Types of bolts and nuts pdf

External Tooth Lock A washer with external ‘teeth’. Used to prevent nuts and bolts from backing out. Ogee Thick , large diameter, cast iron washers with a curved or sculpted appearance. Typically used in dock and wood construction.

Internal Tooth Lock A washer with internal ‘teeth’.

Cable trays to brackets and other components. Knowing the names and the specific types of screws , bolts , washers, or nuts you will need for your current or future DIY project is very important. Simply knowing the head type on a screw or bolt can let you know what type of screwdriver or socket type you will need so you do not strip or cross thread your fastener.

In this article, you will learn about the types of nuts and bolts. A bolt contains two parts a shank and a head. The cylindrical portion of the bolt is known as the shank. Fully threaded hex bolts are also known as tap bolts.

Wood screws have large threads and a smooth shank f or pulling two pieces of material together.

They can be used in wood and other soft materi-als. Sheet metal screws have sharp points and threads, and are designed to be driven directly into sheet metal. Tamper-resistant screws are variations of some of the most common types, such as TORX , Phillips , and Hex. These screws are beneficial for use in public places that might fall victim to theft, like public restrooms, where expensive fixtures can be tempting for some. There are various types of tamper-resistant screws ,. Bolts as well as screws are available in a vast variety of head shapes.

These heads are made in order to grip the tools that are used to tighten them. The most common type of bolt head types includes square , hex , slotted hex washer and socket cap. Types of Nuts and Bolts.

To make it easy for you, we’ve compiled the data below as a guide for figuring out what each fastener is called. How many different types of bolts and nuts are in the world? Fasteners come in many different forms.

What is a bolt without a nut called? What are the different types of lug nuts? A Screw is a headed and threaded bolt used with-out a nut.

It is inserted into an internally tapped hole and tension is induced by rotation of the screw head.

A Stud is a fastener with no head but it has threads at both ends of the shank. It, like a screw, has one end that screws into a tapped hole. A nut is used on the other end to create tension.

Most, if not all, bolt types have machine threads. A threaded bolt screws into nuts to hold or fasten materials together. Bolt types include eye bolts , wheel bolts and machine bolts while types of nuts include cap nuts , expansion nuts and u- nuts. This guide will tell you the about the types of nuts and bolts and the different types of bolt heads.

Nuts and bolts were invented in as early as the st century,  The Romans used them to bind windows, secure chariots and build machines. The first nuts and bolts had square heads unlike the one used today that are hexagonally shaped. Basic bolt types are characterized by their shape and head type.

Allow objects to be attached to concrete, with the bolt head normally placed in the concrete before it has cured so the threading end is exposed and ready. Bolts come in several configurations for their application and specification variances. Since the terms bolt and screw were in use before the advent of easily-produced helix fasteners,. About of these are machining, are sheet metal fabrication, and are book printing.

A wide variety of bolts and nuts pdf options are available to you, such as broaching, drilling, and milling. After the nut is tightened the tab and the projecting portion of the washer itself are bent to bear against the vertical surface of the workpiece and one of the lateral faces of the nut or, the bolt head. In the type of locking, the friction between the mating threads of bolt and nut locks the nut.

Also known as a “coach” bolt, has a domed or countersunk head. The square section under the head grips into the part being fastened preventing the bolt from turning when the nut is tightened. Hex tap bolts, hex cap screws, trim head hex cap screws, and hex serrated flange bolts fall under this category.

Our numerous types of nuts and bolts can also be galvanized.