Language:

Common problems

News

Do fasteners mean plain bolts and high-strength bolts?

Release:admin Browse:784Second Time:2020/3/19 14:12:09
Fasteners usually include the following 13 types of parts:

Bolt: a type of fastener consisting of two parts, a head and a screw (cylinder with external thread), fitted with a nut and used for fastening two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

Stud: a type of fastener having no head and having only external threads at both ends. When joined, one end must be screwed into the part with the inner threaded hole, the other end must be threaded through the part with the through hole, and then the nut is screwed, even if the two parts are tightly joined as a whole. This type of connection is called a stud connection and is also detachable. It is mainly used for one of the connected parts with large thickness and compact structure, or it is not suitable for bolt connection due to frequent disassembly.

Screw: also a type of fastener consisting of two parts, the head and the screw. Machine screws are mainly used for the fastening connection between a part with a threaded hole and a part with a through hole. It can also be fitted with nuts for fastening connections between two parts with through holes. The setting screw is mainly used to fix the relative position between two parts. Special purpose screws such as ring screws for lifting parts.

Nut: with internal threaded hole, the shape is generally shown as a flat hexagonal column, but also a flat square column or flat cylinder, with bolts, studs or machine screws, used for fastening the connection of two parts, so that it becomes a whole.

5. Self-tapping screw: similar to the machine screw, but the thread on the screw is a special thread for self-tapping screw. For fastening two thin metal members to make them into a whole, small holes need to be made in the members in advance. Due to the high hardness of this screw, it can be directly screwed into the holes of the members to form a responsive internal thread in the members

6. Wood screw: it is also similar to the machine screw, but the thread on the screw is a special thread for the wood screw, which can be screwed directly into the wood member (or part), used for fastening a metal (or non-metal) part with a through hole to a wood member. This connection is also a detachable connection.

7. Gasket: a type of fastener in the shape of a flat ring. It is placed between the supporting surface of bolts, screws or nuts and the surface of the connecting parts, which can increase the contact surface area of the connected parts, reduce the pressure per unit area and protect the surface of the connected parts from being damaged. Another type of elastic washer can also prevent the nut from loosening.

8. Baffle ring: it is used to install in the shaft groove or hole groove of the machine and equipment to prevent the parts on the shaft or hole from moving left and right.

9. Pin: mainly used for positioning parts, some can also be used for connecting parts, fixing parts, transferring power or locking other fasteners.

10. Rivet: a type of fastener consisting of two parts, the head and the nail rod, used for fastening parts (or components) connected to two through holes to form a whole. This type of connection is called rivet connection, short for riveting. Belong to a non detachable connection. Because to separate the two parts that are joined together, the rivets on the parts must be broken.

11. Assemblies and coupling pairs: assemblies refer to a class of fasteners supplied in combination, such as a machine screw (or bolt, self-supply screw) supplied in combination with a flat washer (or spring washer, lock washer); Coupling refers to a class of fasteners supplied with a combination of a particular bolt, nut, and washer

12. Welding nail: a special fastener made of light energy and nail head (or no nail head), which is fixed on one part (or component) by welding, so as to be connected with other parts.

13. Wire screw sleeve: wire screw sleeve is a new thread connection element, is made of high strength, high precision corrosion resistance diamond wire. It has the shape of a spring and is installed in a specific screw hole of the matrix. The internal surface of it forms a standard thread. When matched with the screw (bolt), the thread connection strength and wear resistance can be significantly improved. Especially in aluminum, magnesium, cast iron, plastic and other low - strength materials. Lock type is in the general type on the basis of an additional round or several rounds of lock. Xinxiang yongda industrial co., LTD is a professional manufacturer of steel wire spiral sets, suggested wire embedding a screw aluminum, magnesium, iron, glass, plastic and other low strength of screw thread of engineering materials, can form the standard M, MJ thread, with continuous strength, resistance to impact and abrasion loss function, and can disperse stress to protect matrix thread, greatly extend the service life of the matrix. At the same time, the stress of the thread is improved, the elastic connection is formed, the pitch and half Angle error of the tooth between the internal and external threads are eliminated, the load on the thread is evenly distributed, the base thread is protected from damage, and the service life is extended.
CONTACT

Hotline:0512-53667068
Fax: 0512-53667078
Phone: 13771903149
Email: wayne.yang@sz-chuangjia.com
Add:No. 88, Jiangnan Road, Taicang
ATTENTION
WECHAT
Copyright ©Suzhou huirenyou fastener co., ltd           Technical support: taicang website construction