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Slotted Self tapping thread insert for mental

Self tapping thread insert

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Slotted Self tapping thread insert for mental

Self-tapping Thread Inserts is a kind of fastener with internal and external thread and cutting hole or groove. There are two kinds of materials: carbon steel and stainless steel. The surface of carbon steel is galvanized (yellow zinc, color zinc and blue zinc), and stainless steel is the natural color of metal.

    Slotted Self tapping thread insert for mental

    The 302 series is the most widely used of all self-tapping thread inserts, with two slots that not only cut, but also provide a slight inward locking force.

    The 303 series is a thinner walled version of the 302 series and is mainly used in plastics or light alloys where thick walls are not possible, and where lubrication may be considered for installation in special cases.

    Feature

    ◆Provides strong female threads on soft substrates to accommodate multiple repairs and disassembly needs;
    ◆Can effectively repair damaged internal threads;
    ◆Self-tapping sleeves are used after die casting, injection molding, or other manufacturing processes, so they allow for simplified product mix and improved yields;
    ◆Self-tapping bushings can withstand high loads, so smaller inserts can be used, resulting in a more compact product design.

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    specification

    Self tapping thread insert parameter

    Product name

    302/303 series Self tapping thread insert

    Material

    Steel Zn/SUS303/Customized

    Surface color

    Galvanized/Natural color

    Galvanizing: yellow/blue/Colored

    Thread type

    Metric,Inc  UNC, UNF

    Model Number

    M2-M24/Customized

    Function

    Assembly, threaded connection/fastening/conversion

    Reliability test

    Mechanical dimentions, hardness test. salt spray endurance test

    Table of dimensions for self-tapping threaded inserts

     Metric size Type 302 Self-Tapping Thread Insert

    Internal

    thread

    External thread

    Length

    Guideline values

    for receiving

    hole diameter

    Minimum

    borehole depth

    for blind holes

    A

    E

    P

    B

    L

    T

    M2

    4.5

    0.5

    6

     4.2 to 4.3

    8

    M2.5

    4.5

    0.5

    6

     4.2 to 4.3

    8

    M3

    5

    0.5

    6

     4.7 to 4.8

    8

    M3.5

    6

    0.75

    8

     5.6 to 5.7

    10

    M4

    6.5

    0.75

    8

     6.1 to 6.2

    10

    M5

    8

    1

    10

     7.5 to 7.6

    13

    M6(a)

    9

    1

    12

     8.5 to 8.6

    15

    M6

    10

    1.5

    14

     9.2 to 9.4

    17

    M8

    12

    1.5

    15

    11.2 to11.4

    18

    M10

    14

    1.5

    18

    13.2 to13.4

    22

    M12

    16

    1.5

    22

    15.2 to15.4

    26

    M14

    18

    1.5

    24

    17.2 to17.4

    28

    M16

    20

    1.5

    22

    19.2 to19.4

    26

    M18

    22

    1.5

    24

    21.2 to21.4

    29

    M20

    26

    1.5

    27

    25.2 to25.4

    32

    M22

    26

    1.5

    30

    25.2 to25.4

    36

    M24

    30

    1.5

    30

    29.2 to29.4

    36

    M27

    34

    1.5

    30

    33.2 to33.4

    36

    M30

    36

    1.5

    40

    35.2 to35.4

    46

    Metric size Type 303 Self-Tapping Thread Insert

    Internal

    thread

    External thread

    Length

    Guideline values

    for receiving

    hole diameter

    Minimum

    borehole depth

    for blind holes

    A

    E

    P

    B

    L

    T

    M3

    4.5

    0.5

    6

    4.2-4.3

    8

    M3.5

    5

    0.6

    6

    4.7-4.8

    8

    M4

    6

    0.7

    6

    5.6-5.7

    8

    M5

    7

    0.8

    8

    6.6-6.7

    10

    M6

    8

    1.0

    10

    7.5-7.6

    13

    M8

    10

    1.25

    12

    9.2-9.4

    15

    M10

    12

    1.5

    15

    11.2-11.4

    18

    Inch size Type 302 Self-Tapping Thread Insert

    Internal thread

    External thread

    Length

    Minimum

    borehole depth

    UNC

    UNF

    E

    P

    B

    T

    4-40

    4-48

    5

    0.5

    6

    8

    6-32

    6-40

    6

    0.75

    8

    10

    8-32

    8-36

    6.5

    0.75

    8

    10

    10-24

    10-32

    8

    1

    10

    13

    1/4-20

    1/4-28

    10

    1.5

    14

    17

    5/16-18

    5/16-24

    12

    1.5

    15

    18

    3/8-16

    3/8-24

    14

    1.5

    18

    22

    7/16-14

    7/16-20

    16

    1.5

    22

    26

    1/2-13

    1/2-20

    18

    1.5

    22

    28

    5/8-11

    5/8-18

    20

    1.5

    22

    27

    Product Installation Steps

    Manual Installation:
    Use the special thread insert installation tool. Refer to the figure below for the specific operation method. The end of the tool in the figure is a quadrangle head which can be connected with a manual tapping wrench.Slotted Self tapping thread insert for mental1sh0

    Electric Installation:
    The Dill type of HRT numerical control suspension thread insert electric installation machine designed by AVIC can complete the installation of thread insert with high efficiency and high quality.

    Slotted Self tapping thread insert for mental2v0w

    Attention during installation
    1. For different processing materials, refer to the drilling size specification for pre-drilling processing. When the hardness of the corresponding material is high, please slightly increase the bottom hole within the drilling range.
    2. With the slotted end of the socket down, install the self-tapping thread insert completely into the front of the tool, and it should be in vertical contact with the work piece. When installing (1 to 2 pitches), please make sure that the bottom hole is aligned and never tilt. If tilting is detected, do not reverse the tool and readjust before using. After 1/3 to 1/2 of the way in, do not start again. In addition, please do not reverse the rotation of the tool, otherwise it will cause product failure.
    3. The self-tapping thread insert should be at least 1mm below the surface of the part after assembly.

    Application of Self tapping threaded inserts

    One of the most significant advantages of the self-tapping thread insert is its ability to repair damaged threads or loose connections. It easily corrects damage to existing threads and provides a new, secure base for a stronger connection. This solution not only saves time, but also improves the overall reliability of the workpiece.

    Self-tapping thread insert are used in a wide range of applications across multiple industries. They are used in automotive, aerospace, machining and electronics. They are used to repair damaged threaded holes, enhance the robustness of connections, and maintain stable connections under high pressure, high vibration, and extreme temperature conditions.

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    Generally there is no need to install the self-tapping thread insert for products that do not require it, but some important connection parts need to be installed due to high tension requirements or special design. Self-tapping screws are strictly according to the ISO/TS16949 quality system to produce and test products, self-tapping thread insert are used throughout almost the entire metal and plastics processing industry, the products have been used for a long time in the automotive industry, civil and commercial vehicle engines, transmissions, aerospace industry, railcar industry and so on, and its quality has never been questioned.

    Part of the application industry display

    304-Stainless-Steel-Thread-Repair-wire-thread-inse4gng

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