UNC/UNF Cutting Slot Self-tapping Insert are cylindrical metal bushings featuring internal and external threads. They are specifically engineered to create their own threads while being inserted into a pre-drilled hole. Self-Tapping Inserts with cutting slot offer durable, wear-resistant threading solutions for a broad spectrum of materials, ranging from robust high-strength steels to brittle plastics. By enabling the creation of their threads, Self-Tapping Inserts eliminate the need for pre-tapped holes.
|
Drawing No . |
A Internal thread |
E External thread |
P Pitch |
L Length |
D Minimum borehole depth for blind holes |
| Whitworth B.S.84 Internal Thread Tolerance: medium |
L 302020 |
1/4 |
10 |
1.5 |
14 |
17 |
| L 302021 |
5/16 |
12 |
1.5 |
15 |
18 |
| L 302022 |
3/8 |
14 |
1.5 |
18 |
22 |
| L 302023 |
7/16 |
16 |
1.5 |
22 |
26 |
| L 302024 |
1/2 |
18 |
1.5 |
22 |
26 |
| L 302025 |
5/8 |
20 |
1.5 |
22 |
27 |
| UNC Unified Coarse Thread ANSI B1.1/BS 1580 Internal Thread Tolerance:2B |
L 302026 |
4-40 |
5 |
0.5 |
6 |
8 |
| L 302027 |
6-32 |
6 |
0.75 |
8 |
10 |
| L 302028 |
8-32 |
6.5 |
0.75 |
8 |
10 |
| L 302029 |
10-24 |
8 |
1 |
10 |
13 |
| L 302030 |
1/4-20 |
10 |
1.5 |
14 |
17 |
| L 302031 |
5/16-18 |
12 |
1.5 |
15 |
18 |
| L 302032 |
3/8-16 |
14 |
1.5 |
18 |
22 |
| L 302033 |
7/16-14 |
16 |
1.5 |
22 |
26 |
| L 302034 |
1/2-13 |
18 |
1.5 |
22 |
28 |
| L 302035 |
5/8-11 |
20 |
1.5 |
22 |
27 |
| UNF Unified Fine Thread ANSI B1.1/BS 1580 Internal Thread Tolerance:2B |
L 302036 |
4-48 |
5 |
0.5 |
6 |
8 |
| L 302037 |
6-40 |
6 |
0.75 |
8 |
10 |
| L 302038 |
8-36 |
6.5 |
0.75 |
8 |
10 |
| L 302039 |
10-32 |
8 |
1 |
10 |
13 |
| L 302040 |
1/4-28 |
10 |
1.5 |
14 |
17 |
| L 302041 |
5/16-24 |
12 |
1.5 |
15 |
18 |
| L 302042 |
3/8-24 |
14 |
1.5 |
18 |
22 |
| L 302043 |
7/16-20 |
16 |
1.5 |
22 |
26 |
| L 302044 |
1/2-20 |
18 |
1.5 |
22 |
28 |
| L 302045 |
5/8-18 |
20 |
1.5 |
22 |
27 |
| Dimensions in mm, Other sizes, special designs and materials on request. |
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