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DIN6921 Half Thread UNF UNC Hex Flange Bolts - Hebei Dewei Metal Products Co., Ltd
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    DIN6921 Half Thread UNF UNC Hex Flange Bolts

    products

    Home - Products - DIN6921 Half Thread UNF UNC Hex Flange Bolts

    Products

    • Bolt 
      • Allen Bolt
      • Anchor Bolt
      • Auto Bolt
      • Carriage bolt
      • Stainless steel bolt
      • High strength bolts
      • Shear bolt
      • Eye Bolt
      • Expansion Bolt
      • Flange Bolt
      • Foundation Bolt
      • Hex Bolt
      • Hollow Bolt
      • Hexagon Socket Bolt
      • Hexagon Flange Bolt
      • Round-head Bolt
      • Stud Bolt
      • Square-head Bolt
      • Steel structure bolts
      • T-Bolt
      • U-Bolt
      • Welding Bolt
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      • Cross recessed pan head self drilling screw
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    • Metal Stamping Parts Series
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    The global market for customized special-shaped parts welcomes technological innovation, and China’s smart manufacturing opens a new track for going overseas-dewell fastener factory provides bolt and nut.washer.Metal Stamping products.Caster wheels.lifting device.jack device

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    A New Benchmark for Special-shaped Parts Manufacturing -dewell fastener factory provides bolt and nut.washer.Metal Stamping products.Caster wheels.lifting device.jack device

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    • Stainless steel bolt

      Stainless steel bolt

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    
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
    DIN6921 Half Thread UNF UNC Hex Flange Bolts
  • DIN6921 Half Thread UNF UNC Hex Flange Bolts

    Product Hexagon flange bolt
    Size M5-M20
    Grade  4.8; 8.8; 10.9; 12.9; etc.

    ASME&AISI: 2; 5; 8

    Material stainless steel, carbon steel
    Surface treatment Zinc plated, hot dip galvanized, black, Dacromet, etc.
    Standard DIN GB ISO JIS BA ASME ANSI ASTM
    Thread unc, unf, metric thread
    Usage building industry machinery
    Certification ISO9001, SGS, CTI, ROHS

    submit application
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    Description

    Sign

    A flange bolt is a type of fastener consisting of a hexagonal head, a flange plate (with a gasket fixed to the hexagon below), and a screw (a cylindrical body with external threads). It needs to be used in conjunction with a nut to securely connect two parts with through holes. This type of connection is called a bolt connection, and by unscrewing the nut from the bolt, the two parts can be separated, making the bolt connection a detachable connection. Flange bolts are widely used in highway and railway bridges, as well as in heavy machinery such as industrial and civil buildings, cranes, and excavators, with a wide range of applications.

    The classification of flange bolts includes:

    Hexagonal flange types: There are two types of hexagonal heads, one is flat headed and the other is concave headed.

    Surface color categories: Depending on different needs, the surface can be plated with white, military green, colored yellow, and rust free Dacromet.

    Flange category: Depending on the location where the flange bolts are used, the size requirements for the disc vary. There are also flat bottomed and toothed types, with toothed ones providing anti slip function.

    According to the force distribution method of the connection, it can be divided into ordinary and those with hinged holes. The flange bolts used for hinged holes should match the size of the hole and be used when subjected to lateral forces.

    In addition, in order to meet the needs of locking after installation, some flange bolt shafts have holes that can prevent the bolts from loosening when subjected to vibration. Some flange bolts without threads need to be made thin, called thin rod flange bolts, which are beneficial for connecting under variable forces. There are specialized high-strength bolts on the steel structure, with larger heads and varying sizes.

    The material classification of flange bolts includes high carbon steel, medium carbon steel, low carbon steel, and alloy steel, and suitable materials are selected according to different application scenarios and performance requirements. The fastening method and requirements for flange screws include the use of torque free ring wrenches or impact wrenches, selected according to the screw size and flange pressure rating to ensure the safety and reliability of the fastening

    The use of flange bolts is very extensive, mainly used to fasten and connect two parts with through holes. This type of bolt consists of three parts: a hexagonal head, a flange, and a screw. It usually needs to be used in conjunction with a nut and is a detachable connection. Flange bolts have applications in various fields, including but not limited to the following aspects:

    1.Industrial and civil buildings: In the field of construction, flange bolts are used to fix various building components such as beams, slabs, columns, etc., ensuring the stability and safety of the building structure.

    2.Heavy Machinery: In the field of heavy machinery, such as cranes, excavators, etc., flange bolts are used to connect various components to ensure stable operation of the equipment.

    3.Transportation: In the field of transportation, such as railways, bridges, vehicles, etc., flange bolts are used to fix and connect various components, ensuring the safety and reliability of transportation vehicles.

    4.Aviation industry: In the aviation industry, flange bolts are used to connect aircraft structural components, withstand extreme temperature changes, vibrations, and aerodynamic loads caused by high-speed flight, and ensure flight safety.

    5.Shipbuilding: In shipbuilding, flange bolts are used to connect ship structures, deck equipment, etc., meeting the requirements for corrosion resistance in marine environments.

    6.Petrochemical industry: In the petrochemical industry, flange bolts are used to connect pipelines and their accessories, withstand high pressure and have excellent corrosion resistance, ensuring the safe and efficient operation of transportation systems.

    In addition, there are various classifications for flange bolts, including hexagonal head types (flat head and concave head), surface color categories (such as white plating, military green, etc.), flange plate categories (flat bottom and toothed), and classifications based on the force distribution of the connection. These classifications enable flange bolts to adapt to different usage requirements and environmental conditions.

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    FAQ

    How long is your delivery time? Expand

    Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

    Do you provide samples ? is it free or extra ? Expand

    Yes, we could offer the sample for free charge but do not pay the cost of freight.

    Is it possible to add client's logo on the products ? Expand

    Yes,OEM service is acceptable.

    What is your terms of payment ? Expand

    Payment<=1000USD,100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

    Can you supply the relevant documentation? Expand

    Yes, we can provide most documentation including Certificates of Analysis /Conformance; Insurance; Origin, and other export documents where required.

    What is the average lead time? Expand

    For samples, the lead time is about 7 days. For mass production, the lead time is 20-30 days after receiving the deposit payment. The lead times become effective when (1) we have

    received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sale. In all

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