Ads
related to: robertson screws vs square driveebay.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
The internal-drive square socket for screws (as well as the corresponding triangular socket drive) had been conceived several decades before the invention of the Robertson screw and driver. An earlier patent covering both square-socket- and triangle-socket -drive wood screws, U.S. patent 161,390 , was issued to Allan Cummings of New York City ...
The Phillips/square screw drive, also known as the Quadrex, Pozisquare screw drive, is a combination of the Phillips and Robertson screw drives. While a standard Phillips or Robertson tool can be used, there is also a dedicated tool for it that increases the surface area between the tool and the fastener so it can handle more torque.
Peter Lymburner Robertson (December 10, 1879 – September 28, 1951) was a Canadian inventor, industrialist, salesman, and philanthropist who popularized the square-socket drive for screws, often called the Robertson drive. Although a square-socket drive had been conceived decades before (having been patented in 1875 by one Allan Cummings of ...
Robertson, also known as a square, [15] or Scrulox [16] screw drive has a square-shaped socket in the screw head and a square protrusion on the tool. Both the tool and the socket have a taper, which makes inserting the tool easier, and also tends to help keep the screw on the tool tip.
securing a 3.5-inch hard disk drive to the case; holding an expansion card in place by its metal slot cover; fastening case components to one another; usually, one or more #6-32 UNC screws hold the main cover on the case; They are almost always provided with a #2 Phillips drive. Sometimes a Green Robertson or Torx drive is used instead. All ...
Based on examinations of modern square drive screws and screwdrivers made in and for the United States' market the description of the square-drive head is not accurate. Robertson head, invented in 1908 by P.L. Robertson, has a square hole and is driven by a special power-tool bit or screwdriver. The screw is designed to maximize torque ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
On a shaft, this may be simply a flattened area. A set screw may have any type of drive, such as hex or square head, slot, or recessed --- cross (Phillips), hex (Allen), star (Torx), or square (Robertson). In the UK, the term "set screw" or "setscrew" refers simply to a bolt which is fully threaded, with no smooth shank; called cap screw in the US.
Ads
related to: robertson screws vs square driveebay.com has been visited by 1M+ users in the past month