Type L302 Self-tapping Threaded Inserts

L302 series products are the most widely used, belonging to the groove cutting category, with a little thread self-locking characteristics.

Thread specification: 1/4-5/8-18 (Inch)
Common materials: stainless steel, carbon steel, brass, etc
Other specifications can be customized according to customer's requirements.

Installation Method

Installation method of self-tapping screw sleeve 1: When the number of installations is small, a simple installation method can be adopted, specifically, the method of bolts + nuts of corresponding specifications is adopted, the self-tapping screw sleeve is fixed on the bolts of corresponding models, and the nuts of the same models are fixed to make the three become a whole, then the screw sleeve is screwed into the bottom hole with a wrench, and then the bolts are withdrawn.

Simple Installation Method of Self-tapping Screw Sleeve

Installation Method 2 of Self-tapping Screw Sleeve: When the number of installations is large, Special self-tapping screw sleeve installation tools can be used. First, the self-tapping screw sleeve is installed on the special tool, and the tool with the screw sleeve installed is screwed into the prefabricated hole for about one turn. After ensuring that the tool is perpendicular to the end face of the prefabricated hole, the screw sleeve is screwed in with force. When the end face of the self-tapping screw sleeve is about 0.2 mm lower than the end face of the prefabricated hole, stop screwing in and screw out the special tool in reverse. The tail end of the self-tapping screw sleeve installation tool is a hexagonal head, which can be connected with manual tapping wrench or electric or pneumatic tools.

Installation considerations

1. According to different processing materials, pre-drilling is carried out with reference to drilling size specifications. When the hardness of the corresponding material is relatively high, please slightly increase the bottom hole within the drilling range.

2. The slotted end of the screw sleeve is downward. The self-tapping screw sleeve is completely installed into the front end of the tool and must be vertically contacted with the workpiece. When loading (1 ~ 2 pitch), please make sure to align with the bottom hole and never tilt. When tilt is found, please do not reverse the tool and readjust it for reuse. After entering 1/3 ~ 1/2, you cannot start again. In addition, please do not rotate the tool in the opposite direction, otherwise it will cause product failure.

3. After assembly, the self-tapping screw sleeve shall be at least 1mm lower than the surface of the part.

Use

Self-tapping screw sleeve is a self-tapping thread insert with slots or openings, of which slotted self-tapping screw sleeve is recommended for application in most application fields. On some materials, this screw sleeve provides perfect specific thread locking effect. If not, it is generally recommended to use Type 307/308, which has made a major breakthrough in material cutting difficulties. This product not only has a very thick wall, but also has three round holes with cutting ability scattered on the wall. 307/308 product is especially suitable for the condition that the material thickness is not too wide.

Generally, there is no need to install self-tapping screw sleeves for products that are not required, but some important connection parts need to be installed due to high tension requirements or special design. Self-tapping screw sleeve is a product produced and tested strictly according to ISO/TS16949 quality system. The application of self-tapping screw sleeve almost runs through the entire metal and plastic processing industry. The product has been applied to automobile industry, civil and commercial vehicle engines, transmissions, aviation industry, rail car industry, etc. for a long time, and its quality has never been questioned.

Precision Parts Manufacturer & amp; Fastening scheme providers are welcome to inquire
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