Self-Tapping Inserts are special threaded inserts designed to self-tap and create threads during installation. Compared with the ordinary screw sleeve, the self-tapping screw sleeve has unique advantages, which makes it more convenient in a variety of application scenarios.
peculiarity
1. Self-tapping function: the self-tapping sleeve does not need to be tapped in advance during installation, and its front end is designed with a tapping edge similar to a screwdriver, which can cut out the thread by itself during installation.
2. Save time: Since no additional tapping steps are required, the installation process of the self-tapping sleeve is faster.
3. Wide range of application: suitable for a variety of materials, including but not limited to metal, plastic, wood, etc., especially suitable for harder materials.
structure
• Front end design: The front end usually has a tapered tapping section capable of cutting material and forming threads.
• Thread: there are internal and external threads, the internal thread is used to fit the screw, and the external thread is fixed in the substrate.
• Locking mechanism: Some self-tapping sleeves are also designed with special locking structures, such as expansion ends or locking rings, to ensure the stability of the sleeve in the substrate.
| Metric steel wire screw sleeve specification parameter table |
| Thread specification d×p |
k×d |
Wire screw sleeve installed length L(mm) |
Bit diameter d(mm) |
Free external diameter Dz(mm) |
Number of free spiral rings N(≈) |
| M2×0.4 |
1d |
2 |
2 |
2.6-2.8 |
2.9 |
| 1.5d |
3 |
4.7 |
| 2d |
4 |
6.5 |
| M2.5×0.45 |
1d |
2.5 |
2.6 |
3.3-3.5 |
3.5 |
| 1.5d |
3.75 |
5.9 |
| 2d |
5 |
8.1 |
| M3×0.5 |
1d |
3 |
3.1 |
3.8-4.0 |
4 |
| 1.5d |
4.5 |
6.3 |
| 2d |
6 |
8.7 |
| M4×0.7 |
1d |
4 |
4.1 |
5.15-5.35 |
3.7 |
| 1.5d |
6 |
6 |
| 2d |
8 |
8.4 |
| M5×0.8 |
1d |
5 |
5.2 |
6.35-6.6 |
4.3 |
| 1.5d |
7.5 |
6.9 |
| 2d |
10 |
9.7 |
| M6×1 |
1d |
6 |
6.2 |
7.6-7.85 |
4.2 |
| 1.5d |
9 |
7 |
| 2d |
12 |
9.6 |
| M7×1 |
1d |
7 |
7.2 |
8.65-8.9 |
5.4 |
| 1.5d |
10.5 |
8.5 |
| 2d |
14 |
11.6 |
| M8×1 |
1d |
8 |
8.2 |
9.85-10.1 |
6.1 |
| 1.5d |
12 |
9.5 |
| 2d |
16 |
13 |
| M8×1.25 |
1d |
8 |
8.3 |
9.85-10.1 |
4.7 |
| 1.5d |
12 |
7.4 |
| 2d |
16 |
10.6 |
| M10×1 |
1d |
10 |
10.2 |
12.1-12.5 |
7.6 |
| 1.5d |
15 |
12 |
| 2d |
20 |
16.3 |
| M10×1.5 |
1d |
10 |
10.3 |
12.1-12.5 |
5 |
| 1.5d |
15 |
8 |
| 2d |
20 |
11.2 |
| M12×1.5 |
1d |
12 |
12.4 |
14.4-14.8 |
6.2 |
| 1.5d |
18 |
9.8 |
| 2d |
24 |
13.5 |
| M12×1.75 |
1d |
12 |
12.4 |
14.4-14.8 |
5.2 |
| 1.5d |
18 |
8.4 |
| 2d |
24 |
11.7 |
| M14×1.5 |
1d |
14 |
14.4 |
17.2-17.7 |
7 |
| 1.5d |
21 |
11.2 |
| 2d |
28 |
15.3 |
| M16×1.5 |
1d |
16 |
16.4 |
19.4-19.9 |
8.3 |
| 1.5d |
24 |
13 |
| 2d |
32 |
17.7 |
| M16×2 |
1d |
16 |
16.5 |
19.4-19.9 |
6 |
| 1.5d |
24 |
9.7 |
| 2d |
32 |
13.3 |
| M18×1.5 |
0.5d |
9 |
18.4 |
21.5-22 |
4.4 |
| 1.0d |
18 |
9.5 |
| 1.5d |
27 |
15 |
| M20×1.5 |
0.75d |
15 |
20.4 |
23.7-24.2 |
8 |
| 1d |
20 |
10.7 |
| 1.5d |
30 |
16.7 |
| M20×2.5 |
1d |
20 |
20.5 |
23.7-24.2 |
6.3 |
| 1.5d |
30 |
10 |
| 2d |
40 |
13.7 |
| M22×1.5 |
0.75d |
16.5 |
22.4 |
26.3-26.8 |
8.6 |
| 1d |
22 |
11.7 |
| 1.5d |
33 |
18 |
| M24×1.5 |
0.75d |
18 |
24.4 |
28.6-29.1 |
9.5 |
| 1d |
24 |
13 |
| 1.5d |
36 |
19.8 |
| M24×3 |
1d |
24 |
24.6 |
28.6-29.1 |
6.3 |
| 1.5d |
36 |
10 |
| 2d |
48 |
14 |
| M26×1.5 |
0.5d |
13 |
26.4 |
30.5-31 |
6.7 |
| 0.75d |
19.5 |
10.7 |
| 1d |
26 |
14.6 |
| M27×1.5 |
0.5d |
13.5 |
27.4 |
32.2-32.7 |
6.7 |
| 0.75d |
20.3 |
10.7 |
| 1d |
27 |
14.6 |
| M27×2 |
0.5d |
13.5 |
27.5 |
32.2-32.7 |
6.7 |
| 0.75d |
20.3 |
10.7 |
| 1d |
27 |
14.6 |
| M30×1..5 |
0.5d |
15 |
30.4 |
35.2-35.7 |
7.8 |
| 0.75d |
22.5 |
12.2 |
| 1d |
30 |
16.5 |
| M30×3.5 |
1d |
30 |
30.7 |
35.2-35.7 |
7 |
| 1.5d |
45 |
11 |
| 2d |
60 |
14.9 |
| M33×1.5 |
0.5d |
16.6 |
33.4 |
38.3-38.8 |
9.1 |
| 0.75d |
24.5 |
13.7 |
| 1d |
33 |
18.3 |
| M39×2 |
0.5d |
19.5 |
39.5 |
45.1-45.6 |
7.9 |
| 0.75d |
29.25 |
12.2 |
| 1d |
39 |
16.6 |
| M60×4 |
0.5d |
32 |
64.9 |
65-66 |
7.3 |
| 1d |
64 |
15.6 |
Characteristics and advantages
It can be used in almost any material, including aluminum, cast iron, steel and plastics Positive rotation prevention of mechanical lock High strength and flexibility provide maximum pull-out strength It is easy to install and disassemble and can be installed with standard electric drill and tap.
1. who are we?
We are based in Henan, China, start from 2014,sell to Eastern Europe(10.00%),South America(10.00%),North
America(10.00%),Africa(5.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Wire thread insert,Self tapping insert,Tanglees,Keensert,Thread repair kit
4. why should you buy from us not from other suppliers?
Our company is a professional manufacturer of thread inserts and tools. Xinxiang, a powerful industrial city in Central China,has been engaged in thread nesting industry for more than 20 years.
5. what services can we provide?
Accepted Delivery Terms: FOB,EXW,Express Delivery;
Accepted Payment Currency:USD;
Accepted Payment Type: T/T,L/C,MoneyGram,Western Union;
Language Spoken:English,Chinese
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