Ring Terminals

A 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.


Where are they used?



  • Electrical panels 

  • Terminal blocks

  • Wiring harnesses


Types of Ring Terminal


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 mm

  • Yellow 2.5 mm² to 6 mm

  • Blue 1.5 mm² to 2.5 mm


Other colours are 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 Stud Size Colour Contact Material Contact Plating
RS Stock No. 531-043
BrandRS PRO
SGD0.779
Each (In a Pack of 10)
units
- - Uninsulated - 6.4mm - 16mm² - - - M6 - Copper Tin
RS Stock No. 604-8165
Mfr. Part No.2-M4
BrandJST
SGD15.50
1 Bag of 100
Bag(s)
- - Uninsulated - - - 2.6mm² 1mm² 14AWG 16AWG 4mm - - -
RS Stock No. 531-920
BrandRS PRO
SGD3.90
Each (In a Pack of 10)
units
- - Uninsulated - 12.8mm - 70mm² - - - M12 - Copper Tin
RS Stock No. 613-9378
BrandRS PRO
SGD0.302
Each (In a Pack of 100)
units
- - Insulated Vinyl 3.2mm 7.2mm 6mm² 4mm² 10AWG 12AWG M4 Yellow Copper Tin
RS Stock No. 534-430
BrandRS PRO
SGD0.365
Each (In a Pack of 100)
units
- - Insulated PVC 6.35mm 11mm 6mm² 2.5mm² 10AWG 12AWG M6 Yellow Copper Tin
RS Stock No. 241-4704
BrandRS PRO
SGD9.403
Each (In a Pack of 4)
units
CT - Uninsulated - 12.9mm - 150mm² 150mm² - - M12 - Copper Tin
RS Stock No. 241-4631
BrandRS PRO
SGD1.824
Each (In a Pack of 10)
units
- - Uninsulated - 8mm - 35mm² - - - M8 - Copper Tin
RS Stock No. 267-6441
BrandRS PRO
SGD0.359
Each (In a Pack of 100)
units
- - Insulated Nylon 6.4mm 12mm 6mm² 4mm² 10AWG 12AWG M6 (1/4) Yellow Copper -
RS Stock No. 842-040
Mfr. Part No.130102
SGD0.227
Each (In a Pack of 100)
units
PLASTI-GRIP - Insulated Vinyl 5mm 8.7mm 2.6mm² 1mm² 14AWG 16AWG M5 Blue Copper Tin
RS Stock No. 136-1646
Mfr. Part No.130102
SGD169.05
1 Box of 1000
Box(es)
PLASTI-GRIP - Insulated Vinyl 5mm 8.7mm 2.6mm² 1mm² 14AWG 16AWG M5 Blue Copper Tin
RS Stock No. 531-059
BrandRS PRO
SGD0.847
Each (In a Pack of 10)
units
- - Uninsulated - 8.4mm - 16mm² - - - M8 - Copper Tin
RS Stock No. 534-424
BrandRS PRO
SGD0.33
Each (In a Pack of 100)
units
- - Insulated PVC 8.4mm 14mm 6mm² 2.5mm² 10AWG 12AWG M8 Yellow Copper Tin
RS Stock No. 531-015
BrandRS PRO
SGD0.546
Each (In a Pack of 25)
units
- - Uninsulated - 5.3mm - 10mm² - - - M5 - Copper Tin
RS Stock No. 398-2006
Mfr. Part No.3R10
BrandKlauke
SGD1.126
Each (In a Bag of 10)
units
- - Uninsulated - - - 16mm² 16mm² - - M10 - Copper Tin
RS Stock No. 267-3644
BrandRS PRO
SGD0.173
Each (In a Pack of 100)
units
- - Insulated Nylon 3.7mm 6.6mm 1.5mm² 0.5mm² 16AWG 22AWG M3.5 (#6) Red Copper -
RS Stock No. 119-160
BrandRS PRO
SGD0.345
Each (In a Pack of 25)
units
- - Uninsulated - 6.4mm - 6mm² - - - M6 - Copper Tin
RS Stock No. 534-597
BrandRS PRO
SGD0.113
Each (In a Pack of 100)
units
- - Insulated PVC 3.7mm 6.6mm 2.5mm² 1.5mm² 14AWG 16AWG M3.5 Blue Copper Tin
RS Stock No. 604-8070
Mfr. Part No.0.5-3
BrandJST
SGD12.84
1 Bag of 100
Bag(s)
- - Uninsulated - - - 0.5mm² 0.2mm² 22AWG 26AWG 3mm - - -
RS Stock No. 241-4653
BrandRS PRO
SGD6.915
Each (In a Pack of 4)
units
- - Uninsulated - 10mm - 120mm² - - - M10 - Copper Tin
RS Stock No. 531-885
BrandRS PRO
SGD1.847
Each (In a Pack of 10)
units
- - Uninsulated - 10.4mm - 35mm² - - - M10 - Copper Tin