Screw shopping mall---one-stop service
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Screw shopping mall---one-stop service
A carriage bolt (also called coach bolt and round-head square-neck bolt)[1] is a form of bolt used to fasten metal to metal or, more commonly, wood to metal. Also known as a cup head bolt in Australia and New Zealand.
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.[2] 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 wrench, working from the opposite end. 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 on bare timber, the square section giving enough grip to prevent rotation.
The carriage bolt is used extensively in security applications, 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 gripped and rotated from the insecure side.
| Item | M4 M5 M6 M8 M10 M12 Coach Bolt Black Cup Head Square Neck Carriage Bolts | |||
Finish | ZINC, Plain | |||
Material | steel, carbon steel | |||
| Grade | ||||
Measurement system | Metric, inch | |||
Brand name | Zhuocheng | |||
Standard | DIN, ISO, GB | |||
| Application | Connection, Fastening | |||
| Size | M4-M20 | |||
Certificate | ISO9001-2008 | |||
Sample | Provided | |||
Service | Provided | |||
| Customization | Provided | |||
Single packaging size | 25*25*16CM | |||
Singe gross weight | 25kg | |||
Package type | carton+plastic bags | |||
(1)Small box packging | ||||
(2)25-30kgs/ctn in bulk, 36-48cartons/pallet | ||||
(3)Assortment in poly bag or plastic box | ||||
Delivery time | Quantity | Delivery time | ||
1-1000pcs | 3 days | |||
1001-5000pcs | 7 days | |||
5001-10000pcs | 9 days | |||
＞10000pcs | To be negotiated | |||
Wuxi Zhuocheng Mechanical Components Co., Ltd. is established in 1993, and one group of manufacturing and selling professional fastener , and often make DIN, ANSI, BS, ISO, JIS standard and high quality and professional fastener products in industrial fields, also have a professional quality control in development, process and manufacturing of various non-standard fastener. At present we develop 10,000 kinds of non-standard fasteners. We have a long-term business cooperation relationship with many well-known multinational companies, and provide an OEM service for the middle- big business enterprise. The products have already exported to the Unite States, Germany, England, Canada, Italy, Japanese etc.
Low MOQ
Good Price
CAD And 3D Design
Customized Service
OEM Service
ODM Service
ISO9001 Certificate
One-stop Service
Stable Product Quality
One-year Warranty
◉ You are a manufacturing company or trading company?
---We are a metal alloy manufacturing and we have years of export experience. we have a reasonable price.
◉ What quote do you offer?
---FOB , CIF and others ways according to your needs.
◉ How pay?
---All of kinds Payment we all accept from you
◉ How transport?
---Sea Freight, Air Freight and others Express Delivery ways for you.
◉ Can I order a small list?
---Of course,you can.
◉ Can we print our own logo?
---Yes, we can print logo for you.
◉ What is the quality of your products guarantee?
---We have passed ISO9001:2008 Quality Management System Certification, CQM Quality Management System Certification and IQNet Quality Management System Certification, If the quality doesn't accord with the standard, you can exchange the goods for free.
◉ Do you have after-sales service?
---Certainly,you can contact us at any time. Contacting info: You can contact with us by email
Take advantage of our unrivaled knowledge and experience, we offer you the best customization service.
If You Have More Questions, Write To Us
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They are all manufactured according to the strictest international standards. Our products have received favor from both domestic and foreign markets.
They are now widely exporting to 200 countries.
Wuxi Zhuocheng Mechanical Components Co., Ltd. is established in 1990, and one group of manufacturing and selling professional fastener
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