Round head single tenon bolt

The head of the Round head single tenon bolt is round. There are threads on the screw, and there is also a single tenon in the middle, which is a small protrusion. This tenon is produced in accordance with metric standards and can be used in combination with various nuts.

Product details

The bolt can be used to fix the fence of the crib. The round head can prevent sharp edges from appearing, and the single tenon has a firm grip and will not tear the cork. In this way, parents can sleep peacefully without worrying about the screws loosening and affecting the safety of the baby.

The Round head single tenon bolt can be used to install the sliding rails of cabinet drawers. Drill holes in the side panels and slide rails of the cabinet, align the bolts and tenons with the holes and insert them in, then tighten the nuts. The slide rails will be fixed in place. The single tenon can ensure that the position of the slide rail does not deviate, and the round head will not affect the opening and closing of the drawer. When pulling and pulling, it is smooth without jamming.

The Round Head Square Neck Bolt can ensure the stability of the crib fence. Round head without sharp edges, single tenon can be firmly grasped without tearing the cork. Parents can sleep peacefully and you don't need to worry about the screws loosening.

Product parameters

Product selling point

The greatest advantage of the Round head single tenon bolt is that it is "firmly fixed and quickly installed". The round head can evenly distribute the pressure and will not crush the material. The single tenon can be clamped into the pre-drilled hole. When tightening the nut, the bolt won't rotate along, saving a lot of trouble. Moreover, metric specifications are easy to find accessories. Whether it's repairing things or assembling, you don't have to worry about not matching them.

Product specifications and grades

Round head single tenon bolt comes in various specifications and grades to fit different applications. In terms of specifications, the main differences are in diameter and length. Diameters usually range from 4mm to 20mm, while lengths go from 10mm up to 150mm—you can pick the right size based on the thickness of the components to be connected. The thread types include coarse thread and fine thread; coarse thread is more common for general use, while fine thread is for situations that need precise adjustment. For grades, the common ones are 4.8 and 8.8, which indicate tensile strength. Grade 4.8 is suitable for light-load connections, like small household appliances or light mechanical parts. Grade 8.8 is higher strength, used for heavier loads, such as industrial machinery components. Each specification and grade is clearly marked on the packaging, making it easy to identify and select the right one for specific needs.

Q&A Session

Can Round head single tenon bolt be customized?

Yes, we can customize Round head single tenon bolt according to your drawings or specific requirements. Customizable parameters include diameter (from M4 to M12), length (from 15mm to 200mm), tenon shape, and surface treatment. For example, we can make the tenon longer for deeper hole connections or add anti-slip threads for better stability. Custom production takes 7–12 working days for small batches and 18–25 days for large orders. We’ll send a sample for your confirmation before mass production.  

Product Material

Class 10.9 high strength insulated joint bolts are mainly made of alloy steel as the base material. This alloy steel is a combination of carbon steel and other elements like chromium, molybdenum and manganese, which gives the bolts the high strength required for Class 10.9 grade. The insulated part is usually made of engineering plastics, such as PTFE or nylon, which have good insulation performance and can prevent electrical conduction between connected components. Before the insulation layer is applied, the alloy steel base undergoes heat treatment to enhance its tensile strength and hardness. The plastic insulation layer is closely attached to the bolt surface through molding or coating processes. The material selection focuses on meeting both high strength requirements and insulation performance, ensuring the bolts can work stably in scenarios that need both load-bearing capacity and electrical isolation, like electrical equipment or industrial control systems.

Product transportation costs

The transportation cost of Class 10.9 high strength insulated joint bolts varies based on several factors. First, it depends on the order quantity. Small batches shipped by express usually cost more per unit, while large batches shipped by sea or land freight are more cost-effective. The destination also matters—shipping to nearby regions is cheaper than long-distance or international destinations. International shipping may include additional costs like customs fees and insurance, which are part of the total transportation cost. The packaging weight and volume affect the cost too, since freight is often calculated by weight or volume, whichever is higher. Most suppliers can provide a detailed freight quote based on your specific order quantity and delivery address. If you need urgent delivery, expedited shipping options are available but will increase the transportation cost accordingly.