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 |
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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