Bolt (fastener)

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bolt is a threaded fastening form with an external male thread. Bolts are closely related to, and are often misunderstood with screws.

Video Bolt (fastener)

Bolts vs. screw

The difference between screws and screws is generally misunderstood. There are some practical differences, but most have an overlap between screws and screws.

The decisive difference, per Machine Handbook , is in their intended purpose: Bolts are for assembling two uncut components, with the help of nuts. Contrast screws are used in components, and can cut their own internal channels. There is a large overlap between the screw and the screw in the function.

Bolts are often used to make bolt connections. It is a combination of nuts that apply an axial clamping force and also a calf from a bolt that acts as a wooden stick, which attaches the connection to the sliding force to the side. For this reason, many bolts have plain bony calf (called the grip length ) because this makes for a better and stronger dowel. The presence of a shank that is not ogled is often given as a characteristic bolt vs. screw, but this is incidental for its use, rather than defining. The length of the handle should be chosen carefully, so that its length is almost equal to the thickness of the material, and any washers, bolted together. Too short puts the load of the dowel slide onto the thread, which can cause damage to the hole. Too long prevents the nut from being tightened properly. No more than two rounds of thread should be in the hole.

Where the binder forms its own thread in a bonded component, it is called a screw. This is so obvious that when threaded threads (ie traditional wood screws), block the use of nuts, or when metal screw sheets or other threaded screws are used.

Screws should always be rotated to assemble the connection. Many bolts are mounted in place during assembly, either with a tool or with a non-rotating bolt design, such as a train bolt, and only the appropriate nuts that are rotated.

Maps Bolt (fastener)

Head bolt

Bolts use a variety of head designs, just like screws. It's designed to engage with the tools used to tighten it. Some head bolts do not lock the bolts in place, so they do not move and the tools are only needed for the tip of the nut.

Common bolt heads include hex, slotted hex washer, and socket cap.

The first bolt has a square head, formed by forging. This is still found, although more common today is the hexagonal head. It's held and played by a wrench or wrench, which is in many forms. Mostly held from the side, some from in-line with bolts. Other bolts have T-heads and slotted heads.

Many screws use a screw head fitting, not an external wrench. The screwdriver is applied parallel to the binder, not from the side. It's smaller than most of the wrench heads and usually can not apply the same amount of torque. It is sometimes assumed that the screwdriver head implies a screw and the wrench implies a bolt, although this is not true. The Coach Screw is a large square-headed screw with a pointy screw thread, used to attach iron to wood.

The overlapping head designs are both Allen or Torx heads; hexagonal or spline sockets. This modern design reaches a wide range of sizes and can carry considerable torque.

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Type of screw

• Bolt anchors - Bolts are designed to allow objects to be attached to concrete. The heads of the bolts are usually placed in the concrete before being healed, leaving the threaded ends open.
• Murbor arbor - Bolt with washing machine installed permanently and reversed with threading. Designed for use in partner saws and other tools for automatic fastening when used to prevent knife fall.
• Slide the cart - Bolt with smooth round head and square part to prevent bend followed by threaded parts for nuts.
• Elevator Bolt - Bolt with large flat head used in conveyor system configuration.
• Hanger bolt - Bolt with no head, threaded body of machine followed by threaded threaded end of wood. Let the nuts stick to what is really screw.
• Hex bolt - Bolt with hexagonal head and thread. The direct part under the head may or may not be threaded.
• A bolt - Bolt shaped like a J. Used for a tie down. Only the non-curved parts are threaded for the embedded nuts.
• Lag bolt - Not the correct bolt. Hex head bolt with screw thread tip for use in wood.
• Rock bolt - Used in tunnel construction to stabilize the wall.
• Sex bolt or Chicago Bolt - Bolt which has a male and female section with an inner thread and a bolt head on both ends. Commonly used in paper binding.
• Shoulder bolt or Stripper bolt - Bolt with broad fine shoulders and small threaded ends used to create pivot point or attachment.
• U-Bolt - Bolt is shaped like the letter U where two halves are threaded straight. Straight metal plates with two bolt holes are used with nuts to hold pipes or other round objects to U-bolts.

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Selection of bolt material

Regarding the strength and condition requirements, there are several types of materials that can be used for the Binding Material Selection.

• Firming Steel (Class 2.5,8) - power level
• Stainless Steel Fasteners (Stainless Steel Martensite, Austenitic Stainless Steel),
• Bronze and Brass Fasteners - Use of water proof
• Nylon Fasteners - used for lightweight materials and use of water proof.
• Generally Steel is the most commonly used material of all fastener (90%) above.

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See also

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References

Source of the article : Wikipedia