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This type of screw head is commonly used in the manufacture of mobile homes and recreational vehicles. [66] The clutch head was designed to be driven either with a flat-blade screwdriver or a clutch driver; but the screws are tamper-proof and secure, and cannot be unscrewed with a normal slotted screwdriver. [65]
The clutch is the component that defines a torque screwdriver. This is achieved with steel balls rolling between indented plates, compressed by a spring at one end, and the other side driving a screw or fastener.
A socket cap screw, also known as a socket head capscrew, socket screw, or Allen bolt, is a type of cap screw with a cylindrical head and hexagonal drive hole. The term socket head capscrew typically refers to a type of threaded fastener whose head diameter is nominally 1.5 times that of the screw shank ( major ) diameter, with a head height ...
I believe the characterization of the clutch head bit as "one way" is erroneous. One way screws are actually designed to be installed by slot drivers. Clutch bits are an entirely different sort of beast as can be seen here, and here. I believe this misnomer comes from similarity in the shape of the clutch bit and the seeming shape of the ...
Robertson screwdrivers are easy to use one-handed, because the tapered socket tends to retain the screw, even if it is shaken. [3]: 85–86 They also allow the use of angled screwdrivers and trim-head screws. The socket-headed Robertson screws are self-centering and reduce cam out. They also stop a power tool when set, and can be more easily ...
The tool used to drive a slotted screw head is called a standard, common blade, flat-blade, slot-head, straight, flat, flat-tip, [6] or "flat-head" [7] screwdriver. This last usage can be confusing, because the term flat-head also describes a screw with a flat top, designed to install in a countersunk hole. Before the development of the newer ...