Cylinder-head hexagon socket screws, also referred to as hexagon socket bolts, cup-head screws and hexagon socket screws, but they represent the same product. Hexagon socket screws or hexagon socket bolts, are hexagon socket screws with cylindrical head and hexagonal drive holes.
Our hex socket head bolts has been certificated by ISO 9001 and IATF 16949. Hex socket head bolts are widely used in the fields of machinery and equipment, construction, automobile, railway and other industries.
Shanghai Jinrui Norm Parts Supplies Co.,Ltd is one of the leading hex socket head bolts manufacturers and suppliers in China. Shanghai Jinrui has been producing bolts and nuts since 2001. welcome to buy hex socket head bolts from our factory and company.
1. The Hex socket head bolts produced by our company all use the raw materials from well-known steel mills, and corresponding material reports can be provided..
2. The size has wide range, such as from M1.6-M36.
3. The Hex socket head bolts is made of high-quality steel, it has high thread precision, such as 6g, 6h etc. It is very smooth when matched with the nut.
4. Grade of Hex socket head bolts meets ISO standard, such as ISO898. Also our Hex socket head bolts has beautiful coating with good corrosion resistance. The toughness of the product covered with the coating will also be strengthened and will be more durable.
1,DIN912 Hexagon socket head bolts
d | M1.4 | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | ||
P | Thread Pitch | Coarse Thread | 0.3 | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 |
Fine Thread 1 | - | - | - | - | - | - | - | - | 1 | ||
Fine Thread 2 | - | - | - | - | - | - | - | - | - | ||
b | Reference Value | 14 | 15 | 16 | 17 | 18 | 20 | 22 | 24 | 28 | |
dk | Round Head | MAX | 2.6 | 3 | 3.8 | 4.5 | 5.5 | 7 | 8.5 | 10 | 13 |
Knurled Head | MAX | 2.74 | 3.14 | 3.98 | 4.68 | 5.68 | 7.22 | 8.72 | 10.22 | 13.27 | |
MIN | 2.46 | 2.86 | 3.62 | 4.32 | 5.32 | 6.78 | 8.28 | 9.78 | 12.73 | ||
da | MAX | 1.8 | 2 | 2.6 | 3.1 | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | |
ds | MAX | 1.4 | 1.6 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | |
MIN | 1.26 | 1.46 | 1.86 | 2.36 | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | ||
e | MIN | 1.5 | 1.73 | 1.73 | 2.3 | 2.87 | 3.44 | 4.58 | 5.72 | 6.86 | |
k | MAX | 1.4 | 1.6 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | |
MIN | 1.26 | 1.46 | 1.86 | 2.36 | 2.86 | 3.82 | 4.82 | 5.7 | 7.64 | ||
s | Nominal Size | 1.3 | 1.5 | 1.5 | 2 | 2.5 | 3 | 4 | 5 | 6 | |
MIN | 1.32 | 1.52 | 1.52 | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | ||
MAX | 1.36 | 1.56 | 1.56 | 2.06 | 2.58 | 3.08 | 4.095 | 5.14 | 6.14 | ||
t | MIN | 0.6 | 0.7 | 1 | 1.1 | 1.3 | 2 | 2.5 | 3 | 4 | |
w | MIN | 0.5 | 0.55 | 0.55 | 0.85 | 1.15 | 1.4 | 1.9 | 2.3 | 3 | |
d | M10 | M12 | (M14) | M16 | (M18) | M20 | (M22) | M24 | ||
P | Thread Pitch | Coarse Thread | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 |
Fine Thread 1 | 1.25 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2 | ||
Fine Thread 2 | 1 | 1.5 | - | - | 2 | 2 | 2 | - | ||
b | Reference Value | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | |
dk | Round Head | MAX | 16 | 18 | 21 | 24 | 27 | 30 | 33 | 36 |
Knurled Head | MAX | 16.27 | 18.27 | 21.33 | 24.33 | 27.33 | 30.33 | 33.39 | 36.39 | |
MIN | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 32.61 | 35.61 | ||
da | MAX | 11.2 | 13.7 | 15.7 | 17.7 | 20.2 | 22.4 | 24.4 | 26.4 | |
ds | MAX | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | |
MIN | 9.78 | 11.73 | 13.73 | 15.73 | 17.73 | 19.67 | 21.67 | 23.67 | ||
e | MIN | 9.15 | 11.43 | 13.72 | 16 | 16 | 19.44 | 19.44 | 21.73 | |
k | MAX | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | |
MIN | 9.64 | 11.57 | 13.57 | 15.57 | 17.57 | 19.48 | 21.48 | 23.48 | ||
s | Nominal Size | 8 | 10 | 12 | 14 | 14 | 17 | 17 | 19 | |
MIN | 8.025 | 10.025 | 12.032 | 14.032 | 14.032 | 17.05 | 17.05 | 19.065 | ||
MAX | 8.175 | 10.175 | 12.212 | 14.212 | 14.212 | 17.23 | 17.23 | 19.275 | ||
t | MIN | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
w | MIN | 4 | 4.8 | 5.8 | 6.8 | 7.8 | 8.6 | 9.4 | 10.4 | |
d | (M27) | M30 | (M33) | M36 | M42 | M48 | M56 | M64 | ||
P | Thread Pitch | Coarse Thread | 3 | 3.5 | 3.5 | 4 | 4.5 | 5 | 6.5 | 6 |
Fine Thread 1 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | ||
Fine Thread 2 | - | - | - | - | - | - | - | - | ||
b | Reference Value | 66 | 72 | 78 | 84 | 96 | 108 | 124 | 140 | |
dk | Round Head | MAX | 40 | 45 | 50 | 54 | 63 | 72 | 84 | 96 |
Knurled Head | MAX | 40.39 | 45.39 | 50.39 | 54.46 | 63.46 | 72.46 | 84.54 | 96.54 | |
MIN | 39.61 | 44.61 | 49.61 | 53.54 | 62.54 | 71.54 | 83.46 | 95.46 | ||
da | MAX | 30.4 | 33.4 | 36.4 | 39.4 | 45.5 | 52.6 | 63 | 71 | |
ds | MAX | 27 | 30 | 33 | 36 | 42 | 48 | 56 | 64 | |
MIN | 26.67 | 29.67 | 32.61 | 35.61 | 41.61 | 47.61 | 55.54 | 63.54 | ||
e | MIN | 21.73 | 25.15 | 27.43 | 30.85 | 36.57 | 41.13 | 46.83 | 52.53 | |
k | MAX | 27 | 30 | 33 | 36 | 42 | 48 | 56 | 64 | |
MIN | 26.48 | 29.48 | 32.38 | 35.38 | 41.38 | 47.38 | 56.26 | 63.26 | ||
s | Nominal Size | 19 | 22 | 24 | 27 | 32 | 36 | 41 | 46 | |
MIN | 19.065 | 22.065 | 24.065 | 27.065 | 32.08 | 36.08 | 41.08 | 46.08 | ||
MAX | 19.275 | 22.275 | 24.275 | 27.275 | 32.33 | 36.33 | 41.33 | 46.33 | ||
t | MIN | 13.5 | 15.5 | 18 | 19 | 24 | 28 | 34 | 38 | |
w | MIN | 11.9 | 13.1 | 13.5 | 15.3 | 16.3 | 17.5 | 19 | 22 | |
Standard | Material | Grade | Finish | Thread |
DIN933 | carbon steel | 4.6 | Plain | UNC |
Zinc plated | ||||
Alloy steel | Yellow zinc plated | |||
PTFE | ||||
Stainless steel | Black Oxide | UNF | ||
Dacromet | ||||
Other | HDG | |||
Other |
The application range of the products produced by the company is very wide. For example, hex socket head bolts are used in the fields of petrochemical industry, automobile manufacturing, construction, pressure piping, rail transit, steel structure engineering, large-scale power generation machinery facilities and infrastructure. Of course, in some specific positions in these areas, some other products will also be used, such as rail bolts, carriage bolts, U-bolts, flat head hexagon bolts, T-bolts, hex bolts and round head Hex bolts, etc.
Auto Manufacturing
Construction Field
Petrochemical Field
Pressure Piping
1. Inquiry
Fasteners have two types. One is standard parts, such as DIN912, hex socket head 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 DIN912, 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.
2. 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.
3. 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.
4. Quality Insurance
We buy PICC PRODUCTS LIABILITY INSURANCE for our products 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.
Company introduction and advantages
1. We are manufacturer of hex socket head bolts and nut for more than 20 years. We have two factories, one in Shanghai and the other in Jiangsu. Our production capacity can be 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples.
2. We have experienced quality inspection team and production team to strictly control the products of customers. We have certificates of ISO9001 and IATF16949.
3. We have a large amount of stock, whether it is large quantities or small quantities of goods are acceptable to buy.
4. We have more than 20 years of industry experience and perfect supply chain service, which can help customers to buy a variety of products.
FAQ
Q1: Are you a factory or trading company?
A: We are manufacturer of hex bolts and nut for more than 20 years . We have two factories, one in Shanghai and the other in Jiangsu. Our production capacity can be 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples.
Q2: How many years you do foreign trade?
A: 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.
Q3: Do you have enough outputs?
A: 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.
Q4: How to ensure that every process's quality?
A: 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.
Q5: How to ensure the safety of long-distance transportation?
A: 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.
Q6: What products can you customize?
A: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 .
Q7: Can you provide some sample?
A: Samples can be provided as your requirements.
Product FAQ
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.
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.
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.).
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.
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.
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
Hexagon bolt: A fastener consisting of a hex head and a screw that will be fitted with a nut to secure 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.