Professional China Square Bolt - Marble mounted carriage bolts for dry hanging parts – Zonolezer

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Professional China Square Bolt - Marble mounted carriage bolts for dry hanging parts – Zonolezer Detail:

Product name: Carriage Bolt
Size: M5-20
Length: 10-500mm or as required
Grade: 4.8 6.8 8.8 10.9
Material Steel: Steel/35k/45/40Cr/35Crmo
Surface: Plain, Black, Zinc Plated, HDG
Standard: DIN603 ASTM A307
Certificate: ISO 9001
Sample: Free Samples
Usage: Carriage bolts can be used for marble mounting of dry pendants. It won’t loosen when tightening, easy to fix. It is mainly used where countersunk head screws are required. In addition, carriage bolts are used in the grooves. During the installation process, the square neck is stuck in the grooves, which can prevent the bolts from rotating, and the carriage bolts can move in parallel in the grooves. Since the head of the carriage bolt is rounded, there are no cross recesses or sockets. The design of the existing power tools, such as in the actual connection process, can also play the role of anti-theft.

DIN 603 – 2017 Cup Head Square Neck Bolts

191_en QQ截图20220715154631

Carriage bolts are also known as semi-circular head square neck bolts, the head is semi-circular head type, and the bottom is a square neck.

Zonolezer Fastener will answer for you, the carriage bolt has a good fixing effect, and the square neck just catches the bolt to facilitate the nut to be tightened. At the same time, it also has a good anti-theft effect, because the head is semi-circular and has no grooves. It can be used for the connection of iron-wood structures, such as automobiles, textile machines, flour machines, lifeboats, etc.

Bolts need to be connected. Generally speaking, they need to be fixed by light holes and matched with nuts. A single connection cannot be used.

The implementation standard of carriage bolts, Fangyuan carriage bolt factory will answer for you, ordinary carriage bolts are divided into GB/T12 type and GB/T14 type, collectively referred to as the national standard carriage bolt. GB12 is a carriage bolt with a small head and a high hat, which is generally used in places where the size of the head is not required. Compared with GB14, it is a large carriage bolt, and the thickness of the head is also smaller than that of GB12. In addition, there are high-strength carriage bolts, also known as reinforced semi-circular head square neck bolts. The implementation standard is GB794, the strength is 8.8, 10.9, and 12.9. After the modulation flange treatment, the surface is usually oxidized black. According to customer requirements, the surface treatment is also galvanized hot-dip galvanized and color galvanized. The German standard carriage bolt implementation standard is DIN603. Compared with the national standard carriage bolt, the head is larger, the square root is shorter, and the thread is the same as the metric thread. Generally, export carriage bolts are mostly German standard DIN603 carriage bolts. Zonolezer has perfect equipment and technology, and has rich experience in export trade carriage bolts. American carriage bolts (ANSI/ASME) are also mostly carriage bolts for export, and the screw thread is metric standard, which is different from the above standard. Nut size, square root height, material requirements, and surface treatment can be customized according to user requirements.

The above are commonly used carriage bolt standards, as well as rough round head square neck bolts (BS325), grooved square neck bolts (JIS B 1171), metric round head carriage bolts (BS4933), and flat head bolts for agricultural machinery (DIN11015) , Large semi-circular head square neck bolts (CNS4425) for textile machines, small semi-circular head short square neck bolts (IOS8678), etc., are generally custom-made.


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Professional China Square Bolt - Marble mounted carriage bolts for dry hanging parts  – Zonolezer detail pictures


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