With good resistance to oils and low permeability to gases, PVC is inherently self-extinguishing. This makes it an excellent material for wire and cable insulation.

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You can learn more about washers in our guides: When to use plastic washersand How and when to use washers effectively. Rivet lengths typically come in 1/16 inch increments. Just as we did with the diameter, we have to convert our .39425 figure by dividing it by 1/16. Our formula now looks like this: For example, an acetal dowel pin is inserted into receiving holes, which hold parts of an assembly together through the use of friction. A tight fit keeps the parts firmly together in fixed alignment.

What are the different types of fasteners and their uses?

Snap rivetshave male and female parts that pass through the panels to join together and present a finished edge on both sides. Snap rivets are a type of push-in rivet. The material has good impact strength, pliability, and is cost-effective. It also offers excellent electrical resistance, so it’s often used in electronics. You’ll find polypropylene used in pharmaceuticals, too, due to its high resistance to many chemicals. Washers are used to distribute the load of threaded fasteners by increasing the surface area. They reduce the risk of stress-related damage to the material that the threaded fastener is driving into. Sometimes, washers can give you spacing as well, preventing your fastener from going deeper into the material than you might want.

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Mild steel is a type of carbon steel. There are different grades of mild steel, with it containing anywhere between 0.05 to 0.25% carbon. Additives give it critical properties such as corrosion resistance, tensile strength and wear resistance. The flat washer helps reduce surface pressure on softer materials, which in turn decreases the loss of clamp load. The material it’s made of can provide additional properties. For example, nylon flat washers resist chemicals.

Tough and durable, Polyethylene has high impact strength. It also has high ductility, and as a result, provides a degree of flexibility. It’s crush-resistant, protecting applications against damage. Push-in blind rivets are so called because they can be installed even if you can’t access the rear side (“blind” side). An example is a clinch rivet. All you need to install it is a pop rivet installation tool. Another type of blind rivet is the drive rivet. The drive rivet has a short mandrel that protrudes from the head. It’s placed into the hole and a hammer is used to drive the mandrel in, flaring out inside the hole to provide a secure, load-spreading fix. Drive rivets have a specific application, used to secure panels and architectural features to masonry walls. Polysulfone (PSU) is a transparent material with high-impact resistance. It provides high performance, has good electrical properties and resistance to chemicals. One reason for its popularity is its outstanding hydrolytic stability against hot water and steam sterilisation. It performs especially well in high-temperature environments and resists detergents and hydrocarbon oils even in those conditions, under moderate stress levels. US-based woodmaker and youtuber andrew klein has revealed his ‘next big thing’: a screw with invisible slots that disappear completely. instead of needing to be hidden like ordinary screws, this precision-crafted innovation can be integrated into any design as a decorative accent, as the holes are only visible when the screwdriver is introduced, completely disappearing once the tool is removed. created with the purpose of aesthetics in mind, these new screws are ideal for carpenters who want an extremely clean and seamless look on their finished pieces.

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Acetal provides high strength and stiffness. Its good dimensional stability makes it an easy material to machine. A semi-crystalline material, acetal has good chemical resistance. It offers a low coefficient of friction and good wear. It has very low moisture absorption while resisting abrasions. Tough, strong and abrasion resistant, Nylon has a very low coefficient to friction. With good thermal and chemical resistance, it also provides resistance to tears, chemicals, and can be formulated to stand up to UV rays. Nylon’s strength means it can be used instead of more expensive and heavier low-strength metals. as a decimal is .1875. If we multiply that by 1.5, we get .28125. So our formula now looks like this: .28125 + .113. The total is .39425 of an inch for your length. A wing nut has tabs, or wings, on the side, enabling manual turning. This is especially useful if the wing nut has to undergo frequent removal and reinstallation. A thumb nut is also applied manually. Like the wing nut, it’s ideal if the nut needs to be removed often. However, it should never be used as structural support. It works well, for example, on panel and machinery covers. Nuts, which have threaded holes, work in conjunction with bolts, strengthening the parts they hold together. Usually, most nuts have a hexagonal shape. This is only on the exterior, while the interior is actually cylindrical. The purpose of the hex exterior is to make installation easier. Six sides makes the hex nut easier to grip, which translates to easy installation or removal.Rivets are manufactured by 1/32 differences, so you can’t get a rivet with a diameter of .183, unless you have it custom made. Polycarbonate is tough and transparent. It provides high impact strength and high modulus of elasticity. Other benefits include its high heat deflection temperature and very low moisture absorption. It’s a popular material for electrical and electronic applications due to its low frequency and high-voltage insulating properties. Because of its strength and transparency, it’s also ideal for point of sale and displays. You might find it helpful to read our guide: When to use polycarbonate fasteners.

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What’s the difference between a threaded rod and threaded stud? That depends on who you talk to. In some quarters, they’re one and the same. To others, a threaded stud refers to a shorter length than a threaded rod. A stud also often has a slot in the end for installation. PEEK (polyetheretherketone) is a high-performance plastic that maintains stiffness at high temperatures. It has outstanding resistance to harsh chemicals, and excellent mechanical strength and dimensional stability. Another benefit is its resistance to steam and water. All of these reasons make it a favourite of the healthcare industry. Polyoxymethylene (POM) is also known as acetal. It’s a highly crystalline thermoplastic favoured for its stiffness, hardness, and low creep under stress. It also provides high flexural and tensile strength, has a low coefficient of friction, excellent chemical resistance and outstanding fatigue properties. The flip side is, POM has moderate heat stability and insufficient flame resistance. While it’s the perfect material for many applications, it’s not ideal for those where heat is involved. Carbon steels are iron-carbon alloys containing up to 2.5% carbon. The addition of carbon adds strength to steel, though like any steel, it can still stress and break under pressure. There are different grades of strength in carbon steels. ASI 1022 carbon steel is often used in structural applications with moderate strength, such as bolts and cold formed fasteners, and recessed head screws and low-strength fasteners. Rivets serve as another type of panel fastener, although their purpose is broader, joining together other items as well.You’ll find that nylon 6.6, a variant, is stronger still, and absorbs less moisture than standard nylon. When a high level of torque is required in your fastener, it’s the ideal material. Nylon 6.6 is popular and used to make everything from fasteners to cable ties.