Threaded Rod - Metric Left Hand

About Metric Left Hand Thread

This is the most common thread type in production today. Left-Hand Thread is the term that is used for a thread where the nut tightens in the opposite direction to normal. It is commonly used on items that rotate in a manner that could cause a normal right-handed nut to loosen; for example, the pedal of a bicycle on the left-hand side.

Metric Thread Specifications

Customers should note that this product is usually specified as M, then a number x another number (this signifies the thread diameter and the length of the fastener).


For example M4 x 30 means that the major thread diameter (the external distance across the outside of the thread) is 4mm and the length is 30mm. Length is usually measured from the underside of the fastener head.

Usage of Threaded Rods

Threaded Rod has a variety of different applications. It is commonly used to connect two materials, as well as to add stability to structures by tying them together during construction.


Two lengths of Threaded Rod can be joined together by using Studding Connector Nuts (or Long Nuts) as they are sometimes called.

Please note that full-lengths can be cut as required; more information on this can be found on our Guides and Tips: 'How to cut Threaded Rod'.

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