Some Types of Bolt & Nut

A nut is a type of fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads’ friction, a slight stretch of the bolt, and compression of the parts. In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed.

The most common shape is hexagonal, for similar reasons as the bolt head – 6 sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off. Other specialized shapes exist for certain needs, such as wing nuts for finger adjustment and captive nuts for inaccessible areas.

Anchor Bolt	Bolt, Nut & Washer	Countersunk	Dynabolt
Eye Bolt	Hex Bolt & Nut	Stud Bolt	Anchor Bolt
Bolt & Nut	Bolt & Nut	Countersunk	Countersunk
Dyna	Eyebolt	Eyebolt	Eyebolt
Stud	Stud