Bolt Types

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Advantage of High Strength Dacromet Bolt

The advantage of high strength Dacromet bolt is due to the development of Dacromet, which has become a necessary technical requirement in some workplaces. The main reasons are as follows: 1. Electroplating not only pollutes the air, land and water, but also does great harm to operators. The state has repeatedly declared that it is [...]

By |September 8th, 2020|A563, ASTM International Standard, Bolt Types, F568M, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, Structural Bolts|Comments Off on Advantage of High Strength Dacromet Bolt

Thread Processing Technology of High Strength Bolt

The thread of high strength bolt is realized by receiving hot working method. The thread material within the diameter range is processed through the process of thread rolling plate, and the screw thread of high strength bolts is formed by the pressure of screw plate. If the plastic flow line of the thread part is [...]

By |September 8th, 2020|A325, A490, ASTM International Standard, Bolt Types, High Strength Bolts, High Strength Structure Bolts|Comments Off on Thread Processing Technology of High Strength Bolt

Advantages of Hot-dip Galvanized Bolt

Hot-dip galvanized bolt has many advantages, which are summarized as follows: 1. The cost of hot-dip galvanized bolts treatment is low: the cost of hot-dip galvanizing antirust is lower than that of other coatings; 2. The hot-dip galvanized bolt is durable after hot-dip galvanizing: in the suburban environment, the standard hot-dip galvanized anti-corrosion thickness can [...]

By |August 29th, 2020|Bolt Types, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts|Comments Off on Advantages of Hot-dip Galvanized Bolt

Materials of High Strength Hexagon Bolts

Which materials of High strength hexagon bolts?  they are made of three kinds of materials. The details are as follows: Carbon steel: Generally, hexagonal bolt manufacturers distinguish low carbon steel, medium carbon steel, high carbon steel and alloy steel according to carbon content in carbon steel. 1. Low carbon steel C% ≤ 0.25% is usually [...]

By |August 27th, 2020|Bolt Types, Construction Bolts & Nuts, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts, Structural Bolts|Comments Off on Materials of High Strength Hexagon Bolts

Processing of Bolt Head and Thread

How is the bolt head and thread processed? The head of bolt is formed by cold upsetting plastic processing. Compared with the cutting process, the metal fiber (metal wire) is continuous along the product shape without cutting off in the middle. Therefore, the strength of the product is improved, especially the mechanical properties are excellent. [...]

By |August 25th, 2020|Anchor Bolts, Bolt Types, Bracket Bolt, Carriage Bolts, Countersunk Bolt, DIN International Standard, Expansion Bolt, Lag Screw Bolts, Plow Bolts, Ring Bolts|Comments Off on Processing of Bolt Head and Thread

How to Distinguish High Strength National Standard Bolt

The identification method of high strength national standard bolt mainly depends on five aspects: Look at the mark. Generally, the packing box of bolts has identification. It can be divided into 8.8, 10.9 and 12.9 grades. In general, there is no grade mark on the hexagonal plane of hexagon bolt, which is a common grade, [...]

By |August 23rd, 2020|Bolt Types, Carriage Bolts, Construction Bolts & Nuts, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts, Structural Bolts|Comments Off on How to Distinguish High Strength National Standard Bolt

Heat Treatment of American Hexagon Socket Bolts

There are 10 kinds of heat treatment methods for American hexagon socket bolts 1. Normalizing: the steel or steel parts are heated to the appropriate temperature above the critical point AC3 or ACM for a certain time and then cooled in air to obtain pearlite structure. 2. Annealing: the hypoeutectoid steel workpiece is heated to [...]

By |August 20th, 2020|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, Socket Head Bolts|Comments Off on Heat Treatment of American Hexagon Socket Bolts

Requirements for Heat Treatment High Strength Fasteners

Heat treatment high strength fasteners should be quenched and tempered according to the technical requirements. The purpose of heat treatment quenching and tempering is to improve the comprehensive mechanical properties of fasteners, so as to meet the tensile strength value and yield ratio specified by the product. Heat treatment process has a crucial impact on [...]

By |August 17th, 2020|A490, A563, ASTM International Standard, Bolt Types, Fastener, Heavy Hex Bolts, High Strength Structure Bolts|Comments Off on Requirements for Heat Treatment High Strength Fasteners

Advantages of High Strength Galvanized Bolts

High strength galvanized bolts are galvanized, so what are the advantages? Hot dip galvanizing is also used for the surface anti-corrosion of screws, bolts and nuts. The hot-dip galvanized screws have better corrosion resistance than the galvanized screws, but the cost is higher. The structural bolts with high strength are not suitable for hot-dip galvanizing. [...]

By |August 15th, 2020|Bolt Types, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Advantages of High Strength Galvanized Bolts

A325M Heavy Duty Hexagon Bolt Specification

Heavy duty hexagon bolt: 1. Standard: A325M 2. Grade: 4.8 / 5.8 / 6.8 / 8.8 / 10.9 / 12.9 ,  grade 2 / 5 / 8 3. Specification: m6-m24, 1 / 4 inch-1 inch 4. Length: 10mm-270mm,  1 / 2 inch-10 inches 5. Surface treatment: natural color, blackening, galvanizing, hot galvanizing, Dacromet 6. Packing: [...]

By |August 13th, 2020|A325, ASTM International Standard, Bolt Types, Bolts & Nuts Grade, Fastener, Grade 8.8, Heavy Hex Bolts|Comments Off on A325M Heavy Duty Hexagon Bolt Specification

Process of High Strength Blackening Bolt

As for the process of high strength blackening bolt, it is a blackening treatment process at room temperature, which can be divided into the following procedures. The first step is to clean the surface of high strength bolts. After that, the degreasing process is started. The high strength bolt must be completely immersed in the [...]

By |August 11th, 2020|A490, ASTM International Standard, Bolt Types, Construction Bolts & Nuts, Heavy Hex Bolts, Hexagon Bolt, High Strength Structure Bolts|Comments Off on Process of High Strength Blackening Bolt

Application of Countersunk Hexagon Bolt

The countersunk hexagon bolt is often used in machinery, which has the advantages of easy fastening, disassembly and not easy to slide angle. The hexagon wrench is generally a 90 ° bend, one end of the bend is long and the other side is short. When the short side is used to bolt, holding the [...]

By |August 9th, 2020|Bolt Types, Construction Bolts & Nuts, DIN International Standard, Hex Bolts, Hexagon Bolt|Comments Off on Application of Countersunk Hexagon Bolt

Classification of Hot Dip Galvanized Hexagon Bolts

Hot dip galvanized hexagon bolts are divided into ordinary and reamed ones. According to the head shape: there are hexagonal head, round head, square head, sink head and so on. The hexagon is the most commonly used. The countersunk head of hot-dip galvanized bolt is generally used in the place where connection is required. The [...]

By |August 7th, 2020|Bolt Types, Hex Bolts, Hexagon Bolt|Comments Off on Classification of Hot Dip Galvanized Hexagon Bolts

Application of High Strength Hexagon Bolt

Application of High Strength Hexagon Bolt is very widely, High strength hexagon bolts are usually used to connect thin metal plates. When connecting, the threaded bottom hole of the connected part is made first, and then the hexagonal combination screw is screwed into the threaded bottom hole of the connected part. Due to the high [...]

By |August 5th, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Application of High Strength Hexagon Bolt

Dacromet Process of Dacromet Hexagon Bolts

Dacromet is an advanced and complete metal surface treatment technology of dacromet hexagon bolts. It has the advantages and characteristics that other surface treatment can't match. 1. Excellent corrosion resistance. In salt spray test, 1 μ m ~ 3 μ m thick rainbow colored film will be corroded in 10 hours and corroded in 200 [...]

By |August 3rd, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts|Comments Off on Dacromet Process of Dacromet Hexagon Bolts

How to Distinguish High Strength Bolts

In order to distinguish high strength bolts, the following three methods are mainly used: With naked eyes, high strength bolts can be divided into high-strength external hexagon bolts and high-strength inner hexagon bolts. These high strength bolts are generally marked with strength grade and hardness grade. Generally, the screw head is marked with bolt grade. [...]

By |July 31st, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on How to Distinguish High Strength Bolts

Process of Stainless Steel Hexagon Bolt

The technological process of stainless steel hexagon bolt is as follows: 1. Normalizing: heat the stainless steel hexagon bolt to the appropriate temperature above the critical point AC3 or ACM, keep it for a certain time, and then cool it in the air to obtain pearlite structure. 2. Annealing: heating the hypoeutectoid stainless steel hexagon [...]

By |July 29th, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, Stainless Steel Bolts|Comments Off on Process of Stainless Steel Hexagon Bolt

Production Process of High Strength Hexagon Bolt

The following content is about the production process of high strength hexagon bolt. The production process of high strength hexagon bolt generally starts with the purchase of bolt wires. If you need to make high-strength hexagon bolts, you should first purchase the same specifications and models of bolts and wires. It is also necessary to [...]

By |July 26th, 2020|Bolt Types, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts|Comments Off on Production Process of High Strength Hexagon Bolt

How to Identify High Strength Bolts

Identify High Strength Bolts is also skilled, generally in this industry for a long time, you will learn the skill, the following is for everyone to sort out some of the knowledge. 1. Identification: there are obvious strength grade marks on the package of bolts manufactured by regular manufacturers. Such as 8.8, 10.9 and 12.9. [...]

By |July 24th, 2020|Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, High Strength Structure Bolts, Stainless Steel Bolts|Comments Off on How to Identify High Strength Bolts

Construction of High Strength Bolts

The following problems should be paid attention to in the construction of high strength bolts: (1) Surface rust, oil stain, burr and weld bead on bolt hole wall shall be cleaned. (2) After treatment, the contact friction surface shall meet the requirements of anti scratch coefficient. The high-strength bolts used shall be matched with nuts [...]

By |July 23rd, 2020|A325, A490, ASTM International Standard, Bolt Types, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts|Comments Off on Construction of High Strength Bolts