrosion resistant not sutable for a marine enviorment
• ideal for strong fixing together many specs of metal plastic or wood,
• Designed for use with wrench or sockets and offers maximum torque
• Surface treatment with a verzinkung corrosion and liquid oxidations Gel Protection.