Dowel pins are used as inserts to help hold wood and plastic sections together. Parallel dowel pins have parallel sides instead of a taper to a narrower end. The United States, United Kingdom and International Standards Organization have each issued their own standards on parallel dowel pins.
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The American Society of Mechanical Engineers (ASME) issued standard B18.8.2 for the dimensions and designs of taper pins, dowel pins, straight pins, grooved pins, and spring pins. ASME standard B18.8.2 has also been adopted by the American National Standards Institute (ANSI) as ANSI B18.8.2-2000.
The British Standards Institute (BSI) has standards for parallel dowel pins based on the measurement system. BS 1804-1 is the general specification for parallel steel dowel pins in inches, while standard BS 1804-2 is the specification for parallel steel dowel pins built to metric dimensions. BS 1804-3 applies to metric parallel steel dowel pins with screw threads.
The International Standards Organization (ISO) standard 8735 applies to parallel dowel pins made from hardened steel with an internal thread. ISO standard 8733 applies to parallel dowel pins made from unhardened steel with an internal thread, while ISO 8734 describes parallel pins made from hardened steel but without any threading. ISO 2338 applies to steel parallel pins that are neither hardened nor threaded. Additionally, ISO Technical Committee 165 has created standards on how the yield stress and load of dowel pins in timber structures are determined.
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- "Machinery's Handbook Pocket Companion"; Richard Pohanish, et al.; 2000
- British Standards Institute: Engineering Committees: FME/009 Fasteners
- "The Mechanical Engineering Drawing Desk Reference"; Paul Green; 2007
- ANSI: ANSI/ASME B18.8.2-2000 Taper Pins, Dowel Pins, Straight Pins, Grooved Pins, and Spring Pins (Inch Series)