Jiaxing Haina Fastener Co.,Limited
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Stainless Steel 304 316 Hardened Plain Finish Coach M12 carriage bolt
1.Product Description
The carriage bolts , alos knowns as coach bolts or mushroom head (round head)square neck bolts, is a form of bolt which used to fasten metal to wood. The carriage bolts are features by its round head and square neck. This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The carriage bolts are put into a hole which are the same size as the shank of it and then to be hammered in the rest of the way, and the square shoulder locks it tightly. While used a smooth finish surface is needed commonly in order that nothing becomes fixed on the fasteners. It is commonly to use them on bare timber, the squared neck giving enough grasp to prevent rotation. Carriage bolts is a round-headed bolt for timber, full threaded along its shank, being inserted into drilled holes. The carriage bolt has a square shoulder under a rounded head which can fasten unremovable when the nut is tightened. They are good for wood connected with wood when the head may not be approachable for tightening. They may be used in the construction of docks, swing sets and decks as well as other surfaces where a smooth finish is required.
Carriage bolts are extensively used in security fixings where the bolt must only be removable from one side. The smooth domed head and square neck below prevent the carriage bolt from being unlocked from the insecure side. The sqaure neck inserted into wood to prevent bolt turning while the nut is tightened.
2. Specification
| Diameter | Pitch | Length | High of Head | Neck Subtense | High of Neck |
| M12 | 1.75mm | 80mm | 6.05-6.95mm | 11.3-12.8mm | 7.25-8.75mm |
More details:
| Product Dimensions | M12 x 80mm |
| Item Weight | 87kg 1000 pieces |
| Standard | DIN603-1981 |
| Free Sample | Available, only shipping need to be charged |
| Thread type | Full Thread/ Coarse Threaded |
| Advantages | Corrosion Resistance,High Tensile, offer high holding power |
3.Application
It is commonly to use them on bare timber, the squared neck giving enough grasp to prevent rotation. General Fastening applications where need high strength and superior corrosion resistance. Carriage bolts are extensively used in security fixings where the bolt must only be removable from one side. Typical applications Construction, Machine repairs, outdoors. Designed for using in high-stress and high-strength applications. The sqaure neck inserted into wood to prevent bolt turning as the nut is tightened.
4.Advantages
Common chioce for fastening, which provide high tensile, offering high holding power and corrosion resistance and don't need any coating. Competitive prices with professional factory supply. Perfect fastening solution with 10 years experiences to solve your problem: Wide range of parts selection. Durability testing and critical technical design to enhance fasteners lifetime.
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