DIN 571-Coach Screw |Manufacturers India
Coach wood screw with a hexagon head goes straight into wood or missionary with the primary use to fasten heavy timber into position like when installing gates or fences. To avoid the wood from splitting one should always drill a pilot hole for a coach screw. The hole should be 1/2 the coach screw diameter for softwood and approximately 3/4 for hardwood eg using an 16mm diameter coach screw it would be a 8 mm hole for softwood and 12mm hole for hardwood. Coach screw when fixed into timber we advise using a flat washer or square plate washer with a coach screw to avoid accidental breaking the screw head . A plastic plug can also be used when fixing in the masonary.
Coach screw manufacturers india
Bhalla Fasteners are top quality nut bolt manufacturer in Ludhiana. Produced with high precision and accuracy, the products are available for supply in USA. Bright zinc plated or yellow passivation is standard plating on coach screw for internal operations but for external environments they are also salt spray tested over 450 hours.
Steel Grades as per coach screw dwg
Finish Self, Black, Zinc electroplating, Hot dip galvanised, cadmium,chromate, Green passivation