November 1960 Popular Electronics
Wax nostalgic about and learn from the history of early electronics. See articles
published October 1954 - April 1985. All copyrights are hereby acknowledged.
Sure, there are lots of resources on the
Internet for identifying various screw types, styles, shapes, and sizes, but sometimes there are so many that it can be time consuming to
peruse through them all, particularly if what you are looking for is an older type. This chart from a 1960 edition of Popular Electronics
might be just the thing you have been looking for when working on a piece of vintage electronic and/or mechanical gear.
Screws: Styles, Sizes and Shapes
Handy reference diagrams you can use
Standard Types of Screw Driver Bits and Screw Openings
Standard Metal Screw Styles
Metal screws are made in a wide variety of head styles, diameters, and lengths. Both stove bolts and machine screws are available in most
head styles in numbered sizes from 0 to 16 and in fractional-inch sizes from 1/4" to 3/4".
Wood Screw Styles
Wood screws are available in a wide variety of diameters-from No.2 to No. 8- and lengths of from 1/4" to 4".
Socket Screw Styles (Allen or Bristo Openings)
Socket screws come in numbered sizes from 4 to 10, inch sizes from 14" to 1 ", and in almost any length.
Self Tapping Metal and Sheet Metal Screws
Self-tapping screws are produced in virtually any thread style and virtually any head style in a variety of lengths. Either slotted or
Phillips type openings are available in sizes from No. 0 to No, 24.
Set Screw Styles (Head and Headless)
Set screws come in diameters from No.4 to 1", lengths from 1/8" to 3", Both headed and headless styles are available in the point types
Courtesy or Vaco Products Company, Chicago, Ill.
Posted May 25, 2014