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. 119-160
BrandRS PRO
$0.416
Each (In a Pack of 25)
units
- - Uninsulated - 6.4mm - 6mm² - - - - M6 - Copper
RS Stock No. 534-216
BrandRS PRO
$0.148
Each (In a Pack of 100)
units
- - Insulated PVC 4.16mm 6mm 1.5mm² 0.5mm² 16AWG 22AWG - M4 Red Copper
RS Stock No. 208-2565
BrandRS PRO
$0.062
Each (In a Pack of 100)
units
- - Uninsulated - 4.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M4 - Copper
RS Stock No. 433-034
BrandRS PRO
$0.16
Each (In a Pack of 100)
units
- - Uninsulated - 3.2mm 5.5mm 1.5mm² 0.5mm² 16AWG 22AWG - M3 - Copper
RS Stock No. 534-193
BrandRS PRO
$0.241
Each (In a Pack of 100)
units
- - Insulated PVC 6.35mm 11mm 1.5mm² 0.5mm² 16AWG 22AWG - M6 Red Copper
RS Stock No. 267-6441
BrandRS PRO
$0.366
Each (In a Pack of 100)
units
- - Insulated Nylon 6.4mm 12mm 6mm² 4mm² 10AWG 12AWG - M6 (1/4) Yellow Copper
RS Stock No. 531-065
BrandRS PRO
$1.431
Each (In a Pack of 10)
units
- - Uninsulated - 6.4mm - 25mm² - - - - M6 - Copper
RS Stock No. 534-238
BrandRS PRO
$0.059
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. 613-9508
BrandRS PRO
$0.086
Each (In a Pack of 100)
units
- - Insulated Vinyl 4.3mm 8.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M4 Blue Copper
RS Stock No. 613-9312
BrandRS PRO
$0.086
Each (In a Pack of 100)
units
- - Insulated Vinyl 5.3mm 8.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M5 Blue Copper
RS Stock No. 241-4631
BrandRS PRO
$2.109
Each (In a Pack of 10)
units
- - Uninsulated - 8mm - 35mm² - - - - M8 - Copper
RS Stock No. 534-575
BrandRS PRO
$0.196
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. 433-012
BrandRS PRO
$0.101
Each (In a Pack of 100)
units
- - Uninsulated - 5.3mm 10mm 1.5mm² 0.5mm² 16AWG 22AWG - M5 - Copper
RS Stock No. 119-176
BrandRS PRO
$0.407
Each (In a Pack of 25)
units
- - Uninsulated - 8.4mm - 6mm² - - - - M8 - Copper
RS Stock No. 534-200
BrandRS PRO
$0.127
Each (In a Pack of 100)
units
- - Insulated PVC 5.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M5 Red Copper
RS Stock No. 241-4647
BrandRS PRO
$8.679
Each (In a Pack of 10)
units
- - Uninsulated - 10.3mm - 95mm² - - - - M10 - Copper
RS Stock No. 531-043
BrandRS PRO
$0.95
Each (In a Pack of 10)
units
- - Uninsulated - 6.4mm - 16mm² - - - - M6 - Copper
RS Stock No. 208-2616
BrandRS PRO
$0.103
Each (In a Pack of 100)
units
- - Uninsulated - 2.3mm 9.5mm 2.5mm² 1.5mm² 14AWG 16AWG - M5 - Copper
RS Stock No. 208-2537
BrandRS PRO
$0.387
Each (In a Pack of 100)
units
- - Insulated PVC 10mm 15mm 6mm² 2.5mm² 10AWG 12AWG - M10 Yellow Copper
RS Stock No. 267-3773
BrandRS PRO
$0.215
Each (In a Pack of 100)
units
- - Insulated Nylon 4.3mm 6.6mm 2.5mm² 1.5mm² 14AWG 16AWG - M4 (#8) Blue Copper
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