# 5.1.3.4 Tongue and Groove Joint

> From: LOCTITE®X Digital Manual for Bonding (https://www.loctitex.com/en/manuals/bonding/5.1.3.4-tongue-and-groove-joint/)

##### 5.1.3.4 Tongue and Groove Joint

A tongue and groove joint is made with an edge that consists of a groove running the entire length of the joint and a tongue that fits into the groove. This feature of the tongue and groove creates a mechanically strong and aesthetically pleasing joint. The greater the contact surface, the greater the distribution of stresses along the contact surface. This joint is well suited to a number of stresses, as the joint geometry counteracts many of the weaknesses exhibited under peel stress or stresses perpendicular to the bond line.

_Figure 108 Tongue and groove joint_

![Figure 108 Tongue and groove joint](/en/manuals/bonding/assets/img/bonded-adhesive-joint-design-tongueandgroove-strong.jpg)