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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Description Price 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庫存編號 866-0326
製造零件編號US 4008-TI5P
BrandPramet
TWD217.00
單位
- - - - - - - - - -
RS庫存編號 278-534
BrandRS PRO
TWD480.00
毎包:100 個
Bag(s)
M3 - 4mm 4.22mm 4.78mm Brass - - - 6.7mm
RS庫存編號 664-7355
製造零件編號56000000079/01
BrandBöllhoff
TWD1,425.00
毎批:100 個
Lot(s)
M5 - - - 10mm Steel - Galvanised - -
RS庫存編號 278-590
BrandRS PRO
TWD685.00
毎包:100 個
Bag(s)
M3.5 - 4.8mm 5.06mm 6.35mm Brass - - - 7.8mm
RS庫存編號 768-0729
BrandRS PRO
TWD689.00
毎包:50 個
Bag(s)
M4 11.89mm 8.38mm 8.08mm 16.59mm Steel - Bright Zinc Plated 4.75mm 0.38mm
RS庫存編號 768-0732
BrandRS PRO
TWD768.00
毎包:50 個
Bag(s)
M5 13.49mm 10.16mm 9.7mm 18.19mm Steel - Bright Zinc Plated 4.75mm 0.38mm
RS庫存編號 278-607
BrandRS PRO
TWD743.00
毎包:100 個
Bag(s)
M4 - 5.6mm 5.64mm 7.95mm Brass - - - 9.4mm
RS庫存編號 278-613
BrandRS PRO
TWD863.00
毎包:100 個
Bag(s)
M5 8mm 6.4mm 6.65mm 9.53mm Brass - - - 11.2mm
RS庫存編號 278-578
BrandRS PRO
TWD886.00
毎包:100 個
Bag(s)
M6 - 8mm 8.26mm 12.7mm Brass - - - 16mm
RS庫存編號 667-9835
製造零件編號AVKALS3T-470-3.3
BrandAVK
TWD700.00
毎包:100 個
Bag(s)
M4 9.91mm 6.75mm 6.73mm 7.75mm - - Plain 3.3mm 2mm
RS庫存編號 425-7569
製造零件編號23307080230
BrandBöllhoff
TWD1,568.00
毎批:100 個
Lot(s)
M8 16mm 11mm - 18mm Steel - Plain 3mm 0.5mm
RS庫存編號 278-629
BrandRS PRO
TWD1,152.00
毎包:100 個
Bag(s)
M6 - 8mm 8.26mm 12.7mm Brass - - - 14.8mm
全新
RS庫存編號 204-0619
BrandRS PRO
TWD2,336.00
毎包:100 個
Bag(s)
M6 12.7mm 8mm 12.7mm 12.7mm Brass - - - -
RS庫存編號 623-5612
BrandPOP
TWD987.00
毎包:100 個
Bag(s)
M5 7.77mm 7mm 6.9mm 9.4mm Steel - Clear Passivated, Galvanised - -
RS庫存編號 667-9839
製造零件編號AVKALS3T-580-5.7
BrandAVK
TWD873.00
毎包:100 個
Bag(s)
M5 10.54mm 7.6mm 7.52mm 8mm - - Plain 5.7mm 3.3mm
RS庫存編號 768-0739
BrandRS PRO
TWD880.00
毎包:50 個
Bag(s)
M6 15.88mm 11.43mm 11.13mm 18.57mm Steel - Bright Zinc Plated 4.75mm 0.38mm
RS庫存編號 667-9841
製造零件編號AVKALS3T-8125-7.9
BrandAVK
TWD985.00
毎包:50 個
Bag(s)
M8 17.4mm 13.5mm 13.46mm 10.8mm - - Plain 7.9mm 3.8mm
RS庫存編號 194-427
BrandAVK
TWD707.00
毎包:100 個
Bag(s)
M5 10.54mm 7.6mm 7.52mm 8mm - - Plain 3.3mm 0.5mm
RS庫存編號 425-7626
製造零件編號34367100235
BrandBöllhoff
TWD2,541.00
毎批:100 個
Lot(s)
M10 14mm 13mm - 21mm Steel - Plain 3.5mm 0.7mm
RS庫存編號 212-676
製造零件編號23306050233/01
BrandBöllhoff
TWD1,840.00
毎包:100 個
Bag(s)
M5 9mm 7mm - 11.8mm Stainless Steel - Plain 1.5mm 0.7mm