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. 822-1227
Mfr. Part No.19073-0027
BrandMolex
PHP21.56
Each (In a Pack of 100)
units
800 19073 Insulated Nylon 8.33mm 11.9mm 0.8mm² 0.35mm² 18AWG 22AWG M8 (5/16) Red Copper Tin
RS Stock No. 167-6420
Mfr. Part No.19323-0004
BrandMolex
PHP8,870.57
1 Bag of 1000
Bag(s)
VersaKrimp - Uninsulated - 4.39mm 7.92mm 1mm² 0.5mm² - - M4 (#8) - Copper Alloy Tin
RS Stock No. 161-9387
Mfr. Part No.19323-0015
BrandMolex
PHP22.80
Each (In a Bag of 500)
units
VersaKrimp - Uninsulated - 8.51mm 13.46mm 6mm² 2.5mm² - - M8 (5/16) - Copper Alloy Tin
RS Stock No. 822-1476
Mfr. Part No.19221-0238
BrandMolex
PHP125.83
Each
units
- 0238 Uninsulated - 10.16mm 16.66mm 50mm² 50mm² 1AWG 1AWG M9 (3/8) - Copper Tin
RS Stock No. 822-1472
Mfr. Part No.19221-0235
BrandMolex
PHP94.04
Each
units
- 0235 Uninsulated - 10.16mm 15.88mm 35mm² 35mm² 2AWG 2AWG M9 (3/8) - Copper Tin
RS Stock No. 790-6952
Mfr. Part No.19323-0004
BrandMolex
PHP9.758
Each (In a Pack of 50)
units
VersaKrimp - Uninsulated - 4.39mm 7.92mm 1mm² 0.5mm² - - M4 (#8) - Copper Alloy Tin
RS Stock No. 790-6992
Mfr. Part No.19323-0015
BrandMolex
PHP27.265
Each (In a Pack of 50)
units
VersaKrimp - Uninsulated - 8.51mm 13.46mm 6mm² 2.5mm² - - M8 (5/16) - Copper Alloy Tin
RS Stock No. 790-6905
Mfr. Part No.19324-0003
BrandMolex
PHP23.52
Each (In a Pack of 50)
units
Avikrimp - Insulated Polyamide 3.79mm 6.45mm 1mm² 0.5mm² - - M3 to M3.5 (#5 to #6) - Copper Alloy Tin
RS Stock No. 822-1488
Mfr. Part No.19221-0243
BrandMolex
PHP170.23
Each
units
- 0243 Uninsulated - 8.64mm 20.93mm - - 2/0AWG 2/0AWG M8 (5/16) - Copper Tin
RS Stock No. 822-1429
Mfr. Part No.19193-0245
BrandMolex
PHP26.57
Each (In a Pack of 50)
units
- 0245 Uninsulated - 5.03mm 12.32mm 16mm² 16mm² 6AWG 6AWG M5 (#10) - Copper Tin
RS Stock No. 822-1340
Mfr. Part No.19164-0003
BrandMolex
PHP33.15
Each (In a Pack of 50)
units
- 0003 Insulated NiAc 5.03mm 8.1mm 0.96mm² 0.38mm² 18AWG 22AWG M5 (#10) Red Copper Alloy Tin
RS Stock No. 161-9378
Mfr. Part No.19324-0003
BrandMolex
PHP14,700.00
1 Bag of 1000
Bag(s)
Avikrimp - Insulated Polyamide 3.79mm 6.45mm 1mm² 0.5mm² - - M3 to M3.5 (#5 to #6) - Copper Alloy Tin
RS Stock No. 822-1151
Mfr. Part No.19054-0119
BrandMolex
PHP8.008
Each (In a Pack of 100)
units
200 19054 Insulated PVC 5.03mm 8.69mm 2.5mm² 1mm² 14AWG 16AWG 5.03mm Blue Copper Tin
RS Stock No. 822-1218
Mfr. Part No.19073-0017
BrandMolex
PHP15.019
Each (In a Pack of 100)
units
800 19073 Insulated Nylon 5.03mm 7.9mm 0.8mm² 0.35mm² 18AWG 22AWG M5 (#10) Red Copper Tin
RS Stock No. 822-1448
Mfr. Part No.19203-0388
BrandMolex
PHP4.18
Each (In a Pack of 100)
units
- 0388 Uninsulated - 5.38mm 9.76mm 2.5mm² 1mm² 14AWG 16AWG #10 - Steel Nickel
RS Stock No. 167-6416
Mfr. Part No.19324-0008
BrandMolex
PHP15,582.00
1 Bag of 1000
Bag(s)
Avikrimp - Insulated Polyamide 4.39mm 7.92mm 2.5mm² 1mm² - - M4 (#8) - Copper Alloy Tin
RS Stock No. 790-6958
Mfr. Part No.19323-0003
BrandMolex
PHP21.565
Each (In a Pack of 50)
units
VersaKrimp - Uninsulated - 3.79mm 6.45mm 1mm² 0.5mm² - - M3 to M3.5 (#5 to #6) - Copper Alloy Tin
RS Stock No. 190-3207
Mfr. Part No.19324-0010
BrandMolex
PHP17,600.00
1 Pack of 1000
Pack(s)
Avikrimp - Insulated Polyamide 6.61mm 11.86mm 2.5mm² 1mm² - - M6 (1/4) - Copper Alloy Tin
RS Stock No. 790-6927
Mfr. Part No.19324-0009
BrandMolex
PHP24.99
Each (In a Pack of 50)
units
Avikrimp - Insulated Polyamide 5.39mm 8.69mm 2.5mm² 1mm² - - M5 - Copper Alloy Tin
RS Stock No. 790-6914
Mfr. Part No.19324-0007
BrandMolex
PHP23.00
Each (In a Pack of 50)
units
Avikrimp - Insulated Polyamide 3.79mm 6.35mm 2.5mm² 1mm² - - M3 to M3.5 (#5 to #6) - Copper Alloy Tin