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Step 29Appendix
Terms
Camout (or cam-out) is a process by which a screwdriver slips out of the head of a screw being driven once the torque required to turn the screw exceeds a certain amount. Frequently, camout damages the screw, and possibly also the screwdriver, and should normally be avoided. However, the Phillips head screw and screwdriver combination was designed specifically to cam out, as at the time of its invention torque sensing automatic screwdrivers did not exist.
Phillips is a trademark used for a screw with a head having two intersecting perpendicular slots and for a screwdriver with a tip shaped to fit into these slots.
Recess refers to the shaped socket into which a driver can be inserted
End-Load is the force required to keep the bit to not camout. Low end-load is usually most desirable.
References
History of Screws and Screwdrivers, by Mary Bellis, About.com
Phillips Screw Company; www.phillips-screw.com
Phillips or Pozidriv? Healey Magazine, Feb 1996
Semblex Corporation; www.semblex.com
Why did this guy Phillips think we needed a new type of screw? by Adams, Nov 24 1989
Assembly Technology Buyer's Guide, Wheeling, IL, Hitchcock Publishing, annual.
Collections Canada; www.collectionscanada.gc.ca/cool/002027-150-e...
A New Design of Screw Head by Brian Rooks, Assembly Automation Vol 21-4, 2001
Furniture screws: primitive to gimlet by Fred Taylor, Discover Mid-America - Aug 2007
S.C.F. Fasteners, Taiwan; www.scffastener.com/main/products/specialS.html
Robertson Screws by Ricketts, www.mysteriesofcanada.com/Ontario/robertson_screws
www.thestuccocompany.com/maintenance/Phillips-vs-roberts-138476- by Chris Lewis
Hands-On: LOX Screws by Chuck Cage; www.toolmonger.com
http://scholar.lib.vt.edu/theses/available/etd-42698-205111/unrestricted/chapter_2.pdf
http://www.emeraldinsight.com/10.1108/01445150110407322
Uni-Screw Worldwide, Inc; www.uniscrewworld.com
Discussion Groups;
Google Answers Researcher by Tutuzdad ?, Jun 10 2004
Re: star vs square drive; http//forums.jlconline.com/forums dave_k Veteran Contributor
http://boards.fool.co.uk/Message.asp?mid=11161184&sort=whole; Julian F. G. W.
http://www.electronicspoint.com/torx-hex-star-bits-t39076.html; Fred Abse
Instructables feedback of article by contributor ironsmiter
Camout (or cam-out) is a process by which a screwdriver slips out of the head of a screw being driven once the torque required to turn the screw exceeds a certain amount. Frequently, camout damages the screw, and possibly also the screwdriver, and should normally be avoided. However, the Phillips head screw and screwdriver combination was designed specifically to cam out, as at the time of its invention torque sensing automatic screwdrivers did not exist.
Phillips is a trademark used for a screw with a head having two intersecting perpendicular slots and for a screwdriver with a tip shaped to fit into these slots.
Recess refers to the shaped socket into which a driver can be inserted
End-Load is the force required to keep the bit to not camout. Low end-load is usually most desirable.
References
History of Screws and Screwdrivers, by Mary Bellis, About.com
Phillips Screw Company; www.phillips-screw.com
Phillips or Pozidriv? Healey Magazine, Feb 1996
Semblex Corporation; www.semblex.com
Why did this guy Phillips think we needed a new type of screw? by Adams, Nov 24 1989
Assembly Technology Buyer's Guide, Wheeling, IL, Hitchcock Publishing, annual.
Collections Canada; www.collectionscanada.gc.ca/cool/002027-150-e...
A New Design of Screw Head by Brian Rooks, Assembly Automation Vol 21-4, 2001
Furniture screws: primitive to gimlet by Fred Taylor, Discover Mid-America - Aug 2007
S.C.F. Fasteners, Taiwan; www.scffastener.com/main/products/specialS.html
Robertson Screws by Ricketts, www.mysteriesofcanada.com/Ontario/robertson_screws
www.thestuccocompany.com/maintenance/Phillips-vs-roberts-138476- by Chris Lewis
Hands-On: LOX Screws by Chuck Cage; www.toolmonger.com
http://scholar.lib.vt.edu/theses/available/etd-42698-205111/unrestricted/chapter_2.pdf
http://www.emeraldinsight.com/10.1108/01445150110407322
Uni-Screw Worldwide, Inc; www.uniscrewworld.com
Discussion Groups;
Google Answers Researcher by Tutuzdad ?, Jun 10 2004
Re: star vs square drive; http//forums.jlconline.com/forums dave_k Veteran Contributor
http://boards.fool.co.uk/Message.asp?mid=11161184&sort=whole; Julian F. G. W.
http://www.electronicspoint.com/torx-hex-star-bits-t39076.html; Fred Abse
Instructables feedback of article by contributor ironsmiter
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