Self tapping screw sleeve, also known as self tapping tooth sleeve, is a new type of fastener that enhances thread strength. The self tapping screw sleeve has tooth patterns inside and outside, embedded in softer materials such as plastic, aluminum alloy cast iron, copper, etc
| 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. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
2.what can you buy from us?
Wire Thread Insert/Nut/Screw/Bolt/Washer
3. why should you buy from us not from other suppliers?
The company is a professional manufacturer and supplier of standard fasteners for industrial parts and components, serving domestic and foreign e-commerce business and offline supply chain business for 10 years
4. what services can we provide?
Accepted Delivery Terms: FOB,CIF,EXW,DDP,DAF;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,Western Union;
Language Spoken:English,Chinese,Russian
){kind=link}