Grade 5/8/L9 Allen Key Drive Flat Socket Cap Head Bolt Screw

Product Description

Flat Socket Head Cap Screw

 

Type:	Flat Socket Head Cap Screw
Definition:	What is a flat socket cap screw? Flat Socket Head Cap Screws are threaded fasteners with a head that is tapered on bottom and flat on top. Flat Socket Cap Screws are designed to be used with a countersunk hole that matches the taper of the head and to sit flush on the mating surface.
Description:	What is the difference between socket countersunk head cap screw and flat head screw? Tensile strength is not the only consideration. Flat and button head socket screws have a smaller internal drive than a standard socket head cap screw. This reduces the amount of torque that can be applied before either the drive bit breaks or the internal drive is damaged. Lower torque means a lower clamp load.
Application:	The two most commonly used machine screw types have either coarse or fine threads. Coarse threads are better suited to quick and dirty applications, while fine threaded screws are better for precise products. The most common types of machine screw head shapes are pan head, flat head, round head, oval head, truss head and hex head. While round heads are probably used most often, flat heads are particularly useful when the screw needs to be flush with the surface it's screwed into.
Others:	The American Society of Mechanical Engineers (ASME) defines machine screws as featuring a diameter of up to 0.75 inches. They can be smaller than 0.75 inches in diameter, but they can't be larger than this size.
Feel Free to contact us if you have any questions.