Wire Connection Type Wire Connection Type |
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Screw Terminals | Crimp On |
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Solder | Screw-Clamp Terminals |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Cable Connection Type Cable Connection Type |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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 | ||||||||||
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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 |
Solder and Crimp-On Welding Lugs

Solder these lugs in place, or use a crimping block and punch (sold separately) and hit them with a hammer for the most secure connection of any of the welding lugs we offer.
For technical drawings and 3-D models, click on a part number.
For Wire Gauge | Lug ID | Hole Size | For Wire Type | For Wire Material | Terminal Material | Lg. | Wd. | Ht. | Max. Voltage | Each | |
1 Hole — 1 Wire | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
8-6 | 0.289" | 0.328" | Stranded | Copper | Copper | 1.39" | 0.539" | 0.38" | Not Rated | 0000000 | 00000 |
6-4 | 0.347" | 0.328" | Stranded | Copper | Copper | 1.6" | 0.622" | 0.45" | Not Rated | 0000000 | 0000 |
6-2 | 0.461" | 0.531" | Stranded | Copper | Copper | 2.67" | 0.78" | 0.63" | 80V DC 80V AC | 000000 | 0000 |
1-2/0 | 0.559" | 0.531" | Stranded | Copper | Copper | 2.89" | 1" | 0.768" | 80V DC 80V AC | 000000 | 0000 |
3/0-4/0 | 0.66" | 0.531" | Stranded | Copper | Copper | 3.15" | 1.17" | 0.89" | 80V DC 80V AC | 000000 | 0000 |
4/0 | 0.776" | 0.656" | Stranded | Copper | Copper | 3.87" | 1.36" | 1.02" | 80V DC 80V AC | 000000 | 00000 |
Crimping Block and Punch | 0000000 | Each | 000000 |
Screw-Down Welding Lugs

Tighten the screw with a 1/4" hex key for a more secure connection than Hammer-On Welding Lugs.
For technical drawings and 3-D models, click on a part number.
For Wire Gauge | Lug ID | Hole Size | For Wire Type | For Wire Material | Terminal Material | Max. Temp., °F | Lg. | Wd. | Ht. | Each | |
45° Elbow | |||||||||||
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1 Hole — 1 Wire | |||||||||||
6-1/0 | 1/2" | 0.531" | Stranded | Copper | Copper | 470° | 3.125" | 1.073" | 1.75" | 0000000 | 000000 |
2/0-4/0 | 0.641" | 0.531" | Stranded | Copper | Copper | 470° | 3.375" | 0.913" | 1.991" | 0000000 | 00000 |
Straight | |||||||||||
1 Hole — 1 Wire | |||||||||||
6-1/0 | 1/2" | 0.531" | Stranded | Copper | Copper | 470° | 3.625" | 1.054" | 1.27" | 0000000 | 00000 |
2/0-4/0 | 0.641" | 0.531" | Stranded | Copper | Copper | 470° | 3.625" | 1.08" | 1.52" | 0000000 | 00000 |
Welding Lug Covers

Prevent accidental contact with other welding connections.
For Wire Gauge | Material | For Lug Shape | Each | |
6-4/0 | Vinyl Plastic | Straight | 0000000 | 000000 |
Hammer-On Welding Lugs

Slide these lugs onto cable and strike them with your hammer to create a durable connection.
For technical drawings and 3-D models, click on a part number.
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 | ||||||||
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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 |

