Screw Insulators

A screw insulator can also be known as a shoulder washer.

The screw insulator is designed to insulate screws, rivets or wire from an assembly.

Features and Benefits of a screw insulator

• Thermally insulate a screw from making metal to metal contact
• Reduce Vibration
• Act as Spacers and Guides
• Are Strong and Corrosion Resistant
• Can be Used as Seal in Some Applications

Why and when to use a screw insulator?

Screw insulators can be inserted into a housing to provide a bearing surface for rotary applications.
The flange on the screw insulator is used to locate the bushing when it is installed or to provide a thrust bearing surface.
Screw Insulators are used to prevent heat flow through the screw to other parts of the thermal assembly.

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Description Price For Screw Size Inside Diameter Body Outside Diameter Body Length Flange Diameter Flange Thickness Material
RS Stock No. 178-670
BrandRS PRO
MYR20.72
1 Bag of 50
Bag(s)
M3 3.1mm 4mm 4mm 6.2mm 1 mm Nylon
RS Stock No. 178-759
BrandRS PRO
MYR8.13
1 Bag of 50
Bag(s)
M4 4.1mm 6mm 7mm 8.2mm 1.5 mm Nylon
RS Stock No. 178-658
BrandRS PRO
MYR14.99
1 Bag of 50
Bag(s)
M3 3.1mm 4mm 2mm 6.2mm 1 mm Nylon
RS Stock No. 178-866
BrandRS PRO
MYR21.90
1 Bag of 50
Bag(s)
M8 8mm 10mm 4mm 14.2mm 2.5 mm Nylon
RS Stock No. 178-872
BrandRS PRO
MYR26.16
1 Bag of 50
Bag(s)
M8 8.1mm 10mm 6mm 14.2mm 2.5 mm Nylon
RS Stock No. 178-715
BrandRS PRO
MYR13.38
1 Bag of 50
Bag(s)
M3 3.1mm 4mm 8mm 6.2mm 1 mm Nylon
RS Stock No. 178-664
BrandRS PRO
MYR23.46
1 Bag of 50
Bag(s)
M3 3.1mm 4mm 3mm 6.2mm 1 mm Nylon
RS Stock No. 203-1315
Mfr. Part No.CAJ008GFP
BrandSilfox
MYR0.95
Each (In a Pack of 100)
units
- 3mm 3.8mm 0.6mm 6.1mm - PET
RS Stock No. 178-743
BrandRS PRO
MYR13.87
1 Bag of 50
Bag(s)
M4 4.1mm 6mm 5mm 8.2mm 1.5 mm Nylon
RS Stock No. 178-816
BrandRS PRO
MYR13.23
1 Bag of 50
Bag(s)
M5 5.1mm 7mm 9mm 10.2mm 2 mm Nylon
RS Stock No. 178-771
BrandRS PRO
MYR12.99
1 Bag of 50
Bag(s)
M5 5.1mm 7mm 3mm 10.2mm 2 mm Nylon
RS Stock No. 203-1321
Mfr. Part No.CAJ005D
BrandSilfox
MYR2.083
Each (In a Pack of 100)
units
- 4.8mm 6.3mm 2.2mm 10.2mm - PET
RS Stock No. 178-888
BrandRS PRO
MYR11.09
1 Bag of 50
Bag(s)
M8 8.1mm 10mm 8mm 14.2mm 2.5 mm Nylon
RS Stock No. 178-822
BrandRS PRO
MYR24.39
1 Bag of 50
Bag(s)
M6 6.1mm 8mm 4mm 12.2mm 2 mm Nylon
RS Stock No. 178-686
BrandRS PRO
MYR24.50
1 Bag of 50
Bag(s)
M3 3.1mm 4mm 5mm 6.2mm 1 mm Nylon
RS Stock No. 203-1258
Mfr. Part No.CAJ010GFP
BrandSilfox
MYR1.596
Each (In a Pack of 100)
units
- 2.8mm 3.6mm 2.5mm 6mm - PET
RS Stock No. 203-1264
Mfr. Part No.CAJ006D
BrandSilfox
MYR0.973
Each (In a Pack of 100)
units
- 3mm 3.5mm 0.6mm 5.9mm - PET
RS Stock No. 203-1286
Mfr. Part No.CAJ001N
BrandSilfox
MYR3.686
Each (In a Pack of 100)
units
- 6.4mm 7.9mm 2.3mm 12.6mm - Nylon
RS Stock No. 178-692
BrandRS PRO
MYR18.69
1 Bag of 50
Bag(s)
M3 3.1mm 4mm 6mm 6.2mm 1 mm Nylon
RS Stock No. 178-787
BrandRS PRO
MYR17.48
1 Bag of 50
Bag(s)
M5 5.1mm 7mm 4mm 10.2mm 2 mm Nylon
Related Products
Although primarily intended for the isolation of metal ...
Description:
Although primarily intended for the isolation of metal screws, these insulating spacers are also suitable for use as lightly loaded bearings.
Set of insulating bushes for insulation between the ...
Description:
Set of insulating bushes for insulation between the component and the heatsink.Available in polyester (version D); nylon (version N) or fibreglass reinforced polyester (GFP version).