About NEMA Straight-Blade Plugs, Connectors, and Receptacles
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About NEMA Plugs, Sockets, and Receptacles
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About Industry Designation for Cable Insulation
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About Extension Cords
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Welding Cable Connectors
Deliver power to welding cable. Plugs lock into sockets with a cam action that pulls the two pieces together tightly. The housing resists oil.
Use lug adapters (sold separately) to connect welding plugs to the stud of a power supply.
For technical drawings and 3-D models, click on a part number.
Current | Wire Connection Type | For Wire Gauge | For Cable OD | Housing Connection Type | OD | Lg. | Color | Temp. Range, °F | Each | |
| 250A | Screw Terminals | 4-1/0 | 0.2"-0.5" | Push In | 1.3" | 5.9" | Black | -50° to 350° | 0000000 | 000000 |
| 350A | Screw Terminals | 1/0-2/0 | 0.32"-0.56" | Push In | 1.4" | 5.9" | Black | -50° to 350° | 0000000 | 00000 |
| 500A | Screw Terminals | 3/0-4/0 | 0.41"-0.63" | Push In | 1.4" | 5.9" | Black | -50° to 350° | 0000000 | 00000 |
| Current | Wire Connection Type | For Wire Gauge | For Cable OD | Housing Connection Type | OD | Lg. | Color | Temp. Range, °F | Each | |
| 250A | Screw Terminals | 4-1/0 | 0.2"-0.5" | Push In | 1.3" | 4.9" | Black | -50° to 350° | 0000000 | 000000 |
| 350A | Screw Terminals | 1/0-2/0 | 0.32"-0.56" | Push In | 1.4" | 4.9" | Black | -50° to 350° | 0000000 | 00000 |
| 500A | Screw Terminals | 3/0-4/0 | 0.41"-0.63" | Push In | 1.4" | 4.9" | Black | -50° to 350° | 0000000 | 00000 |
Welding Cable Connector Sets
Each set includes one plug and one socket. Plugs lock into sockets with a cam action that pulls the two pieces together tightly. The housing resists oil.
For technical drawings and 3-D models, click on a part number.
Mated Housing | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Current | Wire Connection Type | For Wire Gauge | For Cable OD | Housing Connection Type | Dia. | Lg. | Color | Temp. Range, °F | Each | |
| 250A | Screw Terminals | 4-1/0 | 0.2"-0.5" | Push In | 1.3" | 9.7" | Black | -50° to 350° | 0000000 | 000000 |
| 350A | Screw Terminals | 1/0-2/0 | 0.32"-0.56" | Push In | 1.4" | 9.8" | Black | -50° to 350° | 0000000 | 00000 |
| 500A | Screw Terminals | 3/0-4/0 | 0.41"-0.63" | Push In | 1.4" | 9.8" | Black | -50° to 350° | 0000000 | 00000 |
Straight-Blade Plugs, Sockets, and Receptacles
90° elbow plugs with a rotating face can be plugged in at any angle.
Receptacles for outlet boxes fit standard wall plates (not included).
Note: The current rating of your plug should not exceed that of your socket or receptacle.
For technical drawings and 3-D models, click on a part number.
| NEMA Style | Voltage | Current | OD | Wire Connection Type | For Cable OD | Color | Each | |
Grounded | ||||||||
|---|---|---|---|---|---|---|---|---|
| 14-50 | 125V AC/250V AC | 50A | 3.1" | Screw Terminals | 0.43"-1.31" | Gray | 0000000 | 000000 |
| NEMA Style | Voltage | Current | OD | Wire Connection Type | For Cable OD | Features | Color | Each | |
Grounded | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 14-50 | 125V AC/250V AC | 50A | 3.3" | Screw Terminals | 0.63"-1.38" | Rotating Face | Black | 0000000 | 000000 |
| NEMA Style | Voltage | Current | Face Dia. | Wire Connection Type | Receptacle Terminal Location | Mounting Location | Color | Each | |
Grounded | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 14-50 | 125V AC/250V AC | 50A | 2.1" | Screw Terminals | Back | Outlet Box | Black | 0000000 | 000000 |
Premium Straight-Blade Plugs, Sockets, and Receptacles
Built to handle tough, repetitive-use applications, these are more durable than standard straight-blade connectors.
Receptacles for outlet boxes fit standard wall plates (not included).
Note: The current rating of your plug should not exceed that of your socket or receptacle.
For technical drawings and 3-D models, click on a part number.
| NEMA Style | Voltage | Current | OD | Wire Connection Type | For Cable OD | Environmental Rating | Specifications Met | Color | Each | |
Non-Grounded | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 10-50 | 125V AC/250V AC | 50A | 2.9" | Screw Terminals | 0.63"-1.22" | IP20 | UL Listed, CSA Certified, UL 94 HB | Black | 0000000 | 0000000 |
| NEMA Style | Voltage | Current | OD | Wire Connection Type | For Cable OD | Specifications Met | Color | Each | |
Grounded | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 6-50 | 250V AC | 50A | 2.7" | Screw Terminals | 0.63"-1.19" | UL Listed, CSA Certified, UL 498 | Black | 0000000 | 0000000 |
Non-Grounded | |||||||||
| 10-50 | 125V AC/250V AC | 50A | 2.7" | Screw Terminals | 0.63"-1.19" | UL Listed, CSA Certified, UL 498 | Black | 0000000 | 000000 |
| NEMA Style | Voltage | Current | OD | Wire Connection Type | For Cable OD | Environmental Rating | Specifications Met | Color | Each | |
Grounded | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 14-50 | 125V AC/250V AC | 50A | 2.9" | Screw Terminals | 0.63"-1.31" | IP20 | UL Listed, CSA Certified, UL 94 HB | Black | 0000000 | 0000000 |
| NEMA Style | Voltage | Current | OD | Wire Connection Type | For Cable OD | Specifications Met | Color | Each | |
Grounded | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 14-50 | 125V AC/250V AC | 50A | 3.4" | Screw Terminals | 0.63"-1.31" | UL Listed, CSA Certified, UL 498 | Black | 0000000 | 0000000 |
| NEMA Style | Voltage | Current | OD | Wire Connection Type | For Cable OD | Environmental Rating | Specifications Met | Color | Each | |
Non-Grounded | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 10-50 | 125V AC/250V AC | 50A | 2.9" | Screw Terminals | 0.63"-1.22" | IP20 | UL Listed, CSA Certified, UL 94 HB | Black | 0000000 | 0000000 |
| NEMA Style | Voltage | Current | Face Dia. | Wire Connection Type | Receptacle Terminal Location | Mounting Location | Environmental Rating | Specifications Met | Color | Each | |
Grounded | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 6-50 | 250V AC | 50A | 2.1" | Screw Terminals | Back | Outlet Box | IP20 | UL Listed, CSA Certified, UL 94 V-0 | Black | 0000000 | 000000 |
Non-Grounded | |||||||||||
| 10-50 | 125V AC/250V AC | 50A | 2.1" | Screw Terminals | Back | Outlet Box | IP20 | UL Listed, CSA Certified, UL 94 V-0 | Black | 0000000 | 00000 |
| NEMA Style | Voltage | Current | Face Dia. | Wire Connection Type | Receptacle Terminal Location | Mounting Location | Environmental Rating | Specifications Met | Color | Each | |
Grounded | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 14-50 | 125V AC/250V AC | 50A | 2.4" | Screw Terminals | Back | Outlet Box | IP20 | UL Listed, CSA Certified, UL 94 V-0 | Black | 0000000 | 0000000 |
Insulated Set Screw Lugs
To prevent short-circuiting with nearby wire, a plastic cover insulates the barrel on these lugs. Tighten the set screw for a secure connection without crimping.
45° elbow lugs connect to wire at an angle, so they fit in tight spaces.
Lug covers go over the entire lug, so they prevent accidental contact with other connections.
For technical drawings and 3-D models, click on a part number.
| For Wire Gauge | For Screw Size | For Screw Size Decimal Equivalent | Lg. | Wd. | Ht. | Thick. | For Wire Type | For Wire Material | Insulation Color | Insulation Material | Terminal Material | Max. Temp., °F | Max. Voltage | Each | |
Straight | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 Hole — 1 Wire | |||||||||||||||
| 6-1/0 | 1/2" | 0.5" | 3.625" | 1.054" | 1.270" | 0.2" | Stranded | Copper | Black | Nylon | Copper | 470° | 40V AC 40V DC | 0000000 | 000000 |
| 2/0-4/0 | 1/2" | 0.5" | 3.625" | 1.080" | 1.520" | 0.188" | Stranded | Copper | Black | Nylon | Copper | 470° | 40V AC 40V DC | 0000000 | 00000 |
1 Hole — 2 Wire | |||||||||||||||
| 2/0-4/0 | 5/8" | 0.625" | 6.875" | 2.687" | 1.562" | 0.257" | Stranded | Copper | Black | Nylon | Copper | 350° | 40V AC 40V DC | 0000000 | 00000 |
45° Elbow | |||||||||||||||
1 Hole — 1 Wire | |||||||||||||||
| 6-1/0 | 1/2" | 0.5" | 3.125" | 1.073" | 1.750" | 0.215" | Stranded | Copper | Black | Nylon | Copper | 470° | 40V AC 40V DC | 0000000 | 00000 |
| 2/0-4/0 | 1/2" | 0.5" | 3.375" | 0.913" | 1.991" | 0.188" | Stranded | Copper | Black | Nylon | Copper | 470° | 40V AC 40V DC | 0000000 | 00000 |
| For Wire Gauge | Material | Each | |
| 6-4/0 | Vinyl Plastic | 0000000 | 000000 |
Lug Covers
Prevent accidental contact with other connections.
| For Wire Gauge | Material | For Lug Shape | Each | |
| 6-4/0 | Vinyl Plastic | Straight | 0000000 | 000000 |
Solder and Crimp-On Lugs
Solder these lugs in place, or use a crimping tool (not included) for a secure connection.
Lug covers (sold separately) prevent accidental contact with other connections.
For technical drawings and 3-D models, click on a part number.
| For Wire Gauge | For Screw Size | For Screw Size Decimal Equivalent | For Wire Type | For Wire Material | Terminal Material | Lg. | Wd. | Ht. | Thick. | Max. Voltage | Each | |
1 Hole — 1 Wire | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6-2 | 1/2" | 0.5" | Stranded | Copper | Copper | 2.67" | 0.78" | 0.63" | 0.12" | 80V DC 80V AC | 000000 | 00000 |
| 1-2/0 | 1/2" | 0.5" | Stranded | Copper | Copper | 2.89" | 1" | 0.768" | 0.15" | 80V DC 80V AC | 000000 | 0000 |
| 3/0-4/0 | 1/2" | 0.5" | Stranded | Copper | Copper | 3.15" | 1.17" | 0.89" | 0.16" | 80V DC 80V AC | 000000 | 0000 |
| 4/0 | 5/8" | 0.625" | Stranded | Copper | Copper | 3.87" | 1.36" | 1.02" | 0.17" | 80V DC 80V AC | 000000 | 00000 |
| For Wire Gauge | Material | Each | |
| 6-4/0 | Vinyl Plastic | 0000000 | 000000 |
Hammer-On Lugs
Slide these lugs onto cable and strike them with your hammer to create a durable connection.
Lug covers prevent accidental contact with other connections.
For technical drawings and 3-D models, click on a part number.
| For Wire Gauge | Material | Each | |
| 6-4/0 | Vinyl Plastic | 0000000 | 000000 |
Solder and Crimp-On Lug Assortments
Keep a variety of lug sizes on hand. Either solder these lugs into place, or use a hammer-on crimper (not included) for a secure connection.
| Number of Pieces | Includes | Wire Connection Type | For Wire Material | For Wire Type | Terminal Material | Max.Temp., °F | Max. Voltage | Each | |
1 Hole — 1 Wire | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 68 | 6 AWG for 1/4", 5/16" and 3/8" Screws, 4 AWG for 1/4", 5/16", 3/8" and 1/2" Screws, ; 2 AWG, 1/0-4/0 for 3/8" and 1/2" Screws, Plastic Compartmented Case | Crimp On, Solder | Copper | Stranded | Copper | 190° | 48V DC | 0000000 | 000000 |
Power Cords
Connect equipment and devices to a power supply.
Cords with a NEMA 14-30 or 14-50 plug are often used to power electric vehicles. They have a high current rating.
Cords with a 90° elbow plug fit flush against a wall outlet, so they fit behind machinery or in areas where space is tight.
The insulation on STW and SJTW cords resists water. SRDT cords are for use with high-current equipment, such as ranges and dryers.
Cord | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wire Gauge | Current, A | Voltage | Lg., ft. | OD | Wd. | Insulation Material | Industry Designation | Temp. Range, °F | Specifications Met | Color | Each | |
90° Elbow NEMA 10-50 Plug × Spade Terminals | ||||||||||||
| 8, 6 | 50 | 125V AC/250V AC | 4 | __ | 1.03" | PVC Plastic | SRDT | 0° to 140° | UL Listed | Gray | 000000000 | 000000 |
| 8, 6 | 50 | 125V AC/250V AC | 6 | __ | 1.03" | PVC Plastic | SRDT | 0° to 140° | UL Listed | Gray | 00000000 | 00000 |
90° Elbow NEMA 14-50 Plug × Wire Leads | ||||||||||||
| 8, 6 | 50 | 125V AC/250V AC | 4 | 1.08" | __ | PVC Plastic | STW | 0° to 140° | UL Listed | Black | 000000000 | 00000 |
| 8, 6 | 50 | 125V AC/250V AC | 30 | 1.08" | __ | PVC Plastic | STW | 0° to 140° | UL Listed | Black | 000000000 | 000000 |
| 8, 6 | 50 | 125V AC/250V AC | 36 | 1.08" | __ | PVC Plastic | STW | 0° to 140° | UL Listed | Black | 000000000 | 000000 |
90° Elbow NEMA 14-50 Plug × Spade Terminals | ||||||||||||
| 8, 6 | 50 | 125V AC/250V AC | 4 | 0.8" | __ | PVC Plastic | SRDT | 0° to 140° | UL Listed | Black | 000000000 | 00000 |
| 8, 6 | 50 | 125V AC/250V AC | 6 | 0.8" | __ | PVC Plastic | SRDT | 0° to 140° | UL Listed | Black | 00000000 | 00000 |
Abrasion-Resistant Extension Cords
Thick insulation protects the internal wires of these cords, so they can be used in high-traffic areas and over rough surfaces. The industry designation is STW, so the insulation resists water.
Cords with a NEMA 14-50 plug and socket have a high current rating and are often used to power electric vehicles. The light on their socket illuminates when the cord has power. Their plug and socket have handles, making them easy to grip when plugging or unplugging them.
Cords with a 90° elbow plug fit flush against a wall outlet, so they fit behind machinery or in areas where space is tight.
For technical drawings and 3-D models, click on a part number.
Cord | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wire Ga. | Current, A | Voltage | Power-Indicating Light | Features | OD | Insulation Material | Industry Designation | Specifications Met | Color | Each | |
90° Elbow NEMA 14-50 Plug × NEMA 14-50 Socket | |||||||||||
15 ft. | |||||||||||
| 8, 6 | 50 | 125V AC/250V AC | With Power-Indicating Light | Handle | 1.08" | PVC Plastic | STW | UL Listed, C-UL Listed | Black | 00000000 | 0000000 |
30 ft. | |||||||||||
| 8, 6 | 50 | 125V AC/250V AC | With Power-Indicating Light | Handle | 1.08" | PVC Plastic | STW | UL Listed, C-UL Listed | Black | 00000000 | 000000 |
50 ft. | |||||||||||
| 8, 6 | 50 | 125V AC/250V AC | With Power-Indicating Light | Handle | 1.08" | PVC Plastic | STW | UL Listed, C-UL Listed | Black | 00000000 | 000000 |
Grounding Clamps for Welding
Designed specifically for use with welding circuits. Clamps that are copper or have copper-plated components prevent weld spatter from sticking.
C-clamps tighten with a handle. Use these multipurpose tools for strong clamping in nearly any application. Heavy duty clamps have a strong frame that won’t spread when holding big workpieces, such as large diameter pipe and thick plate. No-twist clamps have jaws that move in unison to apply even pressure and prevent twisting while securing your workpiece. They’re also known as cantilever clamps. Clamps with an ABS plastic handle have a cushioned grip that’s comfortable to hold.
Plier clamps are good for light duty applications that require mobility, such as building a fence. Nonconductive clamps won’t transmit electricity, meaning you can touch them while the power is on without disrupting the circuit.
Spring clamps have an extended jaw that eases clamping. Both jaws carry current. Flat-jaw clamps grip flat surfaces especially well. They have a larger contact area with the workpiece than standard spring clamps, so electricity flows more easily, but their jaw openings aren’t as large.
Magnetic clamps stick to metal surfaces on your workpiece, even oddly-shaped and sized ones. Compared to traditional clamps, they require less manual effort and are less limited by the amount of space available on your workpiece. However, you can’t use them on aluminum or nonferrous material, and their hold is usually less powerful than traditional clamps. Clamps with an on/off switch let you engage and disengage the magnet for easy placement and removal of your workpiece. Multiple-angle clamps let you hold more than one workpiece at a time, at different angles.
Cable supports prevent cable strand breakage.
For technical drawings and 3-D models, click on a part number.
| Current, A | For Wire Gauge | For No. of Wires | Max. Cable Outlet Dia. | Jaw Opening | Connection Material | Cable Connection Type | Features | Each | |
Standard | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 300 | 1/0, 2/0 | __ | 0.56" | 2" | Bronze | Male and Female Cam | Copper-Plated Steel Screw | 0000000 | 000000 |
| 300 | 1/0, 2/0 | __ | 0.56" | 2" | Bronze | Screw | Copper-Plated Steel Screw | 0000000 | 00000 |
| 600 | 3/0, 4/0 | __ | 0.63" | 2" | Bronze | Male and Female Cam | Copper-Plated Steel Screw | 0000000 | 000000 |
| 600 | 3/0, 4/0 | __ | 0.63" | 2" | Bronze | Screw | Copper-Plated Steel Screw | 0000000 | 000000 |
Heavy Duty | |||||||||
| 600 | 3/0, 4/0 | 1 | 0.66" | 3 3/8" | Bronze | Male and Female Cam | Copper-Plated Steel Screw | 0000000 | 000000 |
| 600 | 3/0, 4/0 | 1 | 0.66" | 3 3/8" | Bronze | Screw | Copper-Plated Steel Screw | 0000000 | 000000 |
No Twist | |||||||||
| 400 | __ | __ | __ | 4 1/2" | Copper | Bolt and Nut | __ | 0000000 | 00000 |
| 400 | __ | __ | __ | 4 1/2" | Copper | Bolt and Nut | ABS Plastic Handle | 0000000 | 00000 |
| Current, A | For Wire Gauge | Jaw Opening | Connection Material | Cable Connection Type | Stud Lg. | Features | Each | |
| 180 | 1/0 | 2" | Copper | Bolt and Nut | 1/2" | Nonconductive, Cable Support | 0000000 | 000000 |
| 200 | 1/0 | 1 1/2" | Steel | Bolt and Nut | 3/4" | Cable Support | 0000000 | 0000 |
| 300 | 1/0, 2/0 | 2" | Steel | Bolt and Nut | 3/4" | Cable Support | 0000000 | 00000 |
| 500 | 3/0, 4/0 | 2" | Steel | Bolt and Nut | 3/4" | Braided Copper Shunt, Cable Support | 0000000 | 00000 |
| Current, A | For Wire Gauge | Max. Cable Outlet Dia. | Jaw Opening | Connection Material | Cable Connection Type | Features | Each | |
Standard | ||||||||
|---|---|---|---|---|---|---|---|---|
| 200 | 6, 5, 4, 3, 2, 1, 1/0 | 0.51" | 1" | Copper | Screw | Copper Hinge Pin, Cable Support | 000000 | 000000 |
| 300 | 6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0 | 0.54" | 1 1/2" | Copper | Screw | Copper Hinge Pin, Cable Support | 000000 | 00000 |
| 500 | 6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0 | 0.58" | 2" | Copper | Screw | Copper Hinge Pin, Cable Support | 000000 | 00000 |
Flat Jaw | ||||||||
| 200 | 6, 5, 4, 3, 2, 1, 1/0 | __ | 5/8" | Copper | Screw | Copper Hinge Pin | 0000000 | 00000 |
| 300 | 6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0 | __ | 1" | Copper | Screw | Copper Hinge Pin | 0000000 | 00000 |
| 500 | 6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0 | __ | 1 1/4" | Copper | Screw | Copper Hinge Pin | 0000000 | 00000 |
