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Hex bolts (six sided heads) are the industry standard for fasteners with forged heads. ASTM A307 grade A bolts, all SAE hex bolts, and several other common specifications require a standard (finished) hex head.

A ring split at one point and bent into a helical shape causes the washer to exert a spring force between the fastener's head and the substrate, which maintains the washer hard against the substrate and the bolt thread.

Machine screws have machine threads for use with a nut or in a tapped hole. Also referred to as a stove bolt.

A washer is a thin plate with a hole that is normally used to distribute the load of a threaded fastener, such as a screw or nut.

• Thickness0-5mm, 5-10mm
• ApplicationFittings
• Diameter0-10mm
• TechnicHot Dip Galvanized
• FeatureHigh Tensile
• FinishingPolished

Socket cap screws are commonly used in machine parts, die fixturing, and clamping. The socket head enables driving where there is not sufficient space for wrenches or sockets.

Spacers are designed to hold materials a predetermined distance away from the surface they are mounted to, or mount two items a set distance apart. Sizes and materials vary depending on intended use.