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Conferences and Seminars. Workshops and Training. Benefits of Attending. Sponsors and Exhibitors. Speaker Opportunities. In-House Training. Nuts and Bolts series. Library Services. Gift Vouchers. Author Guidelines.For Flat Head - Measure length from the top of the head to the end of the screw. Socket screws, also known as Allen Head, are fastened with a hex Allen wrench. Bolts with a hexagonal head with threads for use with a nut or tapped hole. Bolts in U shape for attaching to pipe or other round surfaces.

Also available with a square bend. Thread Cutting Machine Screws Machine screws with a thread cutting self tapping point.

A bolt with a circular ring on the head end. Used for attaching a rope or chain. Shoulder bolts also known as stripper bolts are used to create a pivot point. Elevator bolts are often used in conveyor systems.

Bolts types-etc.pdf

They have a large, flat head. Sex bolts a. Mating Screws Mating screws have a shoulder that matches the diameter of the sex bolts they are used with. Hanger bolts have wood thread on one end and machine thread on the other end.

How to Read a Metric Screw Thread Callout

Installs with a normal slotted driver but can not be removed without special tools. A six-pointed star pattern, specifically designed to prevent cam-out and stripped heads. A flat washer, used to distribute An oversize flat washer used to load. A washer with external teeth. Used to prevent nuts and bolts from backing out. A washer with internal teeth.

The most common style of washer used to prevent nuts and bolts from backing out. Thick, large diameter, cast iron washers with a curved or sculpted appearance. Typically used in dock and wood construction. Coupling nuts are long nuts used to connect pieces of threaded rod or other male fasteners. A nut with a nylon insert to prevent backing off. Also referred to as a Nylock.Working on a project and trying to find the name of a special bolt type?

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. 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.

Using the wrong fastener on a DIY craft project or maintenance job can spell disaster. Use the charts below to help you get a better and more informed idea of the fastener type you will need to complete your next project. Do you know of a better screw and bolt identification chart? Please comment below with a link to further assist our readers. Tagged as: allenbolt nut metricbolt typeboltschartfastener chartfastener typeguidehex boltidentification chartnut typescrew typescrewssheet metaltype of screw guidetypes of bolts and nutstypes of fastenersUS and Metricwasher type.

Leave this field empty. This DIY "Do it Yourself" website was created by maintenance professionals and home renovating experts. Information contained within RemoveandReplace. We aim to always deliver relevant and engaging content where facts and information provided is checked and rechecked for accuracy. He has 30 years of experience troubleshooting and repairing all types of machinery.

Contact here. Cancel reply Leave a Comment. Note: Any images or third-party logos on this page belong to their respective copyright holders and are used for informational purposes only. Disclaimer: Posts on this website may contain references to products from one or more of our advertisers. We may receive compensation when you click on links to those products.Fastener nuts are internally threaded devices that are typically used in combination with equally threaded bolts to produce a joining of two or more components.

Standard inch and metric fastener nuts are available in a wide range of sizes, strengths, materials and finishes and aid in securing a joint from loosening due to vibration.

Fastener Solutions offers a variety of nuts that are available in a selection of shapes, sizes, styles, grades, and plating. We will work with you to choose the most effective and durable product for your application.

Our most common types of nuts and bolts are the hexagonal or square nuts with internal threads that screws on to a threaded bolt, but we stock everything from wing nuts to battery nuts.

View our full inventory of products below. Nuts and bolts used in corrosive atmospheres can perform better when they are constructed from stainless steel instead of standard steel. Stainless steel which has a higher nickel or chrome content than standard steel, which makes it more corrosion resistant. Fastener nuts and bolts are also available in other materials such as high-strength steel, brass, aluminum, plastic and other types of exotic metals. All Fastener Solutions fastener nuts are available in a wide range of material options, including an assortment of exotic metals that have many different types of unique properties.

Finished hex nuts are internally threaded, six sided hexagonal fasteners that are used to secure mechanical joints. Finished hex nuts are the most versatile and widely used commercial nut design available today. Hex jam nuts are internally threaded, hexagonal fasteners with a lower profile than standard hex nuts. They are also known as thin hex nuts because their low profile is normally half the height of a standard nut. Nylon insert nuts are internally threaded, hexagonal nuts with a nylon collar insert.

When vibration occurs within the nylon insert lock nut and a screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement of the screw.

These reliable and durable fastener nuts will resist loosening and are used for industrial purposes or in the Aerospace industry. Acorn nuts, also referred to as cap nuts, are internally threaded nuts with a dome top.

While acorn nuts tighten fastener joints as standard nuts do, they also cover the threaded end of the fastener providing a safe cover and more finished appearance. These unique fastener nuts are primarily used to protect or conceal threads on plumbing fixtures and industrial machinery. Square nuts are four sided nuts that are used with a flat bottom side and a chamfered, washer-crowned top.

They are specifically designed to be used with square head bolts. Square nuts provide a large bearing surface that ensures complete adherence.

These durable nuts can also be easily installed using a hand wrench. We also carry several other types of fastener nuts including: structural and heavy hex nuts, machine screw nuts, all metal locking nuts, coupling nuts, slotted hex nuts, wing nuts, axle nuts, weld nuts, monel flats locks and more.

Our numerous types of nuts and bolts can also be galvanized. The hot dip galvanization process adds a layer of zinc to your fastener, which provides it with an extra layer of protection. This thick protective layer of zinc will add increased corrosion resistance and extend the life of the fastener. Contact us for more information regarding our fastener nut options including: finished hex nuts, hex jam nuts, nylon insert lock nuts, acorn nuts, square nuts and more.

We can also fully customize your fastener nut needs. All our fastener nuts are available in a wide variety of material options, including exotic metals.

14 Types of Nuts: How Do They Compare?

You can also request a quote or call us directly at with any questions you may have. View Cart. Finished Hex Nuts Finished hex nuts are internally threaded, six sided hexagonal fasteners that are used to secure mechanical joints. Hex Jam Nuts Hex jam nuts are internally threaded, hexagonal fasteners with a lower profile than standard hex nuts. Nylon Insert Lock Nuts Nylon insert nuts are internally threaded, hexagonal nuts with a nylon collar insert. Acorn Nuts Acorn nuts, also referred to as cap nuts, are internally threaded nuts with a dome top.

types of nuts and bolts pdf

Square Nuts Square nuts are four sided nuts that are used with a flat bottom side and a chamfered, washer-crowned top. Galvanized Fastener Nuts Our numerous types of nuts and bolts can also be galvanized.A fastener is a hardware device that is used for creating non-permanent joints.

Fasteners can be used to close a container of a box or an envelope, or they may involve keeping together the sides of an opening of flexible material, attaching a lid to a container, etc. Other alternative methods of joining processes for joining materials include welding, solderingbrazingcrimping, taping, cementing, gluing or the use of other adhesives. The use of forces such as magnetic force or even frictional force can also join materials.

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 in Fasteners.

He also writes for vrcworks. This is exactly the sheet I have been looking for. I need a list of each different fastener so that I can better organize my garage. This is the sheetwhich I exactly searching for. Is there any chart of Torque achievable and other factors. It appears to be an alignment type fitting but I cannot find another one, nor know what to ask for. This site uses Akismet to reduce spam.

Learn how your comment data is processed. Machine Design. Weldability: Introduction and Factor Affecting it. Rivets: Different Types of Riveted Joints.

Screw Threads Terminology. Related Posts on Machine Design topic s. Desirable Properties of Bearing Materials. Types of Rolling Contact Bearings. Design for Automated Assembly. Sleeve Bearings. Bolt Chart Joining Screw.

36 Types of Screws and Screw Heads (Ultimate Chart & Guide)

All Comments. I need a list of topics in briefly.In this article, you will learn about the types of nuts and bolts. A bolt contains two parts a shank and head. The cylindrical portion of the bolt is known as the shank. The shank is threaded at the tail end for a sufficient length so as to effectively engage with a nut. The shape of the head is depended upon the purpose for which bolt is required. The nut is a type of a fastener which has a threaded hole in it. The hexagonal head is chamfered at its upper end.

To prevent rotation of the bolt while screwing the nut on or off, the bolt-head is held by another spanner. A hexagonal-headed bolt illustrated in the figure. This bolt is commonly used when the head is to be accommodated in a recess. This recess is made of square shape so that the bolt is prevented from turning when the nut is screwed on or off. When a square-headed bolt is to be used with its head projection outside, it is provided with a neck of square cross-section.

This prevents rotation of the bolt. This bolt is commonly used in bearings for the shaft. A square-headed bolt is shown in the figure. This type of bolt is used where projecting corners are unacceptable, and where the space for arranging the bolt-head is relatively limited. The rotation of the bolt is prevented by means of a pin inserted into the shank just below the head.

The projecting part of this pin fits into a corresponding groove in the adjacent piece.

types of nuts and bolts pdf

This bolt is commonly used in big ends of connectors, eccentrics, etc. It is usually provided with a sung forged on the shank just below the head, as shown in the figure.

To prevent rotation of the bolt. This bolt is it used in the construction of tanks and certain parts of locomotives. This type of bolt is used for securing clamps, vices, and other accessories to the tables of machine tools. The tables are provided with T-slots to accommodate the T-heads. The neck of this bolt is usually square in section to prevent rotation of the bolt A T-bolt is shown in the figure.

This form of a bolt is used where the head of the bolt must not project above the surface of the connection piece. A stove bolt has a round flat head which is bevelled on the underside to fit a countersunk hole, it is provided with a slot on the head, as shown in the figure.

For screwing the bolt into a nut by means of a screwdriver. This is used for assemblies where precision is of no great importance, and it is desirable to have the head of the bolt flush with the surface of the work. This is used for fastening wooden parts together or for fastening metal parts to wood it has squared portion directly under the head to prevent rotating when the nut is tightened or slackened.

A carriage bolt is shown in the figure.Danielle Hill has been writing, editing and translating since When people speak of the "nuts and bolts," they're generally talking about the basics or the practical essentials of something. Indeed, physical nuts and bolts serve as fundamental components in many construction projects. While they're a ubiquitous sight among any builder's materials, both nuts and bolts come in a wide array of styles, each dedicated to a particular function.

You can identify hex bolts by their hexagonal or "hex"-shaped heads. A hex bolt's shaft may have threading all the way up to the head, or it may be only partially threaded. You can use a hex bolt with a nut or with a tapped hole. It's easy to identify a hanger bolt from any other bolt type, as they do not have the basic structure of a head and a shaft.

Rather, the hanger consists of a single shaft with different threadings on either end. It works to connect a wood element, for which one end has wood threading, with another element, which takes a machine thread.

You can identify the carriage bolt by head, which is rounded and lacks any indentation for a screwdriver. Directly beneath the smooth head, a carriage bolt has a square element before tapering into its partially-threaded shaft. The end of a carriage bolt is flat, like most bolts, with the exception of the lag bolt. Chicago bolts, barrel nuts or sex bolts are all names for the same uniquely-shaped type of bolt.

Unlike other bolts, which have threading along the outside of a cylindrical shaft, the Chicago bolt has a hollow shaft that is smooth on the outside and threaded along its interior. This form is also known as a "female" thread. Chicago bolts fit together with regular "male" bolts in the same way that normal nuts do. However, as they have a head and a shaft component, many still classify them as bolts. A basic hex nut has six sides and is also called a "finished hex nut.

A nylon insert lock, or nylock, is a hex nut with a nylon insert that helps to hold it securely in place.

types of nuts and bolts pdf

A jam nut is a shorter hex nut. A nylon insert jam lock is, accordingly, a shorter nylock. Popularly used for craft projects and other temporary fastening, wing nuts have heads sculpted into two "wings. A cap nut is closed on one end, with a smoothly-domed top.


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