Yardley Installation Methods

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Self-Tapping Insert Installation Methods 
Yardley self-tapping inserts are ideally suited for high volume assembly operations because of their easy, quick installation. Inserting a self-tapping insert is as simple as driving a self-tapping screw or tapping a thread. A drilled hole of correct size must be provided, driver tool is applied to insert, driver and insert are positioned over the hole, insert is driven (turned) home and the driver is backed off, leaving the insert installed. The insert cuts its own threads as it is driven into the base material. The methods listed below can be used to install Yardley TRI-SERT and FIBERSERT inserts.

Installation Using Self-Tapping Insert Drivers
Because it is driven by its internal threads, a different driver is required for each insert size. Thread cutting can be accomplished by either end because there is a lead on both ends of the insert. Alignment is important and the insert driver should be used with a hand tapper or a tapping head attachment on a drill press without a lead screw. For applications in recessed areas or close to walls or ribs, a Yardley Extension Driver may be used to facilitate installation. Inserts should be installed flush or below material surface. Thus, when one assembles a bracket and screw to the insert, the load is not transmitted directly through the insert but to the surface of the boss or the material in which the insert is installed. This is especially important where vibration is encountered.


Use the driver prefix followed by the insert thread size:

HR - for standard production driver 
HRX - for standard extension driver 
HR2 - for low volume driver

HRX-25020 = 1/4-20 standard extension driver