There are many applications where a machine thread is required in wood. Threaded inserts are very useful because any assembly put together with them can be dismantled. They are therefore perfect for prototypes, jigs and permanent assemblies which are more rarely broken down but which require this feature as a part of the design. These zinc plated steel inserts have an external thread which is suited to wood. These inserts have an external thread with knife edges which bite deeply into the wood and keep the insert securely in place. The internal thread is a standard M6 metric standard machine thread which allows numerous fasteners to be used. What you get: All measurements are approximate and to be used as a guide only. Quality: All products are of the high quality and meet the relevant international standards. Stock: We carry a large inventory of stock so all orders can be sent within 24 business hours of your payment.  Postage:The standard Australia domestic delivery will be delivered by Australia Post with no tracking and it may take up to 4 business days in addition to eBay estimated delivery time. The tracking will be provided if the buyer purchases A$50 or more in one transaction, otherwise please choose alternative delivery option offered.