Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of a4-316 stainless steel carriage bolts corrosion-resistant square neck fasteners in China. Welcome to buy bulk high quality a4-316 stainless steel carriage bolts corrosion-resistant square neck fasteners made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
About Us
We are Hebei Kappa Metal Products Co., Ltd., located in Yongnian District, Handan City, Hebei Province, China.
Product Introduction – Carriage Bolts
Our carriage bolts are manufactured from high-quality 316 stainless steel, offering excellent corrosion resistance for outdoor and extremely humid environments. They comply with DIN603 standards, and we also offer ANSI/ASTM/ISO/GB equivalents to meet diverse international requirements. In addition, we provide customization services for dimensions, logos, and head markings to suit your specific needs.
Stock and Delivery
We maintain substantial inventory and ensure prompt delivery at all times.
Description:
FAQ
Q: How to install a carriage bolt correctly?
A:
1.Pre-drilling: Drill a hole on the connected component that matches the diameter of the bolt.
2.Inserting bolt: Insert the bolt from the side where the dome head is located, so that the square neck fits into the hole.
3.Fixed nut: Put a washer and the nut on the other side, then tighten the nut with a wrench. At this point, the square neck will prevent the bolt from rotating.
Q: How to dismantle a rusty or jammed carriage bolt?
A: You can spray penetrating lubricant onto the bolt connection to help loosen the rust. If the square neck cannot grip due to rotation, you can use a vice grip (Vice Grips) to hold the bolt shaft and assist in disassembly.
Q: Do I have to use a washer when installing?
A: It is strongly recommended to use a washer. The washer can increase the contact area, distribute the pressure generated when tightening the nut, and prevent the bolt head from sinking into the wood or damaging the surface of the workpiece.
Q: The bolt is rotating while being installed and it won't tighten. What should I do?
A: This is usually because the square neck below the head has not fully entered the material. You can try gently tapping the bolt head with a hammer to position it properly, ensure the square neck is embedded, and then tighten the nut.
Quality Test
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