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. 208-2616
BrandRS PRO
SGD0.087
Each (In a Pack of 100)
units
- - Uninsulated - 2.3mm 9.5mm 2.5mm² 1.5mm² 14AWG 16AWG M5 - Copper Tin
RS Stock No. 267-3638
BrandRS PRO
SGD0.171
Each (In a Pack of 100)
units
- - Insulated Nylon 4.3mm 6.6mm 1.5mm² 0.5mm² 16AWG 22AWG M4 (#8) Red Copper Tin
RS Stock No. 241-4681
BrandRS PRO
SGD6.873
Each (In a Pack of 4)
units
- - Uninsulated - 10.2mm - 150mm² 150mm² - - M10 - Copper Tin
RS Stock No. 433-034
BrandRS PRO
SGD0.135
Each (In a Pack of 100)
units
- - Uninsulated - 3.2mm 5.5mm 1.5mm² 0.5mm² 16AWG 22AWG M3 - Copper Tin
RS Stock No. 809-2313
BrandRS PRO
SGD0.967
Each (In a Pack of 25)
units
- - Uninsulated - 17mm 28mm 25mm² 25mm² 4AWG 4AWG 17mm - Copper -
RS Stock No. 208-2638
BrandRS PRO
SGD0.071
Each (In a Pack of 100)
units
- - Uninsulated - 3.7mm 6.6mm 2.5mm² 1.5mm² 14AWG 16AWG M3.5 - Copper Tin
RS Stock No. 613-9261
BrandRS PRO
SGD0.115
Each (In a Pack of 100)
units
- - Insulated Vinyl 5.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG M5 Red Copper Tin
RS Stock No. 267-3593
BrandRS PRO
SGD0.255
Each (In a Pack of 100)
units
- - Insulated Nylon 6.4mm 11.6mm 1.5mm² 0.5mm² 16AWG 22AWG M6 (1/4) Red Copper -
RS Stock No. 239-4133
BrandRS PRO
SGD0.175
Each (In a Pack of 100)
units
- - Insulated Nylon 4.3mm 6.5mm 0.5mm² 0.2mm² 22AWG 26AWG M4 Yellow Copper Tin
RS Stock No. 613-9457
BrandRS PRO
SGD0.324
Each (In a Pack of 100)
units
- - Insulated Vinyl 10.5mm 15mm 6mm² 4mm² 10AWG 12AWG M10 Yellow Copper Tin
RS Stock No. 267-3789
BrandRS PRO
SGD0.177
Each (In a Pack of 100)
units
- - Insulated Nylon 3.7mm 6.6mm 2.5mm² 1.5mm² 14AWG 16AWG M3.5 (#6) Blue Copper -
RS Stock No. 534-446
BrandRS PRO
SGD0.256
Each (In a Pack of 100)
units
- - Insulated PVC 5.3mm 9.5mm 6mm² 2.5mm² 10AWG 12AWG M5 Yellow Copper Tin
RS Stock No. 149-530
BrandRS PRO
SGD33.33
1 Reel of 500
Reel(s)
3130 - Insulated Vinyl 5.3mm 9.5mm 6mm² 4mm² 10AWG 12AWG M5 (#10) Yellow Copper Tin
RS Stock No. 613-9255
BrandRS PRO
SGD0.171
Each (In a Pack of 100)
units
- - Insulated Vinyl 6.4mm 12mm 1.5mm² 0.5mm² 16AWG 22AWG M6 Red Copper Tin
RS Stock No. 267-3622
BrandRS PRO
SGD0.111
Each (In a Pack of 100)
units
- - Insulated Nylon 4.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG M4.5 (#8) Red Copper -
RS Stock No. 149-546
BrandRS PRO
SGD56.21
1 Reel of 500
Reel(s)
3130 - Insulated Vinyl 4.3mm 9.5mm 6mm² 4mm² 10AWG 12AWG M4 (#8) Yellow Copper Tin
RS Stock No. 613-9334
BrandRS PRO
SGD0.188
Each (In a Pack of 100)
units
- - Insulated Vinyl 3.2mm 7.2mm 6mm² 4mm² 10AWG 12AWG M3 Yellow Copper Tin
RS Stock No. 208-2622
BrandRS PRO
SGD0.095
Each (In a Pack of 100)
units
- - Uninsulated - 4.3mm 8mm 2.5mm² 1.5mm² 14AWG 16AWG M4 - Copper Tin
RS Stock No. 613-9299
BrandRS PRO
SGD0.252
Each (In a Pack of 100)
units
- - Insulated Vinyl 8.4mm 11.6mm 1.5mm² 0.5mm² 16AWG 22AWG M8 Red Copper Tin
RS Stock No. 534-452
BrandRS PRO
SGD0.241
Each (In a Pack of 100)
units
- - Insulated PVC 4.3mm 9.5mm 6mm² 2.5mm² 10AWG 12AWG M4 Yellow Copper Tin
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