TR Fastenings - Brass Inserts for Plastic - Headed

Overview

Sonic-Sert - Headed

Material:

Brass

Other materials available to order

For use in:

Thermoplastics

Installation:

Ultrasonics

Heat

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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 size		L mm	B mm	C mm	N mm	K mm	Recommended Hole Size mm (-0.0/+0.1)	Minimum Wall Thickness mm
Metric	Unified	L mm	B mm	C mm	N mm	K mm	Recommended Hole Size mm (-0.0/+0.1)	Minimum Wall Thickness mm
M2*	2*	4.0	0.53	4.8	3.1	3.6	3.2	1.3
M2.5*	-	5.7	0.61	5.5	3.9	4.6	4.0	1.6
M3	4*	5.7	0.61	5.5	3.9	4.6	4.0	1.6
M3.5	6*	7.1	0.76	6.4	4.7	5.4	4.8	1.8
M4	8*	8.1	0.91	7.1	5.5	6.3	5.6	2.1
M5	10*	9.5	1.09	7.9	6.3	7.1	6.4	2.6
M6	¼”*	12.7	1.35	9.5	7.9	8.7	8.0	3.3
M8*	5/16”*	12.7	1.35	11.1	9.5	10.2	9.6	4.5
M10*	3/8”*	12.7	1.60	14.0	11.8	12.6	11.9	6.0

* Non-preferred – please enquire for availability

Further information

Sonic-Sert Information for designers

The Sonic-Sert has been designed for post mould installation into thermoplastics using heat or ultrasonics with the opposing knurls providing a combination of high pull out and torque resistance.

Advantages:

Rapid installation

Allows for thin walls in the boss

High pull out and torque resistance

Installation Data

The Sonic-Sert is installed using either heat or ultrasonics.

Heat Installation

Where heat is used you must ensure that the insert softens, but does not melt the plastic, which helps avoid flash forming around the top of the insert.

Ultrasonic Installation

Ultrasonic installation works best with low amplitude vibrations and enough power to soften the surrounding plastic.

Care should be taken to avoid excessive downward pressure being applied during installation which can result in the insert being forced into the hole rather than allowing the plastic to soften around it.

Installation instructions

Preferred range