Hex Bolts

Inquiry

Fasteners have two types. One is standard parts, such as DIN933, hex bolts. The other is Non-standard parts. If you want standard parts, you can tell the standard, size, grade(material) ,coating and quantity. For example, you want to buy DIN933, M12X60,grade 8.8, zinc plated and 20000pcs.

If you want non-standard parts, you can show us samples, drawings or detail descriptions. Then our engineer will do the technical drawings for you.

Price and Payment

The price can be price/piece, or price/kg. We can quote EXW, FOB, CFR ,CIF with T/T, L/C, Western Union,etc. Or other ways agreed with customers.

Order

After checking, if the price and lead time are both ok, then we can confirm the order of bolt and nut. We will start to produce after deposit according the requirements we promise.

Quality Insurance

We buy PICC PRODUCTS LIABILITY INSURANCE every year. We can agree in the contract that we will replace the goods or refund the money if there are some quality issues after you get our products. If quality problems happen after use, we will track the goods to deal the problems. And our insurance policy can cover your lost.

Jinrui: Your Leading Hex Bolt Manufacturers

Company characteristics and advantages

We have our own factory, the production capacity can reach 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples.

We have experienced quality inspection team and production team to strictly control the products of customers.

We have a large amount of stock, whether it is large quantities or small quantities of goods are acceptable to buy.

We have more than 20 years of industry experience and perfect supply chain service, which can help customers to buy a variety of products.

Hex Bolts: The Ultimate FAQ Guide

What is a hex bolt?

A type of fastener consisting of a head and a screw (a cylinder with an external thread), which needs to be matched with a nut to fasten and connect 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 bolted connection is a detachable connection...

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What are hex bolts used for?

Hex bolts can be used in tight spaces to secure wood, metal, plastic and other materials. Hex bolts are commonly used in buildings, bridges, docks and highway structures, but you can find hex bolts in all industries and all homes. In most cases, you'll use a wrench or a spanner to tighten or loosen hex bolts.

How many types of hexagon bolts？

Hexagon bolts can be divided into inner hexagon bolts and outer hexagon bolts. The difference between the two is that the outer side of the screw head of the inner hexagon bolt is round, and the middle is a concave hexagon, and the outer hexagon bolt is what we usually see more Hexagon bolts with hexagonal sides on the head of the screw.

Hexagon socket head cap bolts are often used in machinery, and mainly have the advantages of easy fastening, disassembly, and not easy to slip. Allen wrenches are generally in the shape of a 90° curved ruler. One end of the bend is long and one side is short. When using the short side to drive screws, holding the long side can save a lot of force and tighten the screws better. The long end is divided into a round head (a hexagonal cylinder is similar to a sphere) and a flat head. The round head can be easily removed obliquely, and some parts that are inconvenient to lower the wrench can be installed.

The manufacturing cost of the outer hexagonal bolt is much lower than that of the inner hexagon. In addition, machines with low cost, low power strength and low precision requirements use much less hexagon socket bolts than outer hexagon sockets.

What are the advantages of hex bolts?

The characteristics of hexagonal bolts are that the tools are widely available, and they can deal with straight wrenches, adjustable wrenches, torx wrenches, socket wrenches, and have strong firm performance.

What are the specifications of hexagon bolts?

What grade hex bolt has?

The performance grades of steel structure connecting bolts are divided into more than 10 grades such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, of which the bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel, and are heat treated. Quenching and tempering is generally called high-strength bolts, and the rest are generally called ordinary bolts.

The property class for large hex bolts consists of two numbers representing the nominal tensile strength value and yield ratio of the bolt material...

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Hexagon bolt production process

The production process of screws is divided into 7 steps, namely annealing, pickling, wire drawing, forming, grinding, and heat treatment grade surface treatment.

Annealing process: The first treated product is put into the furnace and then closed with the furnace cover. One furnace can handle 8.4 tons at the same time. Then slowly raise the temperature to the specified temperature, this step takes 3-4 hours. Then slowly bring the temperature to 550 degrees, which will take 3-4 hours, and let the product cool down to room temperature naturally. This process can adjust the crystal structure, reduce the hardness, and improve the workability of the wire at room temperature...

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What materials are hexagon bolts usually made of?

At present, there are three main materials of hexagonal bolts on the market: carbon steel, stainless steel and copper.

(1) Carbon steel. We distinguish low carbon steel, medium carbon steel and high carbon steel and alloy steel by the content of carbon in carbon steel material.

1. Low carbon steel C%≤0.25% is usually called A3 steel in China. Foreign countries are basically called 1008, 1015, 1018, 1022, etc. Mainly used for grade 4.8 bolts, grade 4 nuts, small screws and other products without hardness requirements (Note: Drill tail screws are mainly made of 1022 material)...

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What is the standard for hexagon bolts?

DIN German Standard, GB National Standard, ASME/IFI/ANSI American Standard, Q Standard, PEM Standard, JB Standard Mechanical Department, EN European Standard, ISO International Standard, JIS Japanese Standard, HG Chemical Standard, NFE French Standard, UNI Italian Standard , BS British Standard, other commonly used standards.

What is a large hexagonal high-strength bolt?

Large hexagonal high-strength bolts belong to the high-strength grade of ordinary screws, and are mainly used in steel structure engineering to connect the connection points of steel structure steel plates.

What is the difference between Grade A and Grade B hexagon bolts?

The difference between grade A and grade B lies in the difference in accuracy. The manufacturing accuracy of grade A bolts is higher than that of grade B bolts, and the length of grade A threaded rod is also longer than that of grade B. Grade A bolts are commonly used It is used for the connection of important parts such as precise matching and anti-vibration; and B-level accuracy is mostly used for connections that are heavily loaded and frequently disassembled, adjusted or subjected to variable loads;

The difference between full thread and partial thread of hexagon bolt?

The thread is distributed along the entire length of the screw, which is called a full-thread bolt; the thread is distributed within a certain length of the screw tail, and the cross-section near the bolt head is a smooth circular bolt, which is called a half-thread bolt.

What is the difference between hexagon self-tapping screws and high-strength bolts?

1. It is the difference in structure. The shapes of hexagonal self-tapping screws and high-strength hexagonal bolts are different.

2. It is a functional difference. High-strength hexagonal bolts cannot be used without holes or threads, while hexagonal self-tapping screws do not need holes and threads, and they will solve it by themselves;

3. there is a difference in standards. Hexagon self-tapping screws and high-strength hexagon bolts apply to different standards.

What is the difference between Hexagon Bolts and hex socket screw?

The outer side of the screw head of the hexagon socket bolt is round, and the middle is a concave hexagon.

Hexagon socket head cap bolts are often used in machinery, and mainly have the advantages of easy fastening, disassembly, and not easy to slip. Allen wrenches are generally in the shape of a 90° curved ruler. One end of the bend is long and one side is short. When using the short side to drive screws, holding the long side can save a lot of force and tighten the screws better. The long end is divided into a round head (the hexagonal cylinder is similar to a sphere) and a flat head. The round head can be easily disassembled and disassembled, and some parts that are inconvenient to lower the wrench can be installed.

The manufacturing cost of the hexagon socket bolt is much lower than that of the hexagon socket. In addition, machines with low cost, low power strength and low precision requirements use much less hexagon socket bolts than outer hexagon sockets.

What is the difference between expansion bolts, chemical bolts, high-strength bolts and hexagon bolts?

Expansion bolts and chemical bolts are divided according to the form of connection with concrete. The expansion bolts are physically implanted into the concrete and tightly connected with it. After the bolts are forced to stand, they expand in the concrete. Chemical bolts use chemical substances to react with the bolt and the concrete surface, so that the two are closely connected. High-strength bolts are divided according to the material of the bolts. High-strength bolts are mainly used for anchor bolts or equipment, and the ultimate failure strength is relatively high. Hexagon bolts are divided according to the style of the bolt.

Why do many mechanical equipment use hexagon socket bolts? What are the benefits?

1. Bear more load. It has six force-bearing surfaces, which is more resistant to screwing than flat-blade screws and cross-shaped screws with only two surfaces.

Note: The material of hexagon socket head cap bolts is generally made of stainless steel, carbon steel, and alloy steel, which is basically the same as that of other types of screws. The higher the performance level, the greater the strength. When choosing screws, you must choose them strictly according to the requirements of use. For screws of suitable performance grades, different grades have different prices...

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What situations are big hexagon and torsional shear high-strength bolts suitable for? How to choose?

The key is the construction process. The big hexagon has higher requirements for construction, and can be familiar with the re-inspection of the torque coefficient, the management and operation of the electric constant torque wrench. At present, the bridge industry is the only one that can skillfully use large hexagon bolts. But the replacement of large hexagon bolts is easy.

The key to torsional shear bolts is the quality of the bolts, and the later construction is simple and convenient.

What Are Heavy Hex Bolts?

Heavy-duty hex bolts are a kind of hex bolts. Their heads are generally large. Commonly used A325, A325M, A490, A490M and other standards, and American Standard ASME/ANSI B18.2.1-1981, GBB1228 and other steel structure heavy-duty hex bolts...

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Hex Bolt Is Stripped?

Bolted connections are a common method of attachment. However, in the process of assembling agricultural machinery, the bolts may cause slipping, breaking and other failure phenomena due to various factors or improper assembly. In the process of bolt assembly on site, it mainly involves the angle of bolt tightening...

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How To Inspect Hex Bolts?

Bolt inspection is divided into manual and machine. Labor is primitive and is also used as a universal consistent detection method. In order to minimize the outflow of defective products, the general production enterprise personnel shall visually inspect the packaged or shipped products to eliminate defective products (quality issues including tooth injury, mixing, rust, etc.).

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How Are Hex Bolts Measured?

To measure hexagonal bolts, please use a caliper. Vernier caliper is a common tool for measuring hexagonal bolts. It is usually accurate to 0.01 cm, but it is more complicated than a tape measure. The measuring method is usually to measure the thread diameter and thread length.

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How Hex Bolts Are Made?

The production of hexagonal bolts is divided into several parts: the customer needs to provide samples, drawings or detailed data, and then select the production materials, and then need to be pickled and lubricated, and then subjected to wire drawing, wire cutting, and cold processing. Forging, trimming, and finally rolling into a semi-finished product. The semi-finished product needs to be heat treated and electroplated to be a finished product. Although the process is simple, the process of each part is very complicated.

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What Are Hex Flange Bolts?

Simply put, hexagonal flange bolts are hexagonal heads and flanges and threads. Although it looks similar to hexagonal bolts, under certain conditions, the role of hexagonal flange bolts is particularly prominent.

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Are you a manufacturer or trader of Hex bolts?

We are a manufacturer of hexagon bolts, of course we are not just a supplier of hexagon bolts,

Our products include the following six categories:

1. The main products of bolts include: metric and American round head oval neck bolts (also known as fishtail bolts), inner and outer hexagon bolts, hexagonal flange bolts, carriage bolts, wheel hub bolts, etc.

2. Stud products: full thread rods, double-ended studs, etc.

3. Nut products: hex nuts, flange nuts, heavy-duty nuts, square nuts, wing nuts, etc.

4. Screw products: self-tapping screws, self-tapping self-drilling screws, wood screws, various machine screws, etc.

5. Washer products: flat washers, elastic washers, square washers, locking washers, etc.

6. Fastener related non-standard products.

Do you have the relevant certification for hex bolts?

Of course, we have obtained ISO9001:2000 international quality system certification in 2001, and IATF16949 automotive quality management system certification in 2012, and our products are underwritten by the People's Insurance Company of China "Global Product Liability Insurance", we We will ensure that every screw is used with confidence by customers.

How many years you do foreign trade?

We have more than 20 years experience in exporting products to worldwide countries with our best quality. Now we have exported more than 40 countries, such as Spain, Germany, Italy, Belgium, United Kingdom, Lithuania, USA, Canada, Australia, Singapore,Japan, Thailand, Malaysia, South Korea,Indonesia, Egypt, Philippines and so on.

How do you guarantee the quality of hexagon bolt ?

We have a strict quality management system, equipped with a professional quality control team, and have passed the ISO9001HE IATF 16949 certification successively. And with the official operation of the Haian production base, we have formed a more complete industrial chain, from raw material pickling, wire drawing, molding, tooth rolling, heat treatment, packaging, etc. can be completed in the factory. In line with the business philosophy of pioneering and innovative, and pursuing excellence, Jinrui has successively purchased spheroidizing furnaces, mesh belt furnaces and dozens of multi-model head screw forming machines, nut forming machines, thread rolling machines, tapping machines, etc., and established Covering a full-scale wire drawing production line and a fully automated three-dimensional warehouse...

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How do I choose the right hex bolt?

Hey, friends, this depends on your own needs. It is not that the higher the price and the better the quality, it will be suitable for you. According to your usage scenario, choose the right product with limited funds, this may be what you need.

Can you provide samples of hex bolts?

Of course you can, but please understand, my friend, the cost of the samples and shipping is your responsibility.

Can hex bolts be customized according to our needs?

Of course, my friend, these require you to provide technical drawings or detailed dimensions or samples of customized products, and also need to specify your requirements for material, grade, finish and quantity. Of course, I hope you understand that for custom products, a new mold usually needs to be made, so if you need a sample, you should pay for the mold.

What products can you customize?

One is standard parts, such as DIN933, hex bolts. The other is Non-standard parts. If you want standard parts, you can tell the standard, size, grade(material) ,coating and quantity. For example, you want to buy DIN933, M12X60,grade 8.8, zinc plated and 20000pcs.

If you want non-standard parts, you can show us samples, drawings or detail descriptions. Then our engineer will do the technical drawings for you.

There are many, such as hexagon bolts, flange bolts, round head square neck bolts, as well as track bolts, U-bolts, T-bolts, flat head hexagon bolts, hex nuts, hex flange nuts.

Do you have enough outputs?

We have enough stock in warehouses with abundant capital. We offer 24-hour services. For most common standards, we have them on stock, such as hex bolts, hex nuts, etc.

How to ensure that every process's quality?

First, we have technical drawings for each product when producing.

Second, our workers most have more than 10-years experience of doing hex bolts.

Third, our QC people will do inspection every 2 hours. If finding the bad parts, they will stop the porduction immediately.

Then, the finished parts will be checked again before shipment which insures every product's quality.

What is your MOQ for HEX BOLTS?

We have most sizes of hex bolts in stock. So if we have stock, the MOQ will be less, hundreds or thousands of pieces is OK. If we do not have stock, usually the MOQ is 1 ton, the pieces quantity will depend on the size. So the best way is to check with us about your inquiry.

How do I order hex bolts?

1. You can send us the inquiry which includes the bolts type. size,grade, quantity. Coating,etc.

2. We will quote you the price based on the inquiry.

3. Then we send you the PI with bank information. You can pay.

4. We prepare the bolts and send to you. It can be EXW&CIF&FOB or door to dooer.

5. You receive the goods. You use them or sell them. We can send you test report, material report, and other quality documents.

6. We can help you solve the using or design problems after-sale. Also if any quality problem, we will take the responsibility to replace the goods.

What is the payment terms?

For new customers, Jinrui’s payment term is T/T, 30% advance payment, and 70% balance payment before shipment.

For old customers with certain conditions, the payment terms can be 30% advance payment and rest against B/L. Or we can discuss some other payment terms.

How to ship hex bolt?

We pack the hex bolts in pallets and ship our by sea, or by air.

Usually the hex bolts package is 20-25 kgs/carton, and 36 cartons/pallet.

How to ensure the safety of long-distance transportation?

We pack into cartons first, and then pack cartons on pallets. The pallet is very easy to lift by Forklift wihch will protect the cartons from damage. Professional packing teams which keep every packing safely.

What is the lead time of hex bolts?

The lead time of hex bolts is usually 5-30 days. For stock hex bolts, the lead time will be send out in 5 days. For producing hex bolts, the lead time will be about 20-30 days.

What are the causes of broken ends of hexagon bolts?

1. The way of force

Bolts are generally subjected to various external forces during use, such as tensile, bending, compression and other external forces. These external forces may exist at the same time. When multiple external forces are applied to the bolt at the same time, especially in the case of overload, Bolts are likely to break.

In order to prevent this phenomenon, we should choose appropriate materials and specifications when selecting bolts to increase the compressive strength and tensile capacity of the bolts...

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Where should you buy hex bolts?

At least buy from capable and powerful manufacturers. Powerful manufacturers can meet your product needs, and terminal factories can also make you pay lower prices than traders. If you haven't made a decision yet, consider our Shanghai Jinrui Standard Parts Co., Ltd. The factory covers an area of more than 20,000 square meters, with a total investment of over 100 million yuan and an annual output of 20,000 tons. Our products are exported to more than 40 countries at home and abroad, and have been well received by customers. The company has a strict quality management system, equipped with a professional quality control team, and has passed ISO9001 and IATF 16949 certification successively...

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What is the price of hex bolts?

The cost of hex bolt includes raw material+producing cost+hear treatment+coating cost+packing cost +inspection cost+shipping cost. So the price may be affected much by raw material price, or other factors. Usually the price is thousands of dollars per ton. It depends on the grade, quantity, coating,etc.

What are the best hex bolts?

The most suitable hexagon bolt is the best hexagon bolt, because it is difficult to define purely in terms of price and quality. The price of hexagon bolts will change, and the quality will also become better with the development of new processes, so instead of looking for the best, it is better to choose the most suitable hexagon bolts, the right price plus compliance with standards and customer needs The bolts are undoubtedly the best.

What is the difference between hexagon flange bolts and hexagon bolts?

Hex bolts are the most widely used type of bolts. Hexagon Bolt Manufacturer's Class A and Class B bolts are used in critical applications where high assembly accuracy is required and high shock, vibration or alternating loads are tolerated. Grade C bolts are used for occasions where the surface is relatively rough and the assembly accuracy is not high. The threads on the bolts are generally ordinary threads. Common threaded bolts in West Asia have good self-locking performance. They are mainly used in thin-walled parts or where they are subjected to shock, vibration or alternating loads. Generally, bolts are partially threaded, and full-threaded bolts are mainly used for bolts with short nominal lengths and occasions where longer threads are required...

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What is the difference between a stud and a hex bolt?

The difference between studs and hexagon bolts is the end, studs have threads at both ends, and hexagon bolts have one end of the thread and one end of the head is an external hexagon. Both ends of the double-ended stud are threaded, and one end must be fully screwed into the screw holes of the connected parts, which is called the screw-in end; the other end is used to tighten the nut, which is called the tightening end. Hexagon bolt: A type of fastener consisting of an external hexagon head and a screw (a cylinder with an external thread).

How to choose the best hex bolt manufacturer and what to consider?

1. Strong production capacity and good product quality;

Generally speaking, strong manufacturers can provide a variety of different specifications and models of hexagonal bolts. Common specifications and models are in sufficient stock. It can be produced without customer order and can be delivered in time. In addition, it has the ability to accept a large number of customized orders, and can arrange enough manpower to produce hexagonal bolts that meet customer requirements at a certain time. For the quality of goods, it is required that the thread can pass through the gauge, and the tolerance is within the allowable range of the specification.

2. High technical content and good product price.

A reliable manufacturer should have adequate technicians and complete equipment. You can check the manufacturer's commodity quantity, product variety, production capacity, and after-sales service. Buyers should try their best to find strong manufacturers for cooperation. Buyers need to buy hexagon bolts from regular and reliable manufacturers. Buying directly from the manufacturer has many advantages, not only in price, but also in a more comprehensive service.