Yes, TAPTITE 2000® fasteners can be reused repeatedly in a tapped hole, and still retain a level of resistance to vibrational loosening. Yes, a TAPTITE 2000® fastener requires more torque than a machine screw due to the fact that the screw forms its own threads in an untapped hole eliminating the need and extra cost of pre-tapping.

Many millions of zinc parts are held together by screws with no problem at all. Because zinc has a low coefficient of friction it is often useful to use either a "star" washer or to serrate the underside of the screw head to prevent it unscrewing, particularly if the parts are subject to vibration. If the design requires maintaining a minimum tensile stress in the screw and temperatures are likely to be above 1500 F, there is a possibility that stress relaxation could occur. See similar questions...

Screws cannot be hot-dipped galvanised but are generally available in stainless steel. There are other types of coated deck screws on the market for decking. See similar questions...

The small hole in the back is something I started adding in 2001.  It is a second sound-hole that adds to the overall quality of the sound.  It is not a finger hole used to hold the psaltery.  When the psaltery is held properly your hand should be cupped to prevent coming into contact with the thin  wood on the back.  It is just as important for this wood to vibrate as the soundboard.   See similar questions...

No, only trees that are stressed for various health reasons (for example, fungal disease or drought) will turn colors first. See similar questions...

Yes, the TAPTITE 2000® thread form was designed so that a 6g (metric) or a 2A (inch) standard thread form would fit within its envelope. See similar questions...

This is a tooling or locating hole and, in the finished knife, has no real function. The process goes something like this: we buy titanium in sheet form and cut it into rectangles approximately the size of the handle. We drill all the holes into this rectangle which is then placed onto a fixture, held secure by locating pins through these holes. The profile of the handle is then machined and the rectangle begins to look like the handle of a folding knife. See similar questions...

Any coated deck screws will do. There is no need to go to expensive stainless steel fasteners as is suggested with the new formulae of pressure treated wood. If using nails, be sure to use galvanized to prevent rusting. See similar questions...

If the screws have a star shaped head, but not hollow, these will ned FEMALE TORX bits to remove them. Some toasters ans other small appliances are starting to use these now, instead of the normal TORX screws. Try one of the following links for bit sets (look for sets with E numbered bits): http://www.toolfinder.co.uk/catalog/advanced_search_result.php?keywords=torx&search_in_descr iption=1&gclid=CJ_45vry2IECFUFDGgodph68xg See similar questions...

The upper layer protocols have not been specified in the RedTacton system. .So highly secure communication is possible by combining the system with encryption and other procedures. See similar questions...

Suppose you made a hole too large to hold the screw. So far, the best method we have found to fill holes is by using a plastic wood fill product. If you can use a wood fiber rawl plug with the plastic wood, it will save time later. Remember to let the plastic wood dry thoroughly. See similar questions...

Yes, the TAPTITE 2000® thread form was designed so that it would fit the envelope of a 6H (metric) or 2B (inch) nut member. Although TAPTITE® fasteners are designed to form internal nut threads at assembly, there are circumstances where TAPTITE® fasteners are used in pre-tapped nut members. See similar questions...

Use hot-dipped galvanized or stainless steel nails with a 3/16" head diameter, long enough to penetrate 1-1/4" into structural framing members. Power nailing systems are allowed when the fasteners are equal in performance (such as nail withdrawal, bending strength and corrosion resistance) to the standard galvanized nails with 3/16" head diameter, and long enough to penetrate 1-1/4" into structural framing members. See similar questions...

Assy Screws offer a high-tech asymmetrical/symmetrical double thread design. The patented AW-drive design combines all the advantages of Phillips, Torx, and Pozi drive bits. The AW-drive is similar to a Torx, but it is tapered, which gives you more contact points inside the head of the screw - enabling accurate screw placement and the “No Come-Out” design prevents screw head damage. The screws also go through an additional annealing process which makes them more malleable. See similar questions...

There are five hamstring tendons. I use two. The remaining three compensate by getting stronger and there is some evidence that the two tendons regrow so you won't miss them. See similar questions...

To our knowledge there are no studies concerning UV-B effects on penguins. As their eyes are exposed to a lot of UV due to the high reflectivity of snow and a marked enhancement during the ozone hole, investigation into the impact on penguins is desirable. The fact that penguins are visual predators, eating krill or fish in the water column, would make any eye damage an important issue for survival. See similar questions...

The human body has a great capacity to stretch. The holes can stretch quite easily whiteout any harm to the body. In a way, it is similar to child birth. See similar questions...

Problems associated with a hole in the eardrum (eardrum or tympanic membrane perforation) will vary from one person to the next. Some may notice considerable hearing loss while others will notice none. Some people with eardrum perforations will experience frequent ear drainage while others notice very little. Everyone with an eardrum perforation will need to be careful to not get water in the ear. See similar questions...

The Big Bang is really nothing like a black hole. The Big Bang is a singularity extending through all space at a single instant, while a black hole is a singularity extending through all time at a single point. For more, see the sci.physics FAQ. See similar questions...