Carriage Bolt/Mashroom Bolt
DIN603 Carriage Bolt
A carriage bolt (also called coach bolt and round-head square-neck bolt is a form of bolt used to fasten metal to metal or, more commonly, wood to metal. Also known as a cup head bolt.
It is distinguished from other bolts by its shallow mushroom head and the fact that the cross-section of the shank, though circular for most of its length (as in other kinds of bolt), is square immediately beneath the head. This makes the bolt self-locking when it is placed through a square hole in a metal strap. This allows the fastener to be installed with only one tool, a spanner or wrench, working from one side. The head of a carriage bolt usually is a shallow dome. The shank has no threads; and its diameter equals the side of the square cross-section.
The carriage bolt was devised for use through an iron strengthening plate on either side of a wooden beam, the squared part of the bolt fitting into a square hole in the ironwork. It is common to use a carriage bolt to bare timber, the square section giving enough grip to prevent rotation.
The carriage bolt is used extensively in security fixings, such as locks and hinges, where the bolt must be removable from one side only. The smooth, domed head and square nut below prevent the carriage bolt from being unlocked from the insecure side.
ZINC, Plain, Zinc,HDG,phosphorization,Black,Geomet,Dacroment
Mild Steel, Carbon Steel
Place of Origin:
blue white color yellow black zinc plated carriage bolt
4.8/ 8.8/ 10.9/ 12.9 Ect
Machinery,Chemical Industry, Environmental,Building
1. 50kg or 25kg bags + pallet(selectable)
2. 25kg carton + pallet ( selectable)
3. Logo is customizable on bag/carton.
4. In Bulk.
1. Could you send me all your catalogue and price list?
As we have more than thousands of models, it is really very hard for us to send you all catalogue and price list for you. Please inform us the detail sizes you are interested in so that we can offer your the models and price list you want.
2. What’s your delivery time?
In generally, the delivery time
standard parts 15-20days
non-standard parts 20-35days
We will make the delivery as soon as possible with the guaranted quality.
3. What is the convenient way to pay?
Dear buyers,we are insisting on providing our customers the best service we can offer
L/C, T/T, West Union are accepted.
4. Can you send me free samples?
yes, of course. we can send customers free samples and customers should pay the freight.
At first ,we promise the good quality of our products.
Second, we want to build friendly and long term business relationship with each customers.
At last, we hope to be your partner ,not just customer.
2.100% tested before each shipment
3.Quickly shipping arrangement
5.BL.Packing list,commercial invoice or other documents will be sent soon