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Japan KAMIYAMA TEKKOSHO Develops "Reverse Bit Drilling Screw" to Eliminate Jack Up Problem

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2013-11-01

The company developed "Reverse Bit Drilling Screw" that eliminates the common problem where the base material jacks up during fastening. The product is patented under patent No. 5342996 "Fastening Method of Construction Screws & Related Fastening Tools". The drill bit of the product is reversely formed compared with average drill bits. When fastening with electric drillers, one has to first left rotate the screw to drill a leading hole on the base material. When approaching the threaded part of the screw, one will then right rotate the screw to fasten it.

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