tools - How is a Phillips screwdriver size determined? - Home ...
The Phillips screwdriver size is based on the size at the very tip. Based on diagrams of the tip from the original Phillips patent (shown in one of the links to sizes.com), I'm guessing that the relevant physical size is the cross you see when you point the screwdriver at your nose (as though it were a screw) and look at it end-on, or something ...
How can I remove a Philips screw with a stripped head?
If you can grab the edges of the screw head with a locking pliers (such as Vise-grip), you can twist the screw out. If not, you can use an electric drill to remove thw whole screw head. Choose a bit that is slightly larger than the screw shaft (check one of the other screws you removed). Drill straight through the middle of the damaged screw slot. The border of the screw head will fall …
What is the purpose of this inverted Philips head screwdriver bit?
The bit that you are asking about is what is called a "concave Phillips" or "inverted Phillips" bit. They are used for removing screws that look like this: (picture found at ebuy7.com) The cross pattern on the screw head is actually raised.
tools - Why are there so many different types of screws …
Shamelessly ripped off from here, looks like the primary reason why we still have "bad" screws (flat head and Phillips) is that the "better" types of screws are simply more difficult/expensive to manufacture: The reason for the different styles is cost and torque. The slotted head screws are cheap and easy to make. But they're completely useless for powered screwdrivers and you …
How to avoid stripping screw heads? - Home Improvement Stack …
2018年7月24日 · If they are tight, I try using a regular Phillips head screwdriver with the size (#1, #2, or #3) to match the screw. And, if it loosens, I then use that screwdriver, the battery operated one, or a drill, depending on how many screws there are to remove.
Why does my drill bit destroy the screw head?
2015年3月10日 · 1) The bit is worn out. Some bits last eons, others are worn out after 5 screws. 2) The bit is the wrong size. A Pillips bit must fit tightly into the recess in the screw head, with no "wobble room". 3) You're using the drill improperly, failing to apply enough pressure to the screw or "gunning" the drill too much. (Or it's simply not a good tool for driving screws.)
removal - How can I remove a really stuck screw? - Home …
If the screw stripped before the screw started coming out, I drill straight down on the head with a bit slightly larger than the head to remove the head, oull the board up over it, and then use the drill chuck to remove it.
Need help identifying "pre-stripped" Phillips screw
2021年7月8日 · The screws look like a regular Phillips head but have the center rounded out. This makes a normal Phillps head screwdriver slip as if the screw was already stripped.
Allen key bolts vs Phillips head make a difference?
2020年7月29日 · A Phillips head bolt can be more difficult to drive tight than one with an Allen (or hex) head, because the screwdriver will easily slip out of the screw when resistance increases. The way the hex key fits in to an Allen bolt will prevent it from slipping. However, NoSparksPlease's comment about thread pitch is probably your main issue.
How to unscrew screws that are barely accessible?
2012年12月10日 · I need to remove the face of a fake drawer that is screwed from behind. Unfortunately, a kitchen sink is preventing me from using a screwdriver. There is approximatively 4cm of space. The screw hea...