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 Minimum Wire Size mm² Outer Ring Diameter Maximum Wire Size mm² Maximum Wire Size AWG Minimum Wire Size AWG Shrouded/Unshrouded Stud Size Colour Contact Material
RS Stock No. 534-216
BrandRS PRO
kr 1,058
Each (In a Pack of 100)
Units
- - Insulated PVC 4.16mm 0.5mm² 6mm 1.5mm² 16AWG 22AWG - M4 Red Copper
RS Stock No. 534-216A
BrandRS PRO
kr 641,74
1 Pack of 1000
Pack(s)
- - Insulated PVC 4.16mm 0.5mm² 8mm 1.5mm² 16AWG 22AWG - M4 Red Copper
RS Stock No. 531-015
BrandRS PRO
kr 3,42
Each (In a Pack of 25)
Units
- - Uninsulated - 5.3mm - - 10mm² - - - M5 - Copper
RS Stock No. 534-430
BrandRS PRO
kr 3,50
Each (In a Pack of 100)
Units
- - Insulated PVC 6.35mm 2.5mm² 11mm 6mm² 10AWG 12AWG - M6 Yellow Copper
RS Stock No. 241-4631
BrandRS PRO
kr 10,048
Each (In a Pack of 10)
Units
- - Uninsulated - 8mm - - 35mm² - - - M8 - Copper
RS Stock No. 534-200
BrandRS PRO
kr 1,071
Each (In a Pack of 100)
Units
- - Insulated PVC 5.3mm 0.5mm² 8mm 1.5mm² 16AWG 22AWG - M5 Red Copper
RS Stock No. 534-200A
BrandRS PRO
kr 623,58
1 Pack of 1000
Pack(s)
- - Insulated PVC 5.3mm 0.5mm² 8mm 1.5mm² 16AWG 22AWG - M5 Red Copper
RS Stock No. 534-575
BrandRS PRO
kr 1,981
Each (In a Pack of 100)
Units
- - Insulated PVC 5.3mm 1.5mm² 9.5mm 2.5mm² 14AWG 16AWG - M5 Blue Copper
RS Stock No. 534-575A
BrandRS PRO
kr 661,85
1 Pack of 1000
Pack(s)
- - Insulated PVC 5.3mm 1.5mm² 9.5mm 2.5mm² 14AWG 16AWG - M5 Blue Copper
RS Stock No. 534-238
BrandRS PRO
kr 0,908
Each (In a Pack of 100)
Units
- - Insulated PVC 3.2mm 0.5mm² 5.5mm 1.5mm² 16AWG 22AWG - M3 Red Copper
RS Stock No. 208-2565
BrandRS PRO
kr 0,917
Each (In a Pack of 100)
Units
- - Uninsulated - 4.3mm 0.5mm² 8mm 1.5mm² 16AWG 22AWG - M4 - Copper
RS Stock No. 534-238A
BrandRS PRO
kr 624,24
1 Pack of 1000
Pack(s)
- - Insulated PVC 3.2mm 0.5mm² 5.5mm 1.5mm² 16AWG 22AWG - M3 Red Copper
RS Stock No. 433-034A
BrandRS PRO
kr 715,99
1 Pack of 1000
Pack(s)
- - Uninsulated - 3.2mm 0.5mm² 5.5mm 1.5mm² 16AWG 22AWG - M3 - Copper
RS Stock No. 433-034
BrandRS PRO
kr 1,351
Each (In a Pack of 100)
Units
- - Uninsulated - 3.2mm 0.5mm² 5.5mm 1.5mm² 16AWG 22AWG - M3 - Copper
RS Stock No. 841-7623
BrandRS PRO
kr 4,788
Each (In a Pack of 50)
Units
- - Uninsulated - 8.3mm 25mm² 13mm 25mm² - - - 8mm - Copper
RS Stock No. 534-468
BrandRS PRO
kr 1,471
Each (In a Pack of 100)
Units
- - Insulated PVC 3.7mm 2.5mm² 9.1mm 6mm² 10AWG 12AWG - M3.5 Yellow Copper
RS Stock No. 531-914
BrandRS PRO
kr 17,801
Each (In a Pack of 10)
Units
- - Uninsulated - 10.4mm - - 70mm² - - - M10 - Copper
RS Stock No. 534-193
BrandRS PRO
kr 2,142
Each (In a Pack of 100)
Units
- - Insulated PVC 6.35mm 0.5mm² 11mm 1.5mm² 16AWG 22AWG - M6 Red Copper
RS Stock No. 208-2622
BrandRS PRO
kr 0,846
Each (In a Pack of 100)
Units
- - Uninsulated - 4.3mm 1.5mm² 8mm 2.5mm² 14AWG 16AWG - M4 - Copper
RS Stock No. 267-3638
BrandRS PRO
kr 1,718
Each (In a Pack of 100)
Units
- - Insulated Nylon 4.3mm 0.5mm² 6.6mm 1.5mm² 16AWG 22AWG - M4 (#8) Red Copper