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 Shrouded/Unshrouded Stud Size Colour Contact Material
RS Stock No. 239-4105
BrandRS PRO
$0.20
Each (In a Pack of 100)
units
- - Insulated Nylon 2.7mm 5mm 0.5mm² 0.2mm² 22AWG 26AWG - M2.5 Yellow Copper
RS Stock No. 841-7645
BrandRS PRO
$2.506
Each (In a Pack of 50)
units
- - Uninsulated - 10.3mm 22.5mm 70mm² - - - - 10mm - Copper
RS Stock No. 613-9283
BrandRS PRO
$0.313
Each (In a Pack of 100)
units
- - Insulated Vinyl 8.4mm 15mm 6mm² 4mm² 10AWG 12AWG - M8 Yellow Copper
RS Stock No. 809-2268
BrandRS PRO
$0.274
Each (In a Pack of 100)
units
- - Uninsulated - 8.4mm 14mm 6mm² 2.5mm² 10AWG 12AWG - 8.4mm - Copper
RS Stock No. 267-3723
BrandRS PRO
$0.758
Each (In a Pack of 100)
units
- - Insulated Nylon 8.4mm 12mm 2.5mm² 1.5mm² 14AWG 16AWG - M8 (5/16) Blue Copper
RS Stock No. 809-2296
BrandRS PRO
$0.574
Each (In a Pack of 25)
units
- - Uninsulated - 8.4mm 14mm 16mm² 16mm² 6AWG 6AWG - 8.4mm - Copper
RS Stock No. 510-4955
BrandRS PRO
$10.76
1 Bag of 50
Bag(s)
- - Insulated Vinyl 1.7mm 4mm 1.5mm² 0.5mm² 16AWG 22AWG - 4 mm, #8 Red Copper
RS Stock No. 613-9306
BrandRS PRO
$0.30
Each (In a Pack of 100)
units
- - Insulated Vinyl 7.4mm 12mm 6mm² 4mm² 10AWG 12AWG - M7 Yellow Copper
RS Stock No. 613-9261
BrandRS PRO
$0.154
Each (In a Pack of 100)
units
- - Insulated Vinyl 5.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M5 Red Copper
RS Stock No. 510-4961
BrandRS PRO
$26.04
1 Bag of 50
Bag(s)
- - Insulated Vinyl 2.3mm 4.5mm 2.5mm² 1.5mm² 14AWG 16AWG - 4 mm, #8 Blue Copper
RS Stock No. 267-3919
BrandRS PRO
$0.349
Each (In a Pack of 100)
units
- - Insulated Nylon 3.7mm 7.2mm 6mm² 4mm² 10AWG 12AWG - M3.5 (#6) Yellow Copper
RS Stock No. 841-7639
BrandRS PRO
$0.869
Each (In a Pack of 50)
units
- - Uninsulated - 10.3mm 17mm 35mm² 35mm² - - - 10mm - Copper
RS Stock No. 809-2221
BrandRS PRO
$0.081
Each (In a Pack of 100)
units
- - Uninsulated - 2.7mm 6mm 1.5mm² 0.5mm² 16AWG 22AWG - #3 - Copper
RS Stock No. 208-2616
BrandRS PRO
$0.093
Each (In a Pack of 100)
units
- - Uninsulated - 2.3mm 9.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M5 - Copper
RS Stock No. 841-7649
BrandRS PRO
$2.634
Each (In a Pack of 50)
units
- - Uninsulated - 12.7mm 22.5mm 70mm² 70mm² - - - 12mm - Copper
RS Stock No. 841-7655
BrandRS PRO
$4.134
Each (In a Pack of 10)
units
- - Uninsulated - 10.3mm 27.5mm 120mm² 120mm² - - - 10mm - Copper
RS Stock No. 534-468
BrandRS PRO
$0.251
Each (In a Pack of 100)
units
- - Insulated PVC 3.7mm 9.1mm 6mm² 2.5mm² 10AWG 12AWG - M3.5 Yellow Copper
RS Stock No. 531-914
BrandRS PRO
$3.441
Each (In a Pack of 10)
units
- - Uninsulated - 10.4mm - 70mm² - - - - M10 - Copper
RS Stock No. 433-028
BrandRS PRO
$0.098
Each (In a Pack of 100)
units
- - Uninsulated - 3.7mm 6.6mm 1.5mm² 0.5mm² 16AWG 22AWG - M3.5 - Copper
RS Stock No. 841-7664
BrandRS PRO
$3.478
Each (In a Pack of 10)
units
- - Uninsulated - 12.7mm 27.5mm 120mm² 120mm² - - - 12mm - Copper
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