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Hexagonal Countersunk Head Bolts

Short Description:

  • Standard:
    GB70.3 / DIN7991
  • Name:
    carbon steel hexagonal countersunk head bolts
  • Material:
    carbon steel
  • Grade:
    Grade 8.8, Grade 10.9
  • Alias:
    flat cup hexagonal screws
  • Nominal diameter:
  • Tooth pitch:
  • Length:
  • Surface treatment:
  • Acceptance: OEM/ODM, Trade, Wholesale, Regional Agency

    Payment: T/T, L/C, PayPal

    We are based in China, we have our own factory. We are your best choice and most dependable business partner among many trading companies.

    We are happy to respond to any inquiries; please send your questions and orders.

    Stock Sample is Free & Available

    Product Detail

    Product Tags

    Description of Hexagonal Countersunk Head Bolts

    Carbon steel hexagonal countersunk head bolts are also called flat cup hexagonal bolts, commonly available in imperial and metric systems, the outer edge of the screw is round, the middle is concave hexagon, its head is a 90-degree cone, after assembly, the screw head can be plunged into the assembly surface, so that the assembly surface remains neat. Nanning Aozhan hardware fasteners specifications are complete, a wide range, support customization, contact us quickly to consult!

    Dimension drawing of carbon steel hexagon socket countersunk head bolt

    Advantages of Hexagonal Countersunk Head Bolts

    1. High strength, good shock resistance

    2. Easy to fasten, disassemble, not easy to slip the corner

    3. High stability and beautiful appearance

    4. Complete specifications, spot supply

    5. Factory direct sales, so that your purchasing costs directly down 20%.

    Quality Inspection


    Why choose us?

    1. Source factory: more than 10 years fastener manufacturing enterprise, integrity management

    2. Quality assurance: strict quality control, provide product certificate

    3. Perfect after-sales service: We have a perfect after-sales service system to solve problems in time

    4. Fast logistics: long-term cooperation with a number of logistics, low logistics costs

    Production Process

    Production- process

    Application of Hexagonal Countersunk Head Bolts

    Carbon steel hexagonal countersunk head bolts are often used in machinery and equipment, mainly to facilitate fastening, disassembly, and not easy to slip the corner and other advantages. They are also used in places where the surface of the parts should not be concave after assembly.

    Application Diagram

    Application Diagram

    Our Certification

    Our Certification


    1. What do we support?

    a. Sales term

    We have a professional sales team, all of them come from higher education institutions and have professional fastener knowledge and sales knowledge. The sales staff can provide you with the most reasonable price in the fastest time and can help you solve all fastener problems.

    b.Product quality

    Aozhan Hardware factory has been engaged in bolt manufacturing and processing for more than 10 years, the process and technology are constantly improving, the products are finely made and burr-free. All dimensions and chamfering are done according to the drawings, and product inspection reports can be provided.

    c.Delivery time

    Our warehouse ensures that fasteners are in stock up to 88%, such as bolts, nuts, screws and washers, and the products can be delivered quickly, so many customers trust us and have a high rate of repeated orders. We have a stable relationship with shipping agents, who help us choose the shortest shipping time to ensure that the products can reach our customers quickly.

    2. What is the quality of your bolt products? How do you guarantee the high quality of your bolt products?

    Nanning Aozhan Hardware has been engaged in bolt manufacturing and processing for more than 10 years, and the process and technology are constantly improving.

    Our bolts have been sold to many countries in the world and have been recognized and praised by our customers for their stable quality.

    Choose Nanning Aozhan hardware bolts, choose professional, choose good service.

    3. What are your main products?

    Our bolt factory mainly produces the following products.

    * Bolts

    * Screws

    * Self-tapping nails

    * Drill-tail nails

    * Nuts

    * Washers

    * Pins

    * Rigging

    * Wire rope

    * Studs

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