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. 161-4862
Mfr. Part No.326105
PHP689.092
Each (In a Box of 25)
units
AMPOWER - Uninsulated - 13.08mm 45.72mm 253mm² 253mm² - - M12 (1/2) - Copper Tin
RS Stock No. 825-1966
Mfr. Part No.325605
PHP846.55
Each
units
AMPOWER - Uninsulated - 13.08mm 30.23mm 125mm² 100mm² 4/0AWG 4/0AWG M12 (1/2) - Copper Tin
RS Stock No. 825-1978
Mfr. Part No.326105
PHP834.59
Each
units
AMPOWER - Uninsulated - 13.08mm 45.72mm 253mm² 253mm² - - M12 (1/2) - Copper Tin
RS Stock No. 164-2237
Mfr. Part No.325605
PHP685.424
Each (In a Box of 50)
units
AMPOWER - Uninsulated - 13.08mm 30.23mm 125mm² 100mm² 4/0AWG 4/0AWG M12 (1/2) - Copper Tin
RS Stock No. 841-968
Mfr. Part No.34148
PHP5.008
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. 164-1831
Mfr. Part No.152872
PHP60,592.05
1 Bag of 1000
Bag(s)
PIDG - Insulated Nylon 5mm 8.71mm 3.45mm² 1.65mm² 12AWG 14AWG M5 Red, White Copper Tin
RS Stock No. 710-5590
Mfr. Part No.152872
PHP116.572
Each (In a Pack of 5)
units
PIDG - Insulated Nylon 5mm 8.71mm 3.45mm² 1.65mm² 12AWG 14AWG M5 Red, White Copper Tin
RS Stock No. 170-9397
Mfr. Part No.34148
PHP3,790.50
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. 825-2300
Mfr. Part No.320677
PHP5.617
Each (In a Pack of 100)
units
Budget - Uninsulated - 2.36mm 4.62mm 1.65mm² 0.26mm² 16AWG 22AWG M2 (#2) - Copper Tin
RS Stock No. 680-5602
Mfr. Part No.165303
PHP16.657
Each (In a Pack of 100)
units
SOLISTRAND - Uninsulated - - - 6mm² 4mm² 10AWG 12AWG M6 - Copper Tin
RS Stock No. 162-1612
Mfr. Part No.165303
PHP14.93
Each (In a Bag of 500)
units
SOLISTRAND - Insulated - - - 6mm² 4mm² 10AWG 12AWG M6 - Copper Tin
RS Stock No. 161-5212
Mfr. Part No.320677
PHP4,854.50
1 Box of 1000
Box(es)
Budget - Uninsulated - 2.36mm 4.62mm 1.65mm² 0.26mm² 16AWG 22AWG M2 (#2) - Copper Tin
RS Stock No. 710-5593
Mfr. Part No.152883
PHP60.322
Each (In a Pack of 5)
units
PIDG - Insulated Nylon - - 1.65mm² 0.8mm² 16AWG 18AWG M4 Orange, Red Copper Tin
RS Stock No. 164-1833
Mfr. Part No.152883
PHP30,732.50
1 Box of 1000
Box(es)
PIDG - Insulated Nylon - - 1.65mm² 0.8mm² 16AWG 18AWG M4 Orange, Red Copper Tin
RS Stock No. 164-4789
Mfr. Part No.33115
PHP48.982
Each (In a Box of 100)
units
SOLISTRAND - Uninsulated - 8.33mm 15.88mm 26.7mm² 16.8mm² 4AWG 4AWG M8 (5/16) - Copper Tin
RS Stock No. 292-9925
Mfr. Part No.34119
PHP4.753
Each (In a Pack of 100)
units
SOLISTRAND - Uninsulated - 3.02mm 6.35mm 2.6mm² 1mm² 14AWG 16AWG 2.84mm - Copper Tin
RS Stock No. 170-9394
Mfr. Part No.33461
PHP11.381
Each (In a Box of 100)
units
SOLISTRAND - Uninsulated - 6.73mm 11.91mm 10.5mm² 6.6mm² 8AWG 8AWG M6 - Copper Tin
RS Stock No. 680-5918
Mfr. Part No.726343-1
PHP37.201
Each (In a Pack of 100)
units
SOLISTRAND - Uninsulated - - - 8.3mm² 8.3mm² 8AWG 8AWG M6 - Copper Tin
RS Stock No. 135-4691
Mfr. Part No.130191
PHP8,775.00
1 Bag of 1000
Bag(s)
SOLISTRAND - Uninsulated - 5.26mm 9.53mm 6.6mm² 2.6mm² 10AWG 12AWG M5 - Copper Tin
RS Stock No. 165-0679
Mfr. Part No.726343-1
PHP32.461
Each (In a Box of 750)
units
SOLISTRAND - Uninsulated - - - 8.3mm² 8.3mm² 8AWG 8AWG M6 - Copper Tin