Hank-Sert Rivet Bush Installation Guide

This article provides a 4-point step-by-step storyboard style installation guide for the Hank-Sert® Rivet Bushes.

The round pattern Hank-Sert® rivet bush features a design with the serrations on the contact face for use in applications requiring maximum torsional resistance and a flush fit. Like the hexagon and round bush, the Hank-sert pattern is designed to be riveted or ‘peened’ over the sheet metal to provide a strong and re-usable thread assembly.


Step 1

Ensure the correct spigot length has been selected for sheet thickness being used.  Select the appropriate hole size from the table below for the bush required. Punch the hole diameter into the sheet material.



Step 2

Insert the spigot end into the hole on the side opposite the mating face.  Ensure both bush and plate are aligned along the same axis. If the bush is not seated ‘square’ in the hole, the joint will be imperfect and mating threads will mis-align.



Step 3

Automated Installation

Hank-Sert:: Step 3b Using a profiled punch, apply only sufficient pressure to ‘peen’ the spigot and its serrations over into the sheet metal.  Providing Torsional (rotational) resistance. After installation the spigot is to be flush. 


Step 4

Manual Installation

Hank-Sert:: Step 4b Using the profile punch or ball bearing, locate either tool onto the spigot and strike with a hammer to ‘peen’ the spigot and embed the serrated face into the sheet metal


Several blows may be required to fully peen over the spigot to make a flush and secure fit.





Using the table below with reference to the specific size of the Hank Sert Rivet Bush, select the correct Hole size for the installation of the fastener.  

For the best dimensional accuracy and therefore performance, TR Fastenings recommends that all holes in the sheet metal application be punched.  To install the fastener into the punched Hole a profiled punch or a ball bearing of a suitable size is required. 

The profiled punch can be sourced from the TR Fastenings sales team.  

Note it is essential that the recommended Hole tolerances be observed.







Thread formM2.5M3M3.5M4M5M6M8M10M12
Diameter of spigot +0.00 -0.13mmA5.545.546.736.737.929.5212.7015.8719.05
Width across flats ±0.15mmB7.927.929.529.5211.1012.7015.8719.0525.40
Depth of body ±0.13mmC3.
Recommended hole size +0.05 -0.00mm5.545.546.736.737.929.5212.7015.8719.05
Thread FormBSW/F-1/8™-5/32™3/16™1/4™5/16™3/8™1/2™
Diameter of spigot +0.00 -0.05™A.
Width across flats ±0.010™B.32.312.375.375.437.500.625.7501.000
Depth of body ±0.005™C.
Recommended hole size +0.002 -0.000™.

Joint Guidlines

Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.