Also known as self tappers.
I don't get it. They don't tap in by themselves. What's so special about them.
And they are supposed to be pricier than other screws.
Thanks.
2007-04-11 17:08:12 · 9 answers · asked by Joe Bloggs 4 in Home & Garden ➔ Maintenance & Repairs
they make putting the screw in a lot easier. You don't have to pre-drill a hole to get the screws in to metal that may be a little heavier. trust me they are great
2007-04-11 17:18:27 · answer #1 · answered by pipedreams 2 · 1⤊ 1⤋
The window should have a Header, that sits on top of a trim stud which is attached to the king stud, so from the window over you will have at least 3 inches of wood to screw into, and from the window up, your header will be at least 6 inches tall, and thats solid wood, If the window span is long, like ten feet, the header will be even taller. So recap: youve got 3 Inches to the side and at 6 inches off the top with NO electrical to worry about. If you are hitting a metal plate, five inches to the side of the window, It could be anything, A strap or a nail-plate. I suggst you move up or down or closer to the window. Find the edge of the plate and secure there because the plate should only be an inch and a half or two inches tall. Good Luck with moving the location in.
2016-05-17 23:51:21 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the reason they are called self tapping is because ..in normal use if you want to put in a normal screw which is not self tapping then you would have to drill a hole and then tap in a thread for the screw to connect to ..you would have to have a tap and die set ..but with the self tapping screw you just drill a hole ..in steel ..not necessary in wood ..but still best to drill a small hole to prevent the wood from splitting ..then the screw makes it own thread to grip without the use of the tap set
2007-04-11 20:45:04 · answer #3 · answered by boy boy 7 · 1⤊ 0⤋
The engineering method of cutting a thread (like in a nut) is known as 'tapping'.Requires the use of a tool called a 'Tap' . A "Self Tapping Screw" will cut a thread in thin metal without the use of a tap, hence the name. They are alot tougher than a 'normal' woodscrew, hence the cost difference.
2007-04-11 20:42:54 · answer #4 · answered by johncob 5 · 1⤊ 1⤋
Self tapping screw will tap in by them self if you are using them in the proper application. The idea is that they drill the hole the right size and then they thread them self. It depend mainly on the application you are using them on as to how well they work. On solid application I have had to predrill the hole first in order to make them work. If this is the case you will need to drill the hole deeper than the length of the screw in order to give the material a place to escape to.
2007-04-11 17:18:56 · answer #5 · answered by edj009 3 · 1⤊ 1⤋
A self tapping screw is usually used for metal working, joining 2 pieces of metal, as it makes it own hole and treads as it is driven into the metal.
2007-04-11 17:20:53 · answer #6 · answered by gentleretiredworshipper 4 · 1⤊ 0⤋
problematic point. lookup with yahoo. just that could help!
2014-11-25 19:38:48 · answer #7 · answered by Anonymous · 0⤊ 0⤋
you still need a pilot drill to fix the screw in, a better screw is a screw known as a tap tight. it has a self drilling leading edge. the screw head itself is usually a 6-8mm nut. but its a good idea to again drill a pilot hole.
2007-04-12 00:01:50 · answer #8 · answered by Anonymous · 1⤊ 2⤋
No need to pre-drill, also a tighter more secure fit therefore less chance of stripping the thread.
2007-04-11 17:22:20 · answer #9 · answered by pieterclassens 1 · 1⤊ 0⤋