Patent ID: 9587663
Date: 2017-03-07
CPC Classifications: F16B

Claim:
1. A threaded fastener for securing a first material to a second material comprising: a first end having a tapping point formed thereon for forming a threaded passage for said fastener through said first material and said second material; said tapping point being located at a tip of said fastener, said tip having an end diameter within the range of 0.210 to 0.190 inches, a threaded shank; a first portion of said shank, adjacent to said first end, having a length and having multiple separate leads and multiple separate threads formed thereon, a first lead being connected to a first thread and subsequent leads being connected to subsequent threads, the first and subsequent threads being separate from one another whereby the first thread is not connected to the subsequent threads and the subsequent threads are not connected to each other, the first and subsequent separate threads extending helically and continuously along the length of the first portion of the shank, said threaded shank having a diameter of 5/16 inches and said threads being arranged on said shank at a spacing to provide a range of about 16½ to 17½ threads per inch, a head at an end opposite said first end having an enlarged diameter for reducing the likelihood of pull through of said fastener through said first material and said second material, a second portion of said shank, distal from said first end, said second portion being unthreaded, the first and second portions of the shank being of a uniform diameter, and a drive recess formed in said head.