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 Stud Size Colour Contact Material Contact Plating
RS Stock No. 178-8654
BrandRS PRO
HK$0.625
Each (In a Bag of 100)
units
- - Insulated Vinyl 6.4mm 11.6mm 1.5mm² 0.5mm² 16AWG 22AWG 6.4mm Red Copper -
RS Stock No. 718-7435
Mfr. Part No.323152
HK$11.38
Each
units
DG STRATO-THERM - Insulated - - - 1.65mm² 0.26mm² 16AWG 22AWG M4 - Copper Nickel
RS Stock No. 164-4755
Mfr. Part No.321056
HK$37.73
Each (In a Box of 100)
units
Budget - Uninsulated - 8.33mm 15.88mm 16.8mm² 10.5mm² 6AWG 6AWG M8 (5/16) - Copper Tin
RS Stock No. 795-6307
Mfr. Part No.2-327960-1
HK$7.71
Each
units
PIDG - Insulated Nylon 3.68mm 6.02mm 6.6mm² 2.6mm² 10AWG 12AWG M3.5 Yellow Copper Tin
RS Stock No. 602-7512
Mfr. Part No.1.25-M4
BrandJST
HK$42.21
1 Bag of 100
Bag(s)
- - Uninsulated - - - 1.65mm² 0.25mm² 16AWG 22AWG 4mm - - -
RS Stock No. 795-2107
Mfr. Part No.321056
HK$47.14
Each
units
Budget - Uninsulated - 8.33mm 15.88mm 16.8mm² 10.5mm² 6AWG 6AWG M8 (5/16) - Copper Tin
RS Stock No. 163-9995
Mfr. Part No.342103-1
HK$1,030.00
1 Box of 1000
Box(es)
PLASTI-GRIP - Insulated Vinyl 4mm 7.9mm 1.3mm² 0.3mm² 16AWG 22AWG M4 Red Copper Tin
RS Stock No. 178-8596
BrandRS PRO
HK$0.634
Each (In a Bag of 100)
units
- - Uninsulated - 6.4mm 11.6mm 1.5mm² 0.5mm² 16AWG 22AWG 6.4mm - Copper Tin
New
RS Stock No. 190-3757
Mfr. Part No.2-320552-1
HK$26,797.21
1 Pack of 15000
Pack(s)
PIDG - Insulated Nylon 5mm 7.14mm 1.65mm² 0.26mm² 16AWG 22AWG M5 Red Copper Tin
RS Stock No. 847-8852
Mfr. Part No.LAM2A1/0-14-6Y
BrandPanduit
HK$58.28
Each
units
LAM - Uninsulated - 10.7mm 28.6mm - - 1/0AWG 14AWG 1/4in Silver Aluminium Tin
RS Stock No. 613-9659
BrandRS PRO
HK$1.241
Each (In a Pack of 100)
units
- - Insulated Vinyl 5.3mm 9.5mm 6mm² 4mm² 10AWG 12AWG M5 Yellow Copper Tin
RS Stock No. 719-6136
Mfr. Part No.171508-1
HK$3.646
Each (In a Pack of 50)
units
PIDG - Insulated - 3.68mm 7.1mm 1mm² 0.26mm² 18AWG 22AWG M3.5 Red Copper Tin
RS Stock No. 161-1538
Mfr. Part No.35108
HK$2.66
Each (In a Box of 100)
units
PIDG - Insulated Nylon 4.34mm 9.52mm 6.6mm² 2.6mm² 10AWG 12AWG M4 Yellow Copper Tin
RS Stock No. 731-3170
Mfr. Part No.323990
HK$3.396
Each (In a Pack of 10)
units
PIDG - Insulated Nylon - - 0.5mm² 0.2mm² 20AWG 24AWG M5 Natural Copper Tin
RS Stock No. 838-8333
Mfr. Part No.14-20
BrandJST
HK$9.217
Each (In a Pack of 10)
units
R - Uninsulated - 21mm 31.6mm 16.78mm² 10.5mm² 6AWG 6AWG 20mm - - -
RS Stock No. 166-7417
Mfr. Part No.LRB-2.5T-M6
BrandJST
HK$0.841
Each (In a Bag of 500)
units
LRB - Uninsulated - 6.5mm 9.5mm 2.5mm² 1mm² 14AWG 18AWG M6 - Brass Tin
RS Stock No. 850-5342
Mfr. Part No.PN10-56R-L
BrandPanduit
HK$530.50
1 Bag of 50
Bag(s)
PN PN10 Insulated Nylon 0.38in 0.52in - - 10AWG 12AWG 5/16in Yellow - Tin
RS Stock No. 680-5482
Mfr. Part No.130167
HK$2.56
Each (In a Pack of 50)
units
PIDG - Insulated Nylon 0.207in 0.375in 6.6mm² 2.6mm² 10AWG 12AWG M5 Yellow Copper Tin
RS Stock No. 166-7545
Mfr. Part No.FVWS1.25-5(LF)
BrandJST
HK$515.60
1 Box of 1000
Box(es)
FV - Insulated Vinyl 4.3mm 8mm 1.65mm² 0.25mm² 16AWG 22AWG M5 (#10) Red - -
RS Stock No. 164-4754
Mfr. Part No.321051
HK$25.579
Each (In a Box of 100)
units
Budget - Uninsulated - 5mm 12.7mm 10.5mm² 6.6mm² 8AWG 8AWG M5 (#10) - Copper Tin