Self tapping thread insert
307 type 308 type Three-hole Self-tapping Threaded Insert
Introduction
● The inside and outside of the self-tapping thread insert has tooth grain, embedded in plastic, aluminum alloy, cast iron, copper and other soft materials, can form a higher strength of the internal thread hole, self-tapping thread insert can also repair the damaged internal thread.
● Self-tapping thread insert has self-tapping capability, so the base material need not be tapped in advance to save cost.
● Large contact surface with finished products, strong tensile strength, lower strength materials can be used in product design.
● For the female thread that has worn out or broken teeth, use the self-tapping thread insert to continue to use the same screw.
● Strong resistance to vibration, can prevent looseness.
● There is no clearance with the base material, and the base material has good air tightness if it contains bubbles.
● Self-tapping thread insert installation is simple and rapid, only one assembly tool, low cost, almost no defect rate.
● The tapping thread insert is generally made of carbon steel and stainless steel. Carbon steel can be plated with colored zinc, yellow zinc, blue and white zinc.
● Self-tapping thread insert has self-tapping capability, so the base material need not be tapped in advance to save cost.
● Large contact surface with finished products, strong tensile strength, lower strength materials can be used in product design.
● For the female thread that has worn out or broken teeth, use the self-tapping thread insert to continue to use the same screw.
● Strong resistance to vibration, can prevent looseness.
● There is no clearance with the base material, and the base material has good air tightness if it contains bubbles.
● Self-tapping thread insert installation is simple and rapid, only one assembly tool, low cost, almost no defect rate.
● The tapping thread insert is generally made of carbon steel and stainless steel. Carbon steel can be plated with colored zinc, yellow zinc, blue and white zinc.
Parameter
|
307/308 Type |
307 Type |
308 Type |
External Thread |
Reference Hole Dia(mm) |
Min Hole Depth(mm) |
|||
|
Metric Size |
Inch Size |
Length |
Length |
Aluminium |
Cast Iron |
307 Type |
308 Type |
|
|
M3-0.5 |
U#4-40 |
4 |
6 |
M5-0.5 |
4.6-4.7 |
4.7-4.8 |
6 |
8 |
|
M4-0.7 |
U#8-32 |
6 |
8 |
M6.5-0.8 |
6.0-6.1 |
6.1-6.2 |
8 |
10 |
|
M5-0.8 |
U#10-24 |
7 |
10 |
M8-1.0 |
7.4-7.5 |
7.6-7.7 |
9 |
13 |
|
M6-1.0 |
U1/4-20 |
8 |
12 |
M10-1.25 |
9.3-9.4 |
9.5-9.6 |
10 |
15 |
|
M8-1.25 |
U5/6-18 |
9 |
14 |
M12-1.5 |
11.1-11.3 |
11.3-11.5 |
11 |
17 |
|
M10-1.5 |
U3/8-16 |
10 |
18 |
M14-1.5 |
13.1-13.3 |
13.3-13.5 |
13 |
22 |
|
M12-1.75 |
U7/6-14 |
12 |
22 |
M16-1.75 |
15.0-16.2 |
15.3-15.5 |
15 |
26 |
|
M14-2.0 |
U1/2-13 |
14 |
24 |
M18-2.0 |
17.0-17.2 |
17.3-17.5 |
17 |
28 |
|
M16-2.0 |
U5/8-11 |
14 |
24 |
M20-2.0 |
19.0-19.2 |
19.3-19.5 |
17 |
28 |
For difficult to cut materials, it has larger wall thickness, shallower but sharper external thread. The thread insert uses three round holes as cutting edge. The difference between 307 and 308 is the length of the insert.
Feature
● Lightweight yet robust design gives superior holding power
● Quick and simple installation process
● Extensive stock of METRIC, UNC, UNF inserts
● Large variety of materials and coating options
● Special lengths and diameter pitch combinations available to order
● A wide range of tooling options available
● Quick and simple installation process
● Extensive stock of METRIC, UNC, UNF inserts
● Large variety of materials and coating options
● Special lengths and diameter pitch combinations available to order
● A wide range of tooling options available
Material
The materials used in domestic self-tapping thread insert are generally carbon steel and stainless steel.
1. Carbon steel: Color-plated zinc, suitable for surface carburizing heat treatment on aluminum alloy, copper alloy, plastic and other substrates with low engineering strength.
2. Stainless steel SUS303 (304, 316, 316L): suitable for surface passivation treatment on cast iron and other products with higher strength.
1. Carbon steel: Color-plated zinc, suitable for surface carburizing heat treatment on aluminum alloy, copper alloy, plastic and other substrates with low engineering strength.
2. Stainless steel SUS303 (304, 316, 316L): suitable for surface passivation treatment on cast iron and other products with higher strength.
Purpose
It is widely used in aerospace components, locomotive, high-voltage electrical appliances, automotive power, wind power, nuclear power, communication and electrical industries. It is used in aluminum, magnesium, copper alloy, plastic, plexiglass, plywood, steel, cast steel and cast iron to make it more tough and firm
About us
Xinxiang Flight Fastener Co., Ltd. is a professional manufacturer engaged in the design and manufacture of Thread Inserts, Self-Tapping thread inserts and other threaded fasteners. National high-tech enterprises. The company has independent technology development strength, advanced design level, automatic production equipment and high precision detection equipment. Professional to provide customers with Thread Inserts, Self-Tapping thread inserts and other threaded fastener product design and use of the whole process of technical support.
