Screw Terminals

A screw terminal is an electrical connector made from plated brass that enables wires to be connected directly to a PCB and consists of a metal frame and a screw. The screw terminal is secured to the PCB using mounting legs which are snapped into holes on the PCB and soldered into place. Pre-stripped wire is wrapped under the head of the screw and the screw is tightened down using a screwdriver making a secure electrical connection between the wire and the metal frame. Wires that are terminated with connectors such as spade or ring terminals are pushed into place over the screw. Screw terminals are available with a right angle or vertical mounting body orientation, different body platings and to suit a wide range of current ratings
Some screw terminals feature colour coded screws for ease of identification and to aid trouble shooting.


Benefits of Screw Terminals


• Simple to use and easy to snap into place. Only basic hand tools required
• Allow high density wire connections to PCB
• Low cost, eliminate the need for a mating connector
• When properly tightened provide an electrically secure connection
• Can be reused in the field allowing for the replacement of wires or equipment
• Can be used with solid, stranded and pre-terminated wire
• Kinked leg versions for extra retention on the PCB


Where are screw terminals used?


PCB screw terminals allow electrical signals and current to flow to and from PCBs and electrical equipment.


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Description Price Orientation Wire Size Current Rating Minimum Wire Size AWG Snap-In Maximum Wire Size AWG Number of Legs Body Material Body Plating Colour Maximum Wire Size Minimum Wire Size
RS Stock No. 163-1873
Mfr. Part No.7461107
SGD20.896
Each (In a Box of 75)
units
Right Angle - 240A - - - 10 - Tin - - -
RS Stock No. 162-2259
Mfr. Part No.7462095
SGD9.84
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 162-1292
Mfr. Part No.7460553
SGD5.54
Each (In a Box of 100)
units
Vertical - 240A - - - 10 - Tin - - -
RS Stock No. 142-4029
Mfr. Part No.74650074R
SGD6.69
Each
units
Vertical - 50A - - - 4 Brass Tin - - -
RS Stock No. 177-0051
Mfr. Part No.74651173R
SGD5.52
Each
units
Vertical - 50A - - - 4 Brass Tin - - -
RS Stock No. 178-8752
BrandRS PRO
SGD0.049
Each (In a Bag of 100)
units
Straight 3 x 20 → 3 x 16 AWG - 3 x 20AWG - 3 x 16AWG - Thermoplastic - Blue - -
RS Stock No. 122-4985
Mfr. Part No.7461114
SGD14.76
Each
units
Right Angle - 250A - - - 25 - Tin - - -
RS Stock No. 917-5330
Mfr. Part No.225682
BrandERNI
SGD5.818
Each (In a Pack of 5)
units
Vertical - 160A - - - 16 - Tin - - -
RS Stock No. 481-3973
Mfr. Part No.8191-2
BrandKeystone
SGD0.83
Each (In a Pack of 10)
units
Straight 22 → 14 AWG 15A - - - 4 Brass Nickel Red 14AWG 22AWG
RS Stock No. 917-5342
Mfr. Part No.225684
BrandERNI
SGD12.392
Each (In a Pack of 5)
units
Vertical - 160A - - - 16 - Tin - - -
RS Stock No. 142-4113
Mfr. Part No.74650195R
SGD8.01
Each
units
Vertical - 85A - - - 9 Brass Tin - - -
RS Stock No. 162-1753
Mfr. Part No.7461059
SGD8.967
Each (In a Box of 100)
units
Straight - 240A - - - - Brass Tin - - -
RS Stock No. 717-6599
Mfr. Part No.55556-4
SGD12.30
Each
units
Straight - 25A - - - - Nylon - - - -
RS Stock No. 122-5143
Mfr. Part No.7466203R
SGD4.10
Each
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 162-1758
Mfr. Part No.7461082
SGD3.60
Each (In a Box of 500)
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 122-4988
Mfr. Part No.7460719
SGD10.24
Each
units
Vertical - 250A - - - 25 - Tin - - -
RS Stock No. 481-3917
Mfr. Part No.8190-3
BrandKeystone
SGD0.992
Each (In a Pack of 10)
units
Right Angle 22 → 14 AWG 15A - - - 4 Brass Nickel Black 14AWG 22AWG
RS Stock No. 162-2151
Mfr. Part No.7462810
SGD8.64
Each
units
Straight - 70A - - - - Brass Tin - - -
RS Stock No. 122-4955
Mfr. Part No.7461058
SGD20.85
Each
units
Vertical - 320A - - - 12 - Tin - - -
RS Stock No. 177-0007
Mfr. Part No.74655095R
SGD7.40
Each
units
Vertical - 85A - - - 8 Brass Tin - - -