Fuller Taper Point Hex Shank Drills are designed to pre-drill holes in wood to accept the thread and shank portion of standard wood screws. Quick-Change Taper Point Hex shank drills, when used with the Fuller Quick Release Chuck Adapter, make switching out drill sizes quick and simple.
The Hex Shanks can be used in conjunction with Fuller countersinks and counterbores, and are made from industrial quality US High Speed Steel. Has 1/4" Hex Power Groove Quick Release Shank.
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Taper Point Drills were engineered to pre drill pilot holes for the shank and threaded portion of wood screws. The object is to use the proper size drills and drill to the proper depth to insure the best holding power from the wood screw. This is critical when the fastened joints have to support a heavy weight or pressure such as when fastening planks to form the hull of a boat. A less critical application would be fastening a wood floor in a house or building cabinets.
The clearance hole though the wood being fastened should be as close to the diameter of the shank of the wood screw as possible. If the clearance hole is too small, the shank of the screw could bind in the hole causing the screw to tighten before reaching its maximum pulling force in the wood being attached to or even breaking. If the clearance hole is bigger than the shanks of the screw, the wood could move which could cause squeaks, wear and leaks. Space around the screw could also collect moisture causing premature corrosion or rotting depending in the materials involved.
The pilot diameter for the threaded portion of the screw is even more important. It determines how well the screw holds its grip on the wood it is being fastened to and how long it will maintain that grip. Generally, the diameter of the drill used to pre-drill for the threaded portion of a wood screw should be the same size as the root diameter of the screw.
can i get a hex shank 7/64 tapered drill bit?
Peter,I have bought and used these drill bits as part of a set for drilling and countersinking and they are terrific and have served me very well. They come in 5 sizes in the set, for #6 Wood Screws, for #8, then #10, 12 nd 14 screws. I had to buy a replacement bit for my #8, since I broke it....my fault. I do not know the diameters of the bits as they are advertised for the screw size they are meant to accomodate, not the drill bit size. Sorry I cannot be of more help. The bits are great and have served me very well in drilling and countersinking countless holes. Fuller makes a quality product line. Jamestown should be able to provide you with specific product information as to drill bit diameters, etc.
Peter,W.L. Fuller, Inc. does make a 7/64" taper bit which can be fitted to a TPS-Lock system 1/4" hex power shank.7/64"Tapered Drill with TPS-Lock Fuller part# 20140109
BEst I can tell, that size is not offered in the hex shank.Here is the URL to them.< a href="http://www.jamestowndistributors.com/userportal/show_product.do?pid=468&familyName=Fuller+Taper+Point+Hex+Shank+Drills" target="_blank">http://www.jamestowndistributors.com/userportal/show_product.do?pid=468&familyName=Fuller+Taper+Point+Hex+Shank+Drills< /a>
What can you say, they're Fullers and they work great. I find it much more efficient with the hex shank and the quick change.
Are the hex shanks crimped onto the drill bit, or are they held on with a set screw so that if the bit breaks the hex holder can be reused?
Thanks Andrew, Patrick also answered. It has been a number of years since I purchased these and the old ones were crimped. Thanks again for the info and the super fast response.
They are held on with set screw.
the drill bit is not removable from the hex shank
The hex shank itself is a separate piece of hardware using a set screw as per the question. So, yes if the bit breaks it can be replaced in the same hex shank or if you wanted you could use a regular straight bit in the shank a well.
The bit is held in place with a set screw and replaceable.
If you mean the collar that you set to drill the hole to the depth you require. This is held on with a set screw and can be transferred to another drill. I use these with a counter sinker so the screw is countersunkand fits snugly. I hope this helps
They are held in w set screw.
"I lost my tool, need a replacement now"
This product is the best, all other brands break, don't perform well and constantly need replacement.Not with Fuller products, the only reason I needed to replace this tool, was not from wear, but from it falling out of my tool belt pouch.