Fastener

Item No.: Screw
A screw is a type of fastener, in some ways similar to a bolt, typically made of metal, and characterized by a helical ridge, known as a male thread (external thread).
Description Review
Description
Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull fastened materials together and prevent pull-out. There are many screws for a variety of materials; those commonly fastened by screws include wood, sheet metal, and plastic.

DIN 965 cross recessed countersunk flat head screws.DIN 965 phillips flat head machine screw.flat head 90 degree screw.A countersunk head with a flat top surface and a cone-shaped bearing surface with a head angle of approximately 90° DIN965. Used in applications where protrusion of the fastener above the mating surface is unacceptable. Use a protrusion gage when measuring head height.

DIN 7985.ISO 7045  Cross recessed raised cheese head screws.Metric DIN 7985 are cross recessed (Phillips) raised cheese head (Pan Head) machine screws. Machine screws are externally threaded fasteners designed to be mated with threaded nuts or tapped holes in the parts they are designed to hold together. DIN 7985 cross recessed (Phillips) raised cheese head (Pan Head) machine screws can be used for many applications. Dimensional data and technical information for metric DIN 7985 cross recessed (Phillips) raised cheese head (Pan Head)machine screws was obtained from publicly available sources and not acquired through standards agencies. DIN 7985 Pan Head machine screws can be used for many applications. The pan head has a slightly rounded top surface and a flat bearing surface underneath. This head style is ideal for most applications where a protruding head is acceptable





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