Overview

Expansion-Sert - Unheaded

Material:  

Brass 

Other materials available to order  

For use in:  

Thermosets  

Installation:  

Cold
 

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Note: Due to the fact that fastening applications differ greatly, the below 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.

Dimension data
 Dimensional Data    
Thread sizeL mmN mmB mmC mmRecommended Hole Size mm (-0.0/+0.1)Minimum Wall Thickness mm
MetricUnified
M2*2*3.93.20.434.83.22.4
M2.5*-4.74.00.515.54.03.2
M34*4.74.00.515.54.03.2
M3.56*6.34.70.666.44.83.6
M48*7.95.50.827.15.64.0
M510*9.46.30.997.96.44.8
M6¼”*12.67.91.259.58.06.0
M8*5/16”*12.69.51.2511.19.67.0

 

Performance Data for Expansion Sert in Polycarbonate
Thread sizePull-out (kN)Rotational Torque (Nm)
MetricUnified
M2*2*//
M2.5*-//
M34*0.762.85
M3.56*//
M48*15.15
M510*1.126.25
M6¼”*1.368.6
M8*5/16”*//

* Non-preferred – please enquire for availability

Further information

Expansion-Sert Information for designers

The Expansion-Sert is a press-in insert, designed for post mould installation into thermosets. The knurl pattern makes this insert ideal for hard thermosets.

Advantages:

Simple, press-in installation

Provides self-locking action on mating screw

Good pull out and torque resistance

Installation Data

The Expansion-Sert should be installed with a press that can provide a steady squeezing action to prevent damage to the mating boss. It is important that the mating screw fully penetrates the insert to achieve full expansion and optimum pull-out resistance.

Preferred range
Preferred Range
Thread (d)
M3M3.5M4M5M6
BRBRBRBRBR

BR - Brass, Self colour

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