Crimp Ring Terminals

A crimp ring terminal is a short metal tube with flat washer type ring attached. The tube or barrel end of the crimp is a hollow tube where the stranded wire is inserted and crimped. The contact or connection end is a flat ring with a central hole which connects to a stud or bolt. Ring terminals are insulated or non-insulated.
What does it do?
An electrical crimp is a solderless electrical connection. Ring terminals are used to connect wiring to screws and studs.
Why do you need it / applications?
Electrical panels
Terminal blocks
Wiring harnesses
Types
Crimp terminals are available in a wide variety of ring sizes and wire sizes. The CSA (cross sectional area) or AWG (American wire gauge) of the stranded wire is the most critical. The size of the stranded wire must be adequately matched to meet the amperage. The size of the ring is matched to the bolt or stud size, usually in a metric measurement.
Insulated Terminals
DIN 46237 colour coding is the most popular type of crimp terminal. Colour coding is used to denote a wire size.
• Red 0.5 mm² to 1.5 mm² -
• Yellow 2.5 mm² to 6 mm²
• Blue 1.5 mm² to 2.5 mm²
Other colours by different manufactures are now available.
Non-insulated
Non-insulated terminals are bigger terminals. Non-insulated terminals connect to bigger studs and bolts. Non-insulated ring terminals have the capacity to except larger stranded wire. More specialised tooling is required for these heavy-duty terminals.

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Description Price Series Series Number Insulation Insulation Material Inner Ring Diameter Outer Ring Diameter Maximum Wire Size mm² Minimum Wire Size mm² Maximum Wire Size AWG Minimum Wire Size AWG Shrouded/Unshrouded Stud Size Colour Contact Material
RS Stock No. 613-9413
BrandRS PRO
£0.132
Each (In a Pack of 100)
Units
- - Insulated Vinyl 6.4mm 12mm 6mm² 4mm² 10AWG 12AWG - M6 Yellow Copper
RS Stock No. 149-704
BrandRS PRO
£46.44
1 Reel of 800
Reel(s)
3110 - Insulated Vinyl 4.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M4 (#8) Red Copper
RS Stock No. 534-216A
BrandRS PRO
£0.022
Each (In a Pack of 1000)
Units
- - Insulated PVC 4.16mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M4 Red Copper
RS Stock No. 534-216
BrandRS PRO
£0.05
Each (In a Pack of 100)
Units
- - Insulated PVC 4.16mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M4 Red Copper
RS Stock No. 149-681
BrandRS PRO
£60.06
1 Reel of 800
Reel(s)
3150 - Insulated Vinyl 6.4mm 11.6mm 1.5mm² 0.5mm² 16AWG 22AWG - M6 (1/4) Blue Copper
RS Stock No. 534-569
BrandRS PRO
£0.104
Each (In a Pack of 100)
Units
- - Insulated PVC 6.35mm 10.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M6 Blue Copper
RS Stock No. 534-569A
BrandRS PRO
£0.043
Each (In a Pack of 1000)
Units
- - Insulated PVC 6.35mm 10.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M6 Blue Copper
RS Stock No. 531-087
BrandRS PRO
£0.226
Each (In a Pack of 10)
Units
- - Uninsulated - 10.4mm - 25mm² - - - - M10 - Copper
RS Stock No. 531-021
BrandRS PRO
£0.204
Each (In a Pack of 25)
Units
- - Uninsulated - 6.4mm - 10mm² - - - - M6 - Copper
RS Stock No. 534-200A
BrandRS PRO
£0.027
Each (In a Pack of 1000)
Units
- - Insulated PVC 5.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M5 Red Copper
RS Stock No. 149-265
BrandRS PRO
£15.18
1 Reel of 800
Reel(s)
3110 - Insulated Vinyl 5.3mm 10mm 1.5mm² 0.5mm² 16AWG 22AWG - M5 (#10) Red Copper
RS Stock No. 534-200
BrandRS PRO
£0.053
Each (In a Pack of 100)
Units
- - Insulated PVC 5.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M5 Red Copper
RS Stock No. 149-253
BrandRS PRO
£21.21
1 Reel of 500
Reel(s)
3130 - Insulated Vinyl 6.4mm 12mm 6mm² 4mm² 10AWG 12AWG - M6 (1/4) Yellow Copper
RS Stock No. 534-430
BrandRS PRO
£0.16
Each (In a Pack of 100)
Units
- - Insulated PVC 6.35mm 11mm 6mm² 2.5mm² 10AWG 12AWG - M6 Yellow Copper
RS Stock No. 534-238A
BrandRS PRO
£0.026
Each (In a Pack of 1000)
Units
- - Insulated PVC 3.2mm 5.5mm 1.5mm² 0.5mm² 16AWG 22AWG - M3 Red Copper
RS Stock No. 534-238
BrandRS PRO
£0.043
Each (In a Pack of 100)
Units
- - Insulated PVC 3.2mm 5.5mm 1.5mm² 0.5mm² 16AWG 22AWG - M3 Red Copper
RS Stock No. 149-675
BrandRS PRO
£44.24
1 Reel of 800
Reel(s)
3150 - Insulated Vinyl 5.3mm 9.5mm 1.5mm² 0.5mm² 16AWG 22AWG - M5 (#10) Blue Copper
RS Stock No. 534-575A
BrandRS PRO
£0.019
Each (In a Pack of 1000)
Units
- - Insulated PVC 5.3mm 9.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M5 Blue Copper
RS Stock No. 534-575
BrandRS PRO
£0.081
Each (In a Pack of 100)
Units
- - Insulated PVC 5.3mm 9.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M5 Blue Copper
RS Stock No. 531-043
BrandRS PRO
£0.365
Each (In a Pack of 10)
Units
- - Uninsulated - 6.4mm - 16mm² - - - - M6 - Copper