Types of rivets pdf

Before setting most rivets—including the aforementioned standard blind rivet—a riveter must drill holes into the workpiece. This requirement increases the total lead time, especially for large production runs, which can make using rivets less cost-effective than other fasteners. One solution to this issue is the use of a self-drilling blind rivet. Self-drilling blind rivets have threaded drill sections on mandrels protruding through hollow cylinders within the rivet.

As a result of this design feature, the rivet can drill its own hole as the rivet gun drives it in. Additionally, the threaded mandrel tip can either remain on the end of the rivet or dislodge once the rivet is fully inserted. One disadvantage to these types of rivets is their cost.

The high complexity of the design and high precision required to manufacture the threaded drill raises the cost of the part significantly in comparison to other rivet types.

Additionally, the self-drilling process can be less precise than other insertion processes, resulting in swarf or burrs around the rivets and a decrease in the overall stability of the assembly. The self-tapping rivet was developed to resolve some of the issues with self-drilling, blind rivets. Essentially, the difference between the rivet designs is the manner in which the hole is punched through the sheet metal.

With the self-tapping rivet, the hole drilling process is completely removed and instead replaced with a screwing motion that both creates the rivet hole and locks the rivet into place. Speed fasteners—also referred to as hollow bore or mandrel-loaded rivets—are a type of blind rivet which operates similarly to the standard blind rivet design.

However, unlike the latter design, speed fasteners incorporate the mandrel component into the rivet setting equipment rather than as a separate break-off component of the rivet, which can significantly increase the speed of installation in comparison to that of the previously mentioned designs. Considered a member of the blind-rivets family, drive rivets are used to secure panels and similar architectural features to masonry walls, etc. Instead of the mandrel being pulled to upset the rivet tail, as with many blind rivets, the mandrel is hammered into the rivet body, expanding the shank and causing it to grip the walls of the hole into which it is inserted.

Split, or bifurcated , rivets are identified by pairs of legs on their tails which are folded back on themselves after installation to complete the clinch. Materials are used to manufacture these rivets aluminium alloys, titanium, and nickel alloys. Countersunk head rivets are used where the top surface of the plate is required to be free from projecting rivet heads.

It is used in countersunk or dimpled holes and mostly in aircraft for aerodynamic flexibilities. It is also known as the Flush rivet. Round, flat and solid cylindrical in design, is perfectly suitable for fastening joints, rotating parts and other industrial needs. This requires less force to penetrate than solid rivets. This is also known as a slotted rivet. This has a head height of 0. I hope, you liked spending time here and added some value to you. If so, consider sharing this article with your friends and colleagues, because sharing is always a form of caring and you should not miss this opportunity.

All about digital radiography in the next 10 min! Abhishek Tiwary is a blogger by passion and a Quality Engineer by profession.

He has completed his B. Tech degree in the year of The typical applications of tubular rivets are lighting, brakes, ladders, binders, HVAC duct work, mechanical products, and electronics. The available materials are ranging from steel, stainless, to aluminum, brass, and copper. Blind rivets can be installed without access to the back side of the item being riveted. The rivet assembly is inserted into a tight hole through the material to be joined and a riveter or special tool is used to draw the mandrel through the rivet, the compression force between the head of the mandrel and the tool expands the diameter of the tube, then locking the sheets being fastened.

Blind rivets can be divided into standard blind rivets, self-drilling blind rivets, self-tapping blind rivets, speed fastening blind rivets. Blind rivets can be used for different purposes at home applications, attaching nameplates, signs, hinges, door knobs, handles, and ceiling decorations, as well as woodworking and industrial applications.

Drive rivets are used to secure panels and other similar architectural features to masonry walls, it does not need through-holes. Drive rivets are best for any purposes in which the hole does not penetrate the entire sheet or panel. The best uses for split rivets are soft materials, including plastic, wood, or leather.

There are more forms of rivets are available.