A coarse-thread drywall screw has a reasonably sharp tip that makes for fast cutting into softwood lumber. $10.99 The sheetmetal screw is an inexpensive and multi-purpose fastener that excels at ...

I’ve done smooth holes myself for the most part, and for extra fine threads you can’t really print them anyway, but when you are cutting that larger thread as you drive in the metal screw to a ...

In the store, look for the thread type printed on the box. Buy "coarse thread" screws long enough to go through the drywall, at least 58 in. into the stud. Drywall-to-Metal ...

Screw threads are another simple machine, and can be thought of as a long, ... The Acme profile is also found in the lead screws of most metal lathes because it works well with split nuts.

Sheet-Metal Screws Jan. 11, 2007 Lo-Drive Thread Rolling and Grip-Lite screws, designed for thin sheet-metal applications, offer increased strip-out torque and a radius point for safety.

Roy Underhill shows how to use an 1889 foot-driven metal working lathe. Make your own darn metal screws with this 1889 foot-powered lathe! Roy shows how to cut perfect threads, cones and tapers in ...

They can be made out of plastic, metal, or a combination of the two, with a metal thread and a plastic head. Thumb screws are limited in how much torque they can achieve.

Matching a replacement screw or bolt can be a headache given the number of sizes and threading pitches you can find in even a modest hardware store. Mate the old and new for a perfect match ...

Precise moves depend on ball-screw threads May 5, 2005 The degree to which a ball screw performs well in the field is the direct result of the process used to make it.

Anybody have a definitive answer on what size pilot hole I should drill in the side of my truck bed to attach tie down hooks using #10 sheet metal screws? I'm thinking 7/64 or 1/8 but I'd like to ...

Sheet metal screws are known as self-tapping fasteners because they cut their own threads into the material (aluminum or plastic), and you don’t need to use a separate tool (called a tap) to do ...