How to use bolts and screws correctly in different situations

Update:04-08-2020
Summary:

Bolts and screws produced by Hand Tools Suppliers are u […]

Bolts and screws produced by Hand Tools Suppliers are used as common connection fasteners in daily life, which mainly play the role of connection and fixing in various fields and equipment.

At this time, someone may ask, both of them have similar effects, so in the actual operation process, just use it casually, right?

In fact, no!

Must be used according to the actual situation and the different performance of bolts and screws. Otherwise, it may cause serious consequences.

bolt

Mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener consisting of a head and a screw (cylinder with external threads), which needs to be matched with a nut to fasten and connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

Screw

Screw refers to a screw, which is a tool that uses the physics and mathematics principles of the oblique circular rotation of the object and the friction force to gradually tighten the utensils.

There are many differences between fastener bolts and screws:

No.1 Different definitions

Bolts: Bolts are cylindrical threaded fasteners that are paired with nuts during use. It is mainly used to fasten and connect two parts with through holes. This connection form is called bolt connection.

Screw: It can also be called a screw. A screw is a tool that uses the physics and mathematics of the oblique circular rotation of the object and the friction force to cyclically tighten objects and parts. The set screws are used to fix the relative positions of the parts. Screw the set screw into the screw hole of the part to be tightened, and press its end against the surface of another part, that is, fix the former part on the latter part.

No.2 Different shape and structure

Bolt: A type of fastener consisting of a head and a screw (cylinder with external thread). The head is mostly hexagonal, which is generally larger.

Screw: A type of fastener consisting of a head and a screw. The head is mostly slotted or crossed, and there are many hexagons inside and outside, generally small.

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No.3 Different applications

Bolts: Generally used in pairs with nuts, for through holes, easy to replace after damage.

Screws: usually do not need a nut, and directly match with two objects (generally, the connecting piece needs to be drilled and tapped), which is mostly used for blind holes, and the connected piece is rarely removed.

No.4 Different tools

Bolts generally use wrench-like tools.

Screwdriver tools are generally used.

No.5 Different tightening

Bolt: Generally used in conjunction with a nut or screwed into a machined bolt hole.

Screws: In addition to the two fastening methods of bolts, there are self-tapping screws, which are directly screwed into a soft workpiece without processing bolt holes. For example, the wood screws we call are this kind of screws.

No.6 Different occasions

The use places of bolts and screws are different.

Bolts do not require high accuracy. Unless there is a matching requirement, bolts are generally easy to disassemble, have low machining accuracy, are not limited by connecting materials, and are widely used. Bolts that require matching can withstand lateral loads.

The screws are compact in structure, but cannot be disassembled frequently and cannot withstand large forces.