Matches 1 - 9 out of 9

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US20090232619 Self-drilling screw  
A self-drilling screw (10) has a thread-carrying shaft (11), a head (15) provided at one of its ends, and a drilling tip (12) provided at another of its ends, opposite the one end thereof, with...
US20080124188 Concrete Screws  
The present invention pertains to a concrete screw comprising a threaded portion with threads spirally disposed thereon and a helical conveying portion. In particular, the outer diameter of the...
US20090028665 HIGH SCREWING SCREW  
The present invention pertains to a screw notably comprising a shank with a plurality of flat surfaces; wherein, a lip is defined by the junction of any of two adjacent flat surfaces, and a rib...
US20090269163 SELF-TAPPING SCREW  
A self-tapping screw comprises a self-tapping screw having a screw rod; one end of the screw rod being a head and another end thereof being a drilling head; the drilling head having two extending...
US20130089390 STRUCTURE OF SELF-DRILLING SCREW  
A self-drilling screw includes a head having a circumferential surface around which a helical thread is formed and a body mounted to the head. The body has an end forming a cylindrical chisel tip...
US20150147137 SCREW FOR COUPLING WOODEN MEMBERS TOGETHER  
There is provided a screw for fastening a wooden member which includes: a shank that extends along a datum line; a head that is disposed at an end of the shank and has a plate portion having a...
US20100119327 SELF-DRILLING SCREW WITH MULTI-DRILLING PORTIONS  
A self-drilling screw with multi-drilling portions mainly comprises a shank, a head and a drilling portion separately disposed on both ends of the shank, and a thread section spiraled on the...
US20160305463 DRILL POINT FASTENER  
A fastener may include an elongated shank, a head at a distal end of the shank, and a drill point at a terminal end of the shank, which is opposite to the distal end. The fastener may include a...
US20160032956 FASTENING BOLT FOR USE IN CONCRETE  
A fastening bolt includes a shaft defining a central axis, a head, a drilling portion, and first threads alternating with second threads. The first threads and the second threads have different...
Matches 1 - 9 out of 9