Threaded Inserts

A threaded insert is a cylindrical tube-shaped piece of metal with an internal thread. Threaded inserts are designed to be placed into existing holes to provide a threaded receptacle so that screws, bolts or other fixings can be installed. Threaded inserts with an external thread are also used to strengthen existing threads or to repair damaged threads usually in metalwork.
How to fit a threaded insert
The first step is to drill, mill tap or cut a hole of the recommended size into the material the insert will be embedded. The second step depends entirely on the type of insert, the material it will be used with and how the insert will be fitted.
Types of Threaded Insert
For plastic
Plastics are generally categorized into two main types Thermoplastic and Thermoset. These two plastics may sound similar but their physical characteristics are very different. Therefore the type of insert used is different.
• Thermoset
Thermoset plastics, due to cross-linking polymers at the curing stage enhance the materials physical and mechanical properties. This process makes thermoset plastic easier to mill and drill, so a press-fit threaded insert is better for this application.
• Thermoplastic
Threaded inserts for thermoplastic materials are more specialized and require a slightly different approach. Inserts are installed by heating the metal insert to a specific temperature. Once the desired temperature is reached the threaded insert is pressed onto the plastic. The heat from the metal melts the plastic and the insert fits into the desired position. When the plastic cools the insert is retained.
Threaded inserts for metal
Threaded inserts for metal have an external thread. The insert is simply matched by thread size and screwed into the existing threaded hole.
Threaded inserts for wood
It is possible to use both press-in and thread-in inserts in wood. If however a hardwood is being used it is advised to prepare a slightly larger hole than the insert and secure with a suitable adhesive. Hardwoods have a higher chance of cracking than other woods.
Materials and finishes
Threaded inserts are available in various materials and finishes and metric course threads to suit every application.
• Brass
• Steel
• Stainless Steel (316 & 302)
• Bright zinc plated
• Clear passivated
• Galvanised
• Plain
Thread sizes
M3, M3.5, M4, M5, M6, M8 and M10

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Omschrijving Prijs Thread Size Flange Diameter Fixing Hole Diameter Body Outside Diameter Body Depth Material Stainless Steel Type Finish Thickness of Material Maximum Thickness of Material Minimum
RS-stocknr. 278-534
FabrikantRS PRO
€ 17,02
1 Bag of 100
Bag(s)
M3 - 4mm 4.22mm 4.78mm Brass - - - 6.7mm
RS-stocknr. 278-584
FabrikantRS PRO
€ 27,87
1 Bag of 100
Bag(s)
M3 - 4mm 4.22mm 4.78mm Brass - - - 6.2mm
RS-stocknr. 278-556
FabrikantRS PRO
€ 24,53
1 Bag of 100
Bag(s)
M4 - 5.6mm 5.64mm 7.95mm Brass - - - 10.2mm
RS-stocknr. 278-607
FabrikantRS PRO
€ 36,10
1 Bag of 100
Bag(s)
M4 - 5.6mm 5.64mm 7.95mm Brass - - - 9.4mm
RS-stocknr. 278-540
FabrikantRS PRO
€ 18,54
1 Bag of 100
Bag(s)
M3.5 - 4.8mm 5.06mm 6.35mm Brass - - - 8.4mm
RS-stocknr. 278-578
FabrikantRS PRO
€ 43,10
1 Bag of 100
Bag(s)
M6 - 8mm 8.26mm 12.7mm Brass - - - 16mm
RS-stocknr. 278-629
FabrikantRS PRO
€ 55,54
1 Bag of 100
Bag(s)
M6 - 8mm 8.26mm 12.7mm Brass - - - 14.8mm
RS-stocknr. 278-562
FabrikantRS PRO
€ 30,58
1 Bag of 100
Bag(s)
M5 - 6.4mm 6.65mm 9.35mm Brass - - - 12.2mm
RS-stocknr. 278-613
FabrikantRS PRO
€ 41,84
1 Bag of 100
Bag(s)
M5 8mm 6.4mm 6.65mm 9.53mm Brass - - - 11.2mm
RS-stocknr. 768-0739
FabrikantRS PRO
€ 32,07
1 Bag of 50
Bag(s)
M6 15.88mm 11.43mm 11.13mm 18.57mm Steel - Bright Zinc Plated 4.75mm 0.38mm
RS-stocknr. 278-590
FabrikantRS PRO
€ 24,99
1 Bag of 100
Bag(s)
M3.5 - 4.8mm 5.06mm 6.35mm Brass - - - 7.8mm
RS-stocknr. 768-0723
FabrikantRS PRO
€ 29,82
1 Bag of 50
Bag(s)
M4 11.89mm 8.38mm 8.08mm 21.36mm Steel - Bright Zinc Plated 9.53mm 4.75mm
RS-stocknr. 204-0623
FabrikantRS PRO
€ 64,07
1 Bag of 100
Bag(s)
M6 9.5mm 8mm 9.5mm 12.7mm Brass - - 3.3mm -
RS-stocknr. 204-0622
FabrikantRS PRO
€ 42,15
1 Bag of 100
Bag(s)
M5 7.9mm 6.4mm 7.9mm 9.5mm Brass - - 2.6mm -
RS-stocknr. 204-0617
FabrikantRS PRO
€ 22,04
1 Bag of 100
Bag(s)
M4 6.3mm 5.6mm 6.3mm 8.2mm Brass - - 2.1mm -
RS-stocknr. 204-0620
FabrikantRS PRO
€ 27,52
1 Bag of 100
Bag(s)
M3 5.5mm 4mm 5.5mm 5.7mm Brass - - 1.6mm -
RS-stocknr. 768-0748
FabrikantRS PRO
€ 32,76
1 Bag of 50
Bag(s)
M6 15.88mm 11.43mm 11.13mm 23.34mm Steel - Bright Zinc Plated 9.53mm 4.75mm
RS-stocknr. 768-0732
FabrikantRS PRO
€ 27,53
1 Bag of 50
Bag(s)
M5 13.49mm 10.16mm 9.7mm 18.19mm Steel - Bright Zinc Plated 4.75mm 0.38mm
RS-stocknr. 204-0616
FabrikantRS PRO
€ 14,69
1 Bag of 100
Bag(s)
M3 4.6mm 4mm 4.6mm 5.7mm Brass - - 1.6mm -
RS-stocknr. 204-0619
FabrikantRS PRO
€ 58,59
1 Bag of 100
Bag(s)
M6 8.7mm 8mm 8.7mm 12.7mm Brass - - 3.3mm -