Crimp Ring Terminals

A crimp 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.
Why do you need it / applications?
Electrical panels
Terminal blocks
Wiring harnesses
Types
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 mm² -
• Yellow 2.5 mm² to 6 mm²
• Blue 1.5 mm² to 2.5 mm²
Other colours by different manufactures are now 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 Shrouded/Unshrouded Stud Size Colour Contact Material
RS Stock No. 166-7549
Mfr. Part No.FVDWS2-4
BrandJST
$219.90
1 Box of 1000
Box(es)
R - Insulated Vinyl 4.3mm 8.5mm 2.6mm² 1mm² 14AWG 16AWG - 4mm Blue Copper
RS Stock No. 838-8207
Mfr. Part No.FVDWS2-4
BrandJST
$0.352
Each (In a Pack of 100)
units
R - Insulated Vinyl 4.3mm 8.5mm 2.6mm² 1mm² 14AWG 16AWG - 4mm Blue Copper
RS Stock No. 604-8070
Mfr. Part No.0.5-3
BrandJST
$9.50
1 Bag of 100
Bag(s)
- - Uninsulated - - - 0.5mm² 0.2mm² 22AWG 26AWG - 3mm - -
RS Stock No. 166-7551
Mfr. Part No.FVWS5.5-12(LF)
BrandJST
$0.903
Each (In a Box of 250)
units
FV - Insulated Vinyl 13mm 19.2mm 6.6mm² 2.6mm² 10AWG 12AWG - M12 (1/2) Yellow -
RS Stock No. 688-1287
Mfr. Part No.FVWS5.5-12(LF)
BrandJST
$1.05
Each (In a Pack of 100)
units
FV - Insulated Vinyl 13mm 19.2mm 6.6mm² 2.6mm² 10AWG 12AWG - M12 (1/2) Yellow -
RS Stock No. 688-1240
Mfr. Part No.FVWS2-6
BrandJST
$0.194
Each (In a Pack of 100)
units
FV - Insulated Vinyl - - 2.6mm² 1mm² 14AWG 16AWG - 6mm Blue -
RS Stock No. 166-7476
Mfr. Part No.FVWS2-6
BrandJST
$160.34
1 Box of 1000
Box(es)
FV - Insulated Vinyl - - 2.6mm² 1mm² 14AWG 16AWG - 6mm Blue -
RS Stock No. 166-7458
Mfr. Part No.FVWS1.25-3(LF)
BrandJST
$93.35
1 Box of 1000
Box(es)
FV - Insulated Vinyl 3.2mm 5.5mm 1.65mm² 0.25mm² 16AWG 22AWG - M3 (#3 to #4) Red -
RS Stock No. 166-7550
Mfr. Part No.2-5
BrandJST
$80.16
1 Box of 1000
Box(es)
R - Uninsulated - 5.3mm 9.5mm 2.6mm² 1mm² 14AWG 16AWG - 5mm - -
RS Stock No. 161-7861
Mfr. Part No.2-S3
BrandJST
$39.80
1 Box of 1000
Box(es)
R - Uninsulated - 3.7mm 6.4mm 2.6mm² 1mm² 14AWG 16AWG - 3.5mm - -
RS Stock No. 838-8291
Mfr. Part No.2-S3
BrandJST
$0.117
Each (In a Pack of 100)
units
R - Uninsulated - 3.7mm 6.4mm 2.6mm² 1mm² 14AWG 16AWG - 3.5mm - -
RS Stock No. 838-8279
Mfr. Part No.2-5
BrandJST
$0.101
Each (In a Pack of 100)
units
R - Uninsulated - 5.3mm 9.5mm 2.6mm² 1mm² 14AWG 16AWG - 5mm - -
RS Stock No. 688-1173
Mfr. Part No.FVWS1.25-3(LF)
BrandJST
$0.213
Each (In a Pack of 100)
units
FV - Insulated Vinyl 3.2mm 5.5mm 1.65mm² 0.25mm² 16AWG 22AWG - M3 (#3 → #4) Red -
RS Stock No. 688-1410
Mfr. Part No.LRB-1.0T-M3
BrandJST
$0.257
Each (In a Pack of 100)
units
LRB - Uninsulated - 3.2mm 8mm 1mm² 0.5mm² 18AWG 20AWG - M3 - Brass
RS Stock No. 604-8424
Mfr. Part No.R8-5
BrandJST
$20.77
1 Bag of 100
Bag(s)
- - Uninsulated - - - 10.5mm² 6.6mm² 8AWG 8AWG - 5mm - -
RS Stock No. 166-7495
Mfr. Part No.LRB-1.0T-M3
BrandJST
$180.60
1 Bag of 1000
Bag(s)
LRB - Uninsulated - 3.2mm 8mm 1mm² 0.5mm² 18AWG 20AWG - M3 - Brass
RS Stock No. 166-7475
Mfr. Part No.FVWS2-10
BrandJST
$376.50
1 Box of 1000
Box(es)
FV - Insulated Vinyl - - 2.6mm² 1mm² 14AWG 16AWG - 10mm Blue -
RS Stock No. 688-1189
Mfr. Part No.FVWS1.25-6(LF)
BrandJST
$0.285
Each (In a Pack of 100)
units
FV - Insulated Vinyl 6.4mm 11.6mm 1.65mm² 0.25mm² 16AWG 22AWG - M6 (1/4) Red -
RS Stock No. 604-8266
Mfr. Part No.8-12
BrandJST
$50.00
1 Bag of 100
Bag(s)
- - Uninsulated - - - 10.5mm² 6.6mm² 8AWG 8AWG - 12mm - -
RS Stock No. 688-1432
Mfr. Part No.LRB-2.5T-M6
BrandJST
$0.30
Each (In a Pack of 100)
units
LRB - Uninsulated - 6.5mm 9.5mm 2.5mm² 1mm² 14AWG 18AWG - M6 - Brass