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. 531-914
BrandRS PRO
SGD3.41
Each (In a Pack of 10)
units
- - Uninsulated - 10.4mm - 70mm² - - - M10 - Copper Tin
RS Stock No. 602-7512
Mfr. Part No.1.25-M4
BrandJST
SGD8.18
1 Bag of 100
Bag(s)
- - Uninsulated - - - 1.65mm² 0.25mm² 16AWG 22AWG 4mm - - -
RS Stock No. 841-974
Mfr. Part No.34142
SGD0.292
Each (In a Pack of 100)
units
PLASTI-GRIP - Insulated Vinyl 3.68mm 5.54mm 1.65mm² 0.26mm² 16AWG 22AWG M3.5 Red Copper Tin
RS Stock No. 241-4675
BrandRS PRO
SGD3.098
Each (In a Pack of 4)
units
CT - Uninsulated - 12.7mm - 120mm² 120mm² - - M12 - Copper Tin
RS Stock No. 225-0106
Mfr. Part No.323746
SGD5.717
Each (In a Pack of 10)
units
STRATO-THERM - - - 8.33mm 13.49mm 6.6mm² 2.6mm² 10AWG 12AWG M8 - Nickel -
RS Stock No. 164-8621
Mfr. Part No.33458
SGD0.231
Each (In a Box of 500)
units
SOLISTRAND - Uninsulated - 6.73mm 13.49mm 6.6mm² 2.6mm² 10AWG 12AWG M6 - Copper Tin
RS Stock No. 398-1946
Mfr. Part No.3R8
BrandKlauke
SGD1.378
Each (In a Bag of 10)
units
- - Uninsulated - - - 16mm² 16mm² - - M8 - Copper Tin
RS Stock No. 437-3813
Mfr. Part No.33458
SGD0.297
Each (In a Pack of 100)
units
SOLISTRAND - Uninsulated - 6.73mm 13.49mm 6.6mm² 2.6mm² 10AWG 12AWG M6 - Copper Tin
RS Stock No. 164-8645
Mfr. Part No.36809
SGD2.237
Each (In a Box of 100)
units
SOLISTRAND - Uninsulated - 16.66mm 31.75mm 16.8mm² 10.5mm² 6AWG 6AWG M16 - Copper Tin
RS Stock No. 267-3739
BrandRS PRO
SGD0.281
Each (In a Pack of 100)
units
- - Insulated Nylon 6.4mm 12mm 2.5mm² 1.5mm² 14AWG 16AWG M6 (1/4) Blue Copper -
RS Stock No. 224-9730
Mfr. Part No.36809
SGD2.614
Each (In a Pack of 25)
units
SOLISTRAND - Uninsulated - 16.66mm 31.75mm 16.8mm² 10.5mm² 6AWG 6AWG M16 - Copper Tin
RS Stock No. 613-9362
BrandRS PRO
SGD0.289
Each (In a Pack of 100)
units
- - Insulated Vinyl 8.4mm 12mm 2.5mm² 1.5mm² 14AWG 16AWG M8 Blue Copper Tin
RS Stock No. 161-6190
Mfr. Part No.33470
SGD0.907
Each (In a Box of 100)
units
SOLISTRAND - Uninsulated - 8.33mm 16.66mm 26.7mm² 16.8mm² 4AWG 4AWG M8 - Copper Tin
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. 373-421
Mfr. Part No.33470
SGD1.076
Each (In a Pack of 25)
units
SOLISTRAND - Uninsulated - 8.33mm 16.66mm 26.7mm² 16.8mm² 4AWG 4AWG M8 - Copper Tin
RS Stock No. 613-9227
BrandRS PRO
SGD0.225
Each (In a Pack of 100)
units
- - Insulated Vinyl 3.2mm 5.5mm 1.5mm² 0.5mm² 16AWG 22AWG M3 Red Copper Tin
RS Stock No. 398-1902
Mfr. Part No.3R6
BrandKlauke
SGD1.774
Each (In a Bag of 10)
units
- - Uninsulated - - - 16mm² 16mm² - - M6 - Copper Tin
RS Stock No. 311-9983
Mfr. Part No.710979-1
SGD2.348
Each (In a Box of 50)
units
XCT - Uninsulated - - - 4mm² 4mm² 11AWG 11AWG M6 - Copper Tin
RS Stock No. 161-1229
Mfr. Part No.323062
SGD1.084
Each (In a Pack of 10)
units
STRATO-THERM - Uninsulated - 5mm 9.53mm 6.6mm² 2.6mm² 10AWG 12AWG M5 - Copper Nickel
RS Stock No. 531-891
BrandRS PRO
SGD1.991
Each (In a Pack of 10)
units
- - Uninsulated - 10.4mm - 50mm² - - - M10 - Copper Tin