Screw Terminals

What is a PCB Screw Terminal?
A PCB 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
• 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
Applications
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 Snap-In Number of Legs Body Material Body Plating Colour Maximum Wire Size Minimum Wire Size
RS Stock No. 119-4011
Mfr. Part No.8191
BrandKeystone
TWD14
Each (In a Bag of 10)
units
Straight 22 → 14 AWG 15A - 4 Brass Tin - 14AWG 22AWG
RS Stock No. 481-3917
Mfr. Part No.8190-3
BrandKeystone
TWD16
Each (In a Pack of 10)
units
Right Angle 22 → 14 AWG 15A - 4 Brass Nickel Black 14AWG 22AWG
RS Stock No. 409-6566
Mfr. Part No.7691
BrandKeystone
TWD17
Each (In a Bag of 10)
units
Straight - 15A - 4 Brass Nickel Natural - -
RS Stock No. 614-2425
Mfr. Part No.7689
BrandKeystone
TWD19
Each (In a Bag of 10)
units
Right Angle 22 → 14 AWG 15A Yes 4 Brass Tin Natural 14AWG 22AWG
RS Stock No. 409-1791
Mfr. Part No.8197
BrandKeystone
TWD20
Each (In a Bag of 10)
units
Straight - 30A - 4 Brass Nickel Natural - -
RS Stock No. 162-2214
Mfr. Part No.7461082
TWD129
Each
units
Straight - - - - Brass Tin - - -
RS Stock No. 162-1755
Mfr. Part No.7461073
TWD123,660
1 Box of 1000
Box(es)
Straight - - - - Brass Tin - - -
RS Stock No. 162-2168
Mfr. Part No.7461126
TWD137
Each
units
Straight - - - - Brass Tin - - -
RS Stock No. 162-2259
Mfr. Part No.7462095
TWD259
Each
units
Straight - - - - Brass Tin - - -
RS Stock No. 162-1753
Mfr. Part No.7461059
TWD307
Each (In a Box of 100)
units
Straight - 240A - - Brass Tin - - -
RS Stock No. 162-2095
Mfr. Part No.7462096
TWD152
Each
units
Straight - - - - Brass Tin - - -
RS Stock No. 162-1763
Mfr. Part No.7461122
TWD104,292
1 Box of 1000
Box(es)
Straight - - - - Brass Tin - - -
RS Stock No. 162-1760
Mfr. Part No.7461119
TWD209
Each (In a Box of 500)
units
Straight - - - - Brass Tin - - -
RS Stock No. 717-6599
Mfr. Part No.55556-4
TWD220
Each
units
Straight - 25A - - Nylon - - - -
RS Stock No. 164-0856
Mfr. Part No.55556-4
TWD88,727
1 Box of 1000
Box(es)
Straight - 25A - - Nylon - - - -
RS Stock No. 409-1909
Mfr. Part No.8189
BrandKeystone
TWD18
Each (In a Bag of 10)
units
45 deg - 15A - 4 Brass Nickel Natural - -
RS Stock No. 162-2097
Mfr. Part No.7461121
TWD259
Each
units
Straight - - - - Brass Tin - - -
RS Stock No. 162-2231
Mfr. Part No.7461118
TWD373
Each
units
Straight - - - - Brass Tin - - -
RS Stock No. 162-2246
Mfr. Part No.7461119
TWD320
Each
units
Straight - - - - Brass Tin - - -
RS Stock No. 409-6550
Mfr. Part No.7690
BrandKeystone
TWD22
Each (In a Bag of 10)
units
Right Angle - 15A - 4 Brass Nickel Natural - -