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. 163-9153
Mfr. Part No.323062
SGD0.644
Each (In a Box of 500)
units
STRATO-THERM - Uninsulated - 5mm 9.53mm 6.6mm² 2.6mm² 10AWG 12AWG M5 - Copper Nickel
RS Stock No. 534-193
BrandRS PRO
SGD0.219
Each (In a Pack of 100)
units
- - Insulated PVC 6.35mm 11mm 1.5mm² 0.5mm² 16AWG 22AWG M6 Red Copper Tin
RS Stock No. 842-056
Mfr. Part No.34160
SGD0.156
Each (In a Pack of 100)
units
PLASTI-GRIP - Insulated Vinyl 4.34mm 8.71mm 2.6mm² 1mm² 14AWG 16AWG M4 Blue Copper Tin
RS Stock No. 790-6961
Mfr. Part No.19323-0005
BrandMolex
SGD0.515
Each (In a Pack of 50)
units
VersaKrimp - Uninsulated - 5.39mm 11.86mm 1mm² 0.5mm² - - M5 (#10) - Copper Alloy Tin
RS Stock No. 267-3616
BrandRS PRO
SGD0.188
Each (In a Pack of 100)
units
- - Insulated Nylon 5.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG M5 (#10) Red Copper -
RS Stock No. 838-8254
Mfr. Part No.1.25-5
BrandJST
SGD0.044
Each (In a Pack of 100)
units
R - Uninsulated - 5.3mm 8mm 1.65mm² 0.25mm² 16AWG 22AWG 5mm - - -
RS Stock No. 170-9397
Mfr. Part No.34148
SGD110.74
1 Box of 1000
Box(es)
PLASTI-GRIP - Insulated Vinyl 4.17mm 7.92mm 1.65mm² 0.26mm² 16AWG 22AWG M4 Red Copper Tin
RS Stock No. 170-9433
Mfr. Part No.320563
SGD297.15
1 Box of 1000
Box(es)
PIDG - Insulated Nylon 6.35mm 11.9mm 2.6mm² 1mm² 14AWG 16AWG M6 Blue Copper Tin
RS Stock No. 161-7852
Mfr. Part No.1.25-5
BrandJST
SGD42.36
1 Box of 1000
Box(es)
R - Uninsulated - 5.3mm 8mm 1.65mm² 0.25mm² 16AWG 22AWG 5mm - - -
RS Stock No. 136-1664
Mfr. Part No.322334
SGD1,173.00
1 Box of 1000
Box(es)
STRATO-THERM - Uninsulated - 4.34mm 8.71mm 2.6mm² 1mm² 14AWG 16AWG M4 - Nickel -
RS Stock No. 613-9659
BrandRS PRO
SGD0.281
Each (In a Pack of 100)
units
- - Insulated Vinyl 5.3mm 9.5mm 6mm² 4mm² 10AWG 12AWG M5 Yellow Copper Tin
RS Stock No. 170-9399
Mfr. Part No.34160
SGD113.85
1 Box of 1000
Box(es)
PLASTI-GRIP - Insulated Vinyl 4.34mm 8.71mm 2.6mm² 1mm² 14AWG 16AWG M4 Blue Copper Tin
RS Stock No. 161-9334
Mfr. Part No.19323-0005
BrandMolex
SGD352.80
1 Bag of 1000
Bag(s)
VersaKrimp - Uninsulated - 5.39mm 11.86mm 1mm² 0.5mm² - - M5 (#10) - Copper Alloy Tin
RS Stock No. 457-5176
Mfr. Part No.320563
SGD0.615
Each (In a Pack of 100)
units
PIDG - Insulated Nylon 6.35mm 11.9mm 2.6mm² 1mm² 14AWG 16AWG M6 Blue Copper Tin
RS Stock No. 161-1241
Mfr. Part No.322334
SGD1.50
Each (In a Pack of 10)
units
STRATO-THERM - Uninsulated - 4.34mm 8.71mm 2.6mm² 1mm² 14AWG 16AWG M4 - Nickel -
RS Stock No. 841-968
Mfr. Part No.34148
SGD0.205
Each (In a Pack of 100)
units
PLASTI-GRIP - Insulated Vinyl 4.17mm 7.92mm 1.65mm² 0.26mm² 16AWG 22AWG M4 Red Copper Tin
RS Stock No. 267-3874
BrandRS PRO
SGD0.558
Each (In a Pack of 100)
units
- - Insulated Nylon 8.4mm 15mm 6mm² 4mm² 10AWG 12AWG M8 (5/16) Yellow Copper -
RS Stock No. 838-8333
Mfr. Part No.14-20
BrandJST
SGD2.141
Each (In a Pack of 10)
units
R - Uninsulated - 21mm 31.6mm 16.78mm² 10.5mm² 6AWG 6AWG 20mm - - -
RS Stock No. 190-3502
Mfr. Part No.N1.25-4A
BrandJST
SGD0.158
Each (In a Pack of 500)
units
R - Insulated Nylon 4.3mm 8mm 1.65mm² 0.25mm² 16AWG 22AWG 4mm Red - -
RS Stock No. 613-9328
BrandRS PRO
SGD0.228
Each (In a Pack of 100)
units
- - Insulated Vinyl 6.4mm 12mm 2.5mm² 1.5mm² 14AWG 16AWG M6 Blue Copper Tin