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. 170-9431
Mfr. Part No.320551
MYR821.42
1 Box of 1000
Box(es)
PIDG - Insulated Nylon 4.34mm 7.92mm 1.65mm² 0.26mm² 16AWG 22AWG M4 Red Copper Tin
RS Stock No. 457-5104
Mfr. Part No.320551
MYR0.961
Each (In a Pack of 100)
units
PIDG - Insulated Nylon 4.34mm 7.92mm 1.65mm² 0.26mm² 16AWG 22AWG M4 Red Copper Tin
RS Stock No. 534-216
BrandRS PRO
MYR0.375
Each (In a Pack of 100)
units
- - Insulated PVC 4.16mm 6mm 1.5mm² 0.5mm² 16AWG 22AWG M4 Red Copper Tin
RS Stock No. 604-8294
Mfr. Part No.R1.25-4
BrandJST
MYR25.35
1 Bag of 100
Bag(s)
- - Uninsulated - - - 1.65mm² 0.25mm² 16AWG 22AWG 4mm - - -
RS Stock No. 531-087
BrandRS PRO
MYR1.632
Each (In a Pack of 10)
units
- - Uninsulated - 10.4mm - 25mm² - - - M10 - Copper Tin
RS Stock No. 531-885
BrandRS PRO
MYR6.16
Each (In a Pack of 10)
units
- - Uninsulated - 10.4mm - 35mm² - - - M10 - Copper Tin
RS Stock No. 534-430
BrandRS PRO
MYR1.253
Each (In a Pack of 100)
units
- - Insulated PVC 6.35mm 11mm 6mm² 2.5mm² 10AWG 12AWG M6 Yellow Copper Tin
RS Stock No. 534-200
BrandRS PRO
MYR0.375
Each (In a Pack of 100)
units
- - Insulated PVC 5.3mm 8mm 1.5mm² 0.5mm² 16AWG 22AWG M5 Red Copper Tin
RS Stock No. 531-908
BrandRS PRO
MYR8.724
Each (In a Pack of 10)
units
- - Uninsulated - 12.8mm - 50mm² - - - M12 - Copper Tin
RS Stock No. 531-043
BrandRS PRO
MYR2.599
Each (In a Pack of 10)
units
- - Uninsulated - 6.4mm - 16mm² - - - M6 - Copper Tin
RS Stock No. 534-238
BrandRS PRO
MYR0.306
Each (In a Pack of 100)
units
- - Insulated PVC 3.2mm 5.5mm 1.5mm² 0.5mm² 16AWG 22AWG M3 Red Copper Tin
RS Stock No. 149-530
BrandRS PRO
MYR100.27
1 Reel of 500
Reel(s)
3130 - Insulated Vinyl 5.3mm 9.5mm 6mm² 4mm² 10AWG 12AWG M5 (#10) Yellow Copper Tin
RS Stock No. 534-581
BrandRS PRO
MYR0.483
Each (In a Pack of 100)
units
- - Insulated PVC 4.16mm 8mm 2.5mm² 1.5mm² 14AWG 16AWG M4 Blue Copper Tin
RS Stock No. 534-446
BrandRS PRO
MYR0.902
Each (In a Pack of 100)
units
- - Insulated PVC 5.3mm 9.5mm 6mm² 2.5mm² 10AWG 12AWG M5 Yellow Copper Tin
RS Stock No. 795-1671
Mfr. Part No.32883
MYR1.995
Each (In a Pack of 50)
units
PIDG - Insulated Nylon 5mm 8.71mm 6mm² 3mm² 10AWG 12AWG M5 (#10) Yellow Copper Tin
RS Stock No. 457-5233
Mfr. Part No.160138
MYR3.993
Each (In a Pack of 100)
units
PIDG - Insulated Nylon 10.31mm 19.05mm 6.6mm² 2.6mm² 10AWG 12AWG M10 Yellow Copper Tin
RS Stock No. 534-424
BrandRS PRO
MYR1.047
Each (In a Pack of 100)
units
- - Insulated PVC 8.4mm 14mm 6mm² 2.5mm² 10AWG 12AWG M8 Yellow Copper Tin
RS Stock No. 190-3740
Mfr. Part No.32883
MYR6,905.37
1 Pack of 5000
Pack(s)
PIDG - Insulated Nylon 5mm 8.71mm 6mm² 3mm² 10AWG 12AWG M5 (#10) Yellow Copper Tin
RS Stock No. 135-5030
Mfr. Part No.160138
MYR3.904
Each (In a Box of 250)
units
PIDG - Insulated Nylon 10.31mm 19.05mm 6.6mm² 2.6mm² 10AWG 12AWG M10 Yellow Copper Tin
RS Stock No. 534-575
BrandRS PRO
MYR0.578
Each (In a Pack of 100)
units
- - Insulated PVC 5.3mm 9.5mm 2.5mm² 1.5mm² 14AWG 16AWG M5 Blue Copper Tin