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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024


    Kirt Blattenberger,


RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Screws: Styles, Sizes and Shapes
November 1960 Popular Electronics

November 1960 Popular Electronics

November 1960 Popular Electronics Cover - RF CafeTable of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from Popular Electronics, 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 - RF Cafe

Standard Types of Screw Driver Bits and Screw Openings

Standard Metal Screw Styles - RF Cafe

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 - RF Cafe

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) - RF Cafe

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 - RF Cafe

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) - RF Cafe

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 shown.

Courtesy or Vaco Products Company, Chicago, Ill.



Posted May 25, 2014

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