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Flat Head Carriage Bolt

Flat Head Carriage Bolt is a threaded fastener with external threads. It has passed durability tests and key technical tests and has a long service life.

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As a manufacturer based in China, we are proud to offer our high-quality Flat Head Carriage Bolt to merchants worldwide. Our product has been designed, developed, and tested with the end-users in mind, providing them with an unparalleled level of durability, strength, and reliability. Our commitment to quality assurance has guaranteed that our Flat Head Carriage Bolt is up to the industry standards set forth by both domestic and international markets.


Product Description:


Our Flat Head Carriage Bolt is an essential fastener that is commonly used in numerous applications, including construction, automotive, and machinery industries. The flat head design of our bolts provides ample contact with the surface, giving better support and less stress on the material compared to other designs. Our bolts have a diamond-shaped neck underneath the flat head, which helps it stay securely in position, preventing it from spinning or pulling through the material.


Our Flat Head Carriage Bolt is made from durable and corrosion-resistant materials, ensuring its longevity and performance in different environments. We use high-quality carbon steel that has been treated with heat and tempering, which enhances its strength and resilience. The bolts are then coated with a zinc plating, which provides superior protection against rust, oxidation, and other corrosive elements.




Our Flat Head Carriage Bolt offers numerous advantages to our customers, such as:


1. Strong and Durable: Our bolts are made from high-quality carbon steel, ensuring their strength and durability.


2. Corrosion-Resistant: Our bolts are zinc-plated, providing excellent protection against rust and other corrosive elements.


3. Secure fastening: The diamond-shaped neck beneath the flat head design ensures the bolt stays securely in position.


4. Wide Range of Applications: Our bolts are versatile and can be used in numerous applications, such as construction, automotive, and machinery industries.


5. Easy Installation: Our bolts are easy to install and require minimal tools and time.




Our Flat Head Carriage Bolt is a reliable and cost-effective fastener that can enhance any product's performance. Its superior design, durability, and corrosion-resistant properties make it ideal for a wide range of applications, including construction, automotive, and machinery industries. With our commitment to excellence and quality assurance, merchants can trust us to provide them with a product that meets their needs, exceeds their expectations, and enhances their customer's satisfaction. So, if you want to purchase a high-quality, reliable, and versatile Flat Head Carriage Bolt, look no further than our company.



Flat Head Carriage Bolt is a threaded fastener with an external thread. After many durability tests and key technical tests, it has been shown that this product has good performance in terms of strength, hardness and corrosion resistance, so it has a long service life. The materials and sizes of the product are various to meet the needs of different users. Of course, we can also customize according to customer needs. Trust us and try our product, it won't let you disappointed.


1. It can bear large loads.

2. The unique flat head design enables the product to be well embedded inside the target object so that to ensures the beauty of the outer surface of the target object.

3. The installation is convenient, which greatly facilitates the user.

4. It will not loosen or fall easily from the wall.

Product Details

● Product Type: Bolts/Screws

● Product Name: Flat Head Carriage Bolt

● Size: M5-M14; #0-#12;1/4-9/16;ST2.9-ST9.5;Special size can be enquired and supported

● Product Executive Standards: ANSI, DIN, ISO, GB;or Per customer's drawing

● System of Measurement: Metric/Inch

● Head type: Button Head; Pan Head; CSK Head; Truss Head; Round Head; Cheese Head;etc.

● Material: Low carbon steel / medium carbon steel / alloy steel/Stainless steel /Copper & copper alloy/Aluminium &Aumium Alloy/etc.

● Grade: Quenching and tempering heat treatment—4.6/4.8/5.6/5.8/6.8/8.8/9.8/10.9/12.9/Grade 5/ Grade 8

Case harden-- Surface hardness min450HV

core hardness 270 ~ 390HV/290~370HV


● Support non-standard customization

● Country of Origin: China

Quality Control

1.Strict contract auditing invloved all departments to assure the feasibility of each order.

2.Process design and validation before bulk production.

3.Strictly control on all raw and auxiliary materials, All raw materials reach the world advanced level.

4.On-site inspection to all processes, inspection record keep traceable for 3 years


Our advantages and services

1. Well-equipped with extensive sales network.

2. Advanced Production equipment and production technique.

3. Competitive Price (Factory direct price) with our good service.

4. Different designs are available according to customer requests.

5. Excellent quality testing equipment, 100% inspection on critical .



Why choose us?

  • Our Bolts and Screws products have received excellent feedback from our satisfied customers around the globe.
  • We keep pace with the times to adapt to the rapidly changing Flat Head Carriage Bolt market, and wholeheartedly provide customers with better and more efficient services.
  • Our Bolts and Screws products are corrosion-resistant and can withstand extreme weather conditions.
  • We cooperate with our customers, partners and friends to innovate and expand the value of the Flat Head Carriage Bolt industry.
  • As a Chinese factory, we specialize in producing high-quality Bolts and Screws products with professional services.
  • Our company gives full play to the advantages of products, and occupies the mid-range system market with highs and lows.
  • We supply Bolts and Screws products to various distributors, wholesalers, and retailers worldwide.
  • We sincerely treat everyone who has or will become our customer!
  • Our company values transparency and honesty, ensuring that our customers are informed every step of the way when purchasing our Bolts and Screws products.
  • We have established in-depth strategic partnerships with distributors and customers.

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