English 
Product introduction
The characteristic of the semi-circular head square neck bolt is that the top is connected in series with a semi-spherical ball, and a square neck is made below the left side. Insert this bolt in the connected part, and then screw on the nut, because the square neck, the bolt will not rotate with it. Its head is relatively smooth, it is not easy to catch other objects
Product parameter (specification)
MON | M6 | M8 | M10 | M12 | M16 | M18 |
P | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
E MIN | 7.64 | 10.2 | 12.8 | 15.37 | 20.57 | 25.73 |
K1 MAX | 3 | 3 | 4 | 4 | 5 | 5 |
K1 MIN | 2.4 | 2.4 | 3.2 | 3.2 | 4.2 | 4.2 |
K MAX | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 |
K MIN | 3 | 4 | 5 | 6 | 8 | 10 |
R MIN | 0.5 | 0.8 | 0.8 | 1.2 | 1.2 | 1.6 |
S MAX | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
S MIN | 5.88 | 7.85 | 9.85 | 11.82 | 15.82 | 19.79 |
Product feature and application
According to the size of the head, this kind of bolt is divided into ordinary and large semi-circular head.
The head of the large semi-circular head square neck bolt is straight and large in diameter, but its thickness is slightly thin. This kind of bolt is mostly used in trucks, barges, iron-wood looms, and other wooden structural parts.
Due to the large head support surface, it is not easy to fall into the wooden connected parts. Both types of semi-circular head square neck bolts are rough bolts.
Production details
The head of the square neck bolt with large semi-circular head is straight and large in diameter, but its thickness is slightly thinner.
The semi-circular head square neck bolt has the characteristics of high precision, high toughness and high quality.
Production qualification
Our factory mainly produces stainless steel fasteners and various non-standard customized stainless steel products. We have more than 10 technical patent certificates, as well as CE certification, SAC / TC 85, ISO90001, CQM quality certification standard certificates and so on.
Deliver shipping and serving
Package: Cartons & pallets or according to customer's requirement.
We will use cartons and cartons for packaging. Then wooden pallets and wooden boxes will be used for outer packaging. If customers have special packaging requirements, we will do packaging according to customer needs.
Shipping method: We can provide various shipping methods such as sea, air and mail. We can also provide transportation services according to the special needs of customers.
Our services and advantages
1. We are a factory and we have the right and strength to design and produce.
2. Hex head bolt samples are free.
3. We will answer your inquiry within 24 hours.
4. After sending, we will track the product for you every two days until you get the product.
5. When you receive the goods, test them and give me feedback. If you have any questions about our goods, we will provide you with solutions.
Product introduction
The characteristic of the semi-circular head square neck bolt is that the top is connected in series with a semi-spherical ball, and a square neck is made below the left side. Insert this bolt in the connected part, and then screw on the nut, because the square neck, the bolt will not rotate with it. Its head is relatively smooth, it is not easy to catch other objects
Product parameter (specification)
MON | M6 | M8 | M10 | M12 | M16 | M18 |
P | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
E MIN | 7.64 | 10.2 | 12.8 | 15.37 | 20.57 | 25.73 |
K1 MAX | 3 | 3 | 4 | 4 | 5 | 5 |
K1 MIN | 2.4 | 2.4 | 3.2 | 3.2 | 4.2 | 4.2 |
K MAX | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 |
K MIN | 3 | 4 | 5 | 6 | 8 | 10 |
R MIN | 0.5 | 0.8 | 0.8 | 1.2 | 1.2 | 1.6 |
S MAX | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
S MIN | 5.88 | 7.85 | 9.85 | 11.82 | 15.82 | 19.79 |
Product feature and application
According to the size of the head, this kind of bolt is divided into ordinary and large semi-circular head.
The head of the large semi-circular head square neck bolt is straight and large in diameter, but its thickness is slightly thin. This kind of bolt is mostly used in trucks, barges, iron-wood looms, and other wooden structural parts.
Due to the large head support surface, it is not easy to fall into the wooden connected parts. Both types of semi-circular head square neck bolts are rough bolts.
Production details
The head of the square neck bolt with large semi-circular head is straight and large in diameter, but its thickness is slightly thinner.
The semi-circular head square neck bolt has the characteristics of high precision, high toughness and high quality.
Production qualification
Our factory mainly produces stainless steel fasteners and various non-standard customized stainless steel products. We have more than 10 technical patent certificates, as well as CE certification, SAC / TC 85, ISO90001, CQM quality certification standard certificates and so on.
Deliver shipping and serving
Package: Cartons & pallets or according to customer's requirement.
We will use cartons and cartons for packaging. Then wooden pallets and wooden boxes will be used for outer packaging. If customers have special packaging requirements, we will do packaging according to customer needs.
Shipping method: We can provide various shipping methods such as sea, air and mail. We can also provide transportation services according to the special needs of customers.
Our services and advantages
1. We are a factory and we have the right and strength to design and produce.
2. Hex head bolt samples are free.
3. We will answer your inquiry within 24 hours.
4. After sending, we will track the product for you every two days until you get the product.
5. When you receive the goods, test them and give me feedback. If you have any questions about our goods, we will provide you with solutions.
