Feb 21, 2019 Driving Methods. Hex: There are two types of screws that have hex heads — one that has a hexagonal recession in the head and one that does not have any grooves or slots at all. A hex socket screw or Allen screw requires the use of an Allen wrench, which has a hexagonal shaft that is inserted into the recession in the screw head. Identification Charts for Different Types of Fasteners : Head styles , Bolt and Screw , Drive, Washer and Nut types . Stainless steel, carbon steel, and alloy steel are the three major steel fasteners manufactured in industries fasteners. With the help of below charts you can identify almost any type of Bolt and Screw different types of Fasteners , Head styles in Fasteners, Drive types in Fasteners, Washer types in Fasteners and Nut types … The reasoning might help in remembering the biggest difference between screws and bolts . A bolt is defined as a threaded fastener with a nut and a flat bottom. It requires a nut to secure it to a material.

Machine Screws. A machine screw is a screw or bolt with a flat point. Available in a variety of drive types and heads, they fit a wide variety of applications. Often driven into tapped holes. Used with nuts and washers, also known as “stove bolts” or “stovers”. Shop our Machine Screws. Here types of screws and bolts . A crude way of differentiating a screw and a bolt is to state that a threaded fastener with a nut and a flat bottom is a bolt and one without is a screw . However, the most suitable way to distinguish a screw and a bolt hereprehending that, in essence, the main difference between a screw and a bolt arises in the way they are used. A screw / bolt is a type of fastener distinguished by a circular ridge, known as threads which are wrapped around a cylinder. While some screw threads are […] Different Types of Screws and their Uses

We have the charts to help you identify the many different types of bolts and screws for just about any project. Using the proper specific bolt type is very critical when working on a wood or metal project. 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,.