A Simple Machine for making large (2 1/2″) diameter wooden screws

Screw - Wikipedia

5 Essential Types of Screws Every DIYer Should Know - Bob Vila

Simple machine Definition, Types, Examples, List, & Facts

Making A Box Joint Jig For A Tablesaw

Wood Screws at Ace Hardware - Ace Hardware

Hillman #6- 32 x 2-1/2-in Slotted-Drive Machine Screws (15-Count

A Simple Machine to make large diameter wooden screws – cont'd

Screw - Simple machines - Physics - Study Guides

Machine screws are meant to apply two metal work pieces together, with the use of a threaded pre-tapped hole or through a hole and held with a nut. They are threaded the entire length of the shank. The length of a machine screw is measured from under the head to the point of the screw.

Hillman #6-32 x 1-1/2-in Phillips-Drive Machine Screws (10-Count)

Machine screws are fully threaded fasteners with a uniform diameter the entire length of the shaft. They are primarily used to fasten metal parts

1/4 in.-20 x 1/2 in. Phillips Flat Head Brass Machine Screw (25-Pack)

Wood Screws at Ace Hardware - Ace Hardware

A Simple Machine to make large diameter wooden screws – cont'd

#6 x 2-1/2-in Zinc-Plated Interior/Exterior Wood Screws (8-Per Box)

Hillman #6 x 2-1/2-in Zinc-Plated Interior/Exterior Wood Screws (8-Per Box)