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. 119-176
BrandRS PRO
$0.367
Each (In a Pack of 25)
units
- - Uninsulated - 8.4mm - 6mm² - - - - M8 - Copper
RS Stock No. 809-2262
BrandRS PRO
$0.35
Each (In a Pack of 100)
units
- - Uninsulated - 10.5mm 18mm 6mm² 2.5mm² 10AWG 12AWG - 10.5mm - Copper
RS Stock No. 208-2537
BrandRS PRO
$0.349
Each (In a Pack of 100)
units
- - Insulated PVC 10mm 15mm 6mm² 2.5mm² 10AWG 12AWG - M10 Yellow Copper
RS Stock No. 267-3622
BrandRS PRO
$0.344
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. 809-2307
BrandRS PRO
$0.509
Each (In a Pack of 25)
units
- - Uninsulated - 8.4mm 16mm 25mm² 25mm² 4AWG 4AWG - 8.4mm - Copper
RS Stock No. 809-2259
BrandRS PRO
$0.135
Each (In a Pack of 100)
units
- - Uninsulated - 3.7mm 8mm 6mm² 2.5mm² 10AWG 12AWG - #6 - Copper
RS Stock No. 531-885
BrandRS PRO
$1.88
Each (In a Pack of 10)
units
- - Uninsulated - 10.4mm - 35mm² - - - - M10 - Copper
RS Stock No. 531-065
BrandRS PRO
$1.356
Each (In a Pack of 10)
units
- - Uninsulated - 6.4mm - 25mm² - - - - M6 - Copper
RS Stock No. 149-546
BrandRS PRO
$67.99
1 Reel of 500
Reel(s)
3130 - Insulated Vinyl 4.3mm 9.5mm 6mm² 4mm² 10AWG 12AWG - M4 (#8) Yellow Copper
RS Stock No. 613-9312
BrandRS PRO
$0.077
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. 841-7623
BrandRS PRO
$0.538
Each (In a Pack of 50)
units
- - Uninsulated - 8.3mm 13mm 25mm² 25mm² - - - 8mm - Copper
RS Stock No. 613-9429
BrandRS PRO
$0.64
Each (In a Pack of 100)
units
- - Insulated Vinyl 13mm 19.2mm 6mm² 4mm² 10AWG 12AWG - M12 Yellow Copper
RS Stock No. 534-452
BrandRS PRO
$0.265
Each (In a Pack of 100)
units
- - Insulated PVC 4.3mm 9.5mm 6mm² 2.5mm² 10AWG 12AWG - M4 Yellow Copper
RS Stock No. 208-2565
BrandRS PRO
$0.097
Each (In a Pack of 100)
units
- - Uninsulated - 4.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG - M4 - Copper
RS Stock No. 267-3638
BrandRS PRO
$0.394
Each (In a Pack of 100)
units
- - Insulated Nylon 4.3mm 6.6mm 1.5mm² 0.5mm² 16AWG 22AWG - M4 (#8) Red Copper
RS Stock No. 809-2224
BrandRS PRO
$0.081
Each (In a Pack of 100)
units
- - Uninsulated - 3.7mm 6mm 1.5mm² 0.5mm² 16AWG 22AWG - #6 - Copper
RS Stock No. 809-2313
BrandRS PRO
$1.192
Each (In a Pack of 25)
units
- - Uninsulated - 17mm 28mm 25mm² 25mm² 4AWG 4AWG - 17mm - Copper
RS Stock No. 267-3903
BrandRS PRO
$0.572
Each (In a Pack of 100)
units
- - Insulated Nylon 4.3mm 7.2mm 6mm² 4mm² 10AWG 12AWG - M4 (#8) Yellow Copper
RS Stock No. 613-9457
BrandRS PRO
$0.353
Each (In a Pack of 100)
units
- - Insulated Vinyl 10.5mm 15mm 6mm² 4mm² 10AWG 12AWG - M10 Yellow Copper
RS Stock No. 267-3644
BrandRS PRO
$0.266
Each (In a Pack of 100)
units
- - Insulated Nylon 3.7mm 6.6mm 1.5mm² 0.5mm² 16AWG 22AWG - M3.5 (#6) Red Copper
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