Self-tapping inserts (also known as self threaded inserts) are cylindrical metal bushings with internal and external threads and are specially
designed to cut their own threads as they are being driven into a drilled hole
Self-tapping inserts provide permanent wear-resistant threads in a wide range of materials, from tough to tap, high strength steels to brittle plastic
By tapping its own thread, self-tapping insert eliminates the need for pre-tapped holes
Features
1. Self tapping
2. No pre-tapping required
3. Very high pull-out resistance
4. Highly resistance to vibration, can withstand vibration without loosening
5. Produces high quality, permanent, wear-resistant threads
6. Unlimited thread reusing ability
7. Protects expensive components from damage
8. Easy to install, standard taps can be used
9. Wide variety of styles to fit almost every application
Materials: zinc-plated/yellow chromated/stainless steel/brass
Standards: Metric/UNC/UNF
| 307 self-tapping with cutting bores | Length (mm) | External thread | Aluminum alloy | Cast iron products | Cast iron products |
| M3-0.5 | 4 | M5-0.6 | 4.6-4.7 | 4.6-4.7 | 8 |
| M5-0.8 | 7 | M8-1.0 | 7.4-7.5 | 7.6-7.7 | 13 |
| M8-1.25 | 9 | M12-1.5 | 11.1-11.3 | 11.3-11.5 | 18 |
| M12-1.75 | 12 | M16-1.75 | 15.0-15.3 | 15.3-15.5 | 26 |
| M16-2.0 | 14 | M20-2.0 | 19.0-19.2 | 19.3-19.5 | 27 |
