Inserts Design Guidelines

PublishTime：2022-11-04

●Holes for post-mold installed Inserts should always be deeper than the length of the Insert. For Self-Tapping Inserts, a minimum depth of 1.2 times the Insert length is recommended. For other Inserts, the recommended minimum depth is the Insert length plus two (2) Insert thread pitches. The assembly screw should never bottom out in the hole, as jack-out would result.l
●Counterbores are not recommended for any Insert types except Self-Tapping and Headed Inserts. Counterbores are recommended for Self-Tapping Inserts to reduce the risk of flaking. The outside diameter of the counterbore should be equal to or larger than the outside diameter of the Self-Tapping Insert. Reference page 11 for the recommended mean counterbore depth "F" that corresponds to each Insert size.
●Counterbores are also recommended for Headed Inserts so that the top of the Insert will be flush with the surface of the plastic after installation. The diameter of the counterbore should be 0.5mm (.02”) to 1.3mm (.05”) larger than the head diameter of the Insert. The minimum depth of the counterbore should be specified as the thickness of the head. Insert heads are sometimes left above flush to reduce jack-out or improve match-up with the mating component.
●The top of the installed Insert should be flush with the surface of the plastic part with maximum protrusion from the host of 0.13mm (.005”). Additional installation depth tolerance may be assigned so the Insert is slightly below flush. Care should be taken to install the top bearing surface of the Insert as close to flush as possible since a subflush installation presents a jack-out condition.

Brand of Product：	Spirol
Part#：	INS 29/8-32/.321L EK 、 INS Series More Part#
Product Category：	Compression Limiter More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	04/20
Version Number：
Data Encoding：
Data Size：	807 KB

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