15AK 24KD 36KD Consumables MIG Torch Spare Parts Welding Accessories

MIG Contact Tips for 15AK, 24KD and 36KD Torches

INWELT supplies MIG/MAG contact tips for 15AK, 24KD and 36KD torch configurations. The range includes model-specific M6 and M8 thread configurations with E-Cu and CuCrZr material options.

The contact tip transfers welding current to the welding wire and guides the wire through the torch front end. Correct selection depends on the torch model, contact-tip thread, tip length, welding wire diameter and material.

INWELT supports standard supply, bulk orders, custom packaging and OEM/ODM projects for welding equipment manufacturers, distributors, importers and industrial users.

15AK M6 × 25 MIG Contact Tips

The 15AK MIG torch configuration uses an M6 × 25 mm contact-tip format.

Typical applications include general MIG/MAG welding with smaller-diameter welding wires.

15AK Contact Tip Specifications

Item	Specification
Torch Configuration	15AK
Contact Tip Type	MIG / MAG Contact Tip
Thread / Length	M6 × 25 mm
Material Options	E-Cu / CuCrZr
Available Wire Sizes	0.6 / 0.8 / 1.0 / 1.2 mm options according to configuration
Application	MIG / MAG welding
Supply	Standard, bulk and OEM

INWELT's MB15 / 15AK torch documentation identifies an M6 × 25 mm contact-tip configuration. The MB15 torch is specified for 0.6–1.0 mm welding wire, so the contact-tip diameter should be selected according to the actual wire used.

For repeat orders, buyers should confirm the required wire diameter and contact-tip material before production.

24KD M6 × 28 MIG Contact Tips

The 24KD MIG torch configuration uses an M6 × 28 mm contact-tip format.

The longer M6 × 28 mm configuration is different from the M6 × 25 mm 15AK contact tip and should not be selected only by thread diameter.

24KD Contact Tip Specifications

Item	Specification
Torch Configuration	24KD
Contact Tip Type	MIG / MAG Contact Tip
Thread / Length	M6 × 28 mm
Material Options	E-Cu / CuCrZr
Available Wire Sizes	0.6 / 0.8 / 1.0 / 1.2 mm options according to configuration
Application	MIG / MAG welding
Supply	Standard, bulk and OEM

INWELT's MB24 / 24KD torch documentation identifies an E-Cu contact tip in M6 × 28 mm configuration. The MB24 torch itself is specified for 0.8–1.2 mm welding wire.

The correct contact-tip bore should be selected according to the actual welding wire diameter and application.

36KD M8 × 30 MIG Contact Tips

The 36KD MIG torch configuration uses an M8 × 30 mm contact-tip format.

The M8 × 30 mm configuration is different from the M6 contact tips used by 15AK and 24KD torches.

36KD Contact Tip Specifications

Item	Specification
Torch Configuration	36KD
Contact Tip Type	MIG / MAG Contact Tip
Thread / Length	M8 × 30 mm
Material Options	E-Cu / CuCrZr
Available Wire Sizes	Model-specific options
Application	MIG / MAG welding
Supply	Standard, bulk and OEM

INWELT's MB36 documentation identifies a 36KD contact tip with an M8 × 30 mm configuration and a 1.2 mm E-Cu contact tip as a listed spare part. The MB36 torch range is specified for 0.8–1.6 mm welding wire.

For 36KD replacement orders, confirm the required wire diameter, material and contact-tip configuration.

E-Cu vs CuCrZr MIG Contact Tips

INWELT offers E-Cu and CuCrZr options according to the required specification.

E-Cu Contact Tips

Electrolytic copper, commonly referred to as E-Cu, provides good electrical and thermal conductivity and is widely used for general MIG/MAG welding applications.

E-Cu can be a practical option when:

• Standard MIG/MAG welding is required

• Electrical conductivity is a priority

• General-purpose welding is performed

• Regular consumable replacement is acceptable

CuCrZr Contact Tips

Copper-chromium-zirconium, or CuCrZr, is a harder copper alloy with greater resistance to thermal and mechanical loading than standard E-Cu.

CuCrZr can be considered for applications involving:

• Higher thermal loads

• Higher duty cycles

• Repetitive production welding

• Automated or robotic welding

• Greater resistance to contact-tip wear

Material selection should be based on the welding process, wire type, current, duty cycle and required contact-tip performance.

MIG Contact Tip Size and Wire Diameter Selection

The contact-tip bore must correspond to the welding wire and torch configuration.

A contact tip that is too tight can increase wire resistance and feeding problems. A bore that is excessively large can reduce consistent electrical contact and wire positioning.

When selecting a contact tip, confirm:

Selection Factor	What to Check
Torch Model	15AK / 24KD / 36KD
Thread	M6 or M8
Tip Length	25 mm / 28 mm / 30 mm according to model
Wire Diameter	Match the actual welding wire
Material	E-Cu or CuCrZr
Welding Wire	Steel, stainless steel, aluminum or other wire
Welding Process	MIG / MAG
Duty Cycle	Consider thermal loading
Application	Manual, production, automated or robotic welding

The wire diameter should not be selected independently of the torch model.

How to Choose the Correct MIG Contact Tip

Follow these steps when selecting a replacement contact tip.

Step 1: Confirm the Torch Model

Identify whether the torch uses a 15AK, 24KD or 36KD front-end configuration.

Step 2: Check the Thread and Length

Confirm the required configuration:

• 15AK → M6 × 25 mm

• 24KD → M6 × 28 mm

• 36KD → M8 × 30 mm

Step 3: Confirm Welding Wire Diameter

Select the contact-tip bore according to the actual wire diameter.

For example, a 1.0 mm welding wire requires the corresponding 1.0 mm contact-tip configuration rather than simply selecting a tip based on torch model.

Step 4: Select the Contact-Tip Material

Choose E-Cu or CuCrZr according to welding parameters, thermal loading and application requirements.

Step 5: Confirm the Complete Front-End Assembly

The contact tip should work with the corresponding contact-tip holder, gas diffuser and torch head.

MIG Contact Tip Compatibility Guide

The following model relationship provides a quick starting point for replacement selection.

MIG Torch	Contact Tip Thread / Length	Typical Configuration
15AK	M6 × 25 mm	Smaller air-cooled MIG torch
24KD	M6 × 28 mm	Medium-duty MIG torch
36KD	M8 × 30 mm	Higher-current MIG torch

Do not assume that contact tips with the same wire diameter are interchangeable.

For example:

• A 1.2 mm 15AK tip is not automatically interchangeable with a 1.2 mm 24KD tip.

• A 1.2 mm 24KD tip is not interchangeable with a 1.2 mm 36KD tip.

• M6 and M8 contact tips require different corresponding front-end configurations.

Always verify the torch model, thread, length and contact-tip holder before ordering.

When Should a MIG Contact Tip Be Replaced?

There is no universal replacement interval for every MIG contact tip.

Replacement frequency depends on:

• Welding current

• Welding wire diameter

• Welding wire material

• Welding mode

• Duty cycle

• Shielding gas

• Wire-feed condition

• Contact-tip material

• Welding environment

• Spatter and contamination

Inspect the contact tip when you notice:

• Unstable arc

• Irregular wire feeding

• Burnback

• Wire sticking

• Increased spatter

• Visible bore wear

• Tip deformation

• Discoloration caused by excessive heat

A worn contact tip can lose consistent electrical contact with the welding wire and contribute to arc instability and increased spatter.

Common MIG Contact Tip Problems and Solutions

Unstable Arc

Check the contact-tip condition and confirm that the bore diameter matches the welding wire.

Also inspect:

• Wire feeding

• Liner condition

• Contact-tip holder

• Welding cable

• Ground connection

• Welding parameters

Wire Sticking Inside the Contact Tip

Possible causes include:

• Excessive thermal loading

• Incorrect contact-tip size

• Worn contact-tip bore

• Contaminated welding wire

• Poor wire feeding

• Incorrect welding parameters

Replace the contact tip when the internal bore is excessively worn or damaged.

Burnback

Burnback can be associated with incorrect contact-tip selection, wire-feed problems, welding parameters or excessive stick-out.

Inspect the complete wire-feed path rather than replacing the contact tip without checking the cause.

Excessive Spatter

Check:

• Contact-tip condition

• Gas nozzle condition

• Shielding gas

• Welding parameters

• Wire type

• Contact-tip material

A clean and correctly selected contact tip helps maintain consistent current transfer.

MIG Contact Tips for Distributors and OEM Buyers

INWELT supplies 15AK, 24KD and 36KD MIG contact tips for distributors, importers, welding equipment manufacturers and industrial users.

Available supply options can include:

• E-Cu contact tips

• CuCrZr contact tips

• Multiple wire-diameter options

• Model-specific M6 and M8 configurations

• Bulk packaging

• Custom packaging

• Mixed consumable orders

• OEM product supply

For repeat orders, buyers can provide the torch model, existing contact-tip sample, dimensions, wire diameter or reference number.

INWELT can use these specifications to confirm the required contact-tip configuration before bulk production.

Frequently Asked Questions About MIG Contact Tips

What is a MIG contact tip?

A MIG contact tip transfers welding current to the welding wire while guiding the wire through the front end of the MIG torch.

What contact tip does a 15AK MIG torch use?

A typical 15AK configuration uses an M6 × 25 mm contact tip. The correct bore should be selected according to the welding wire diameter.

What contact tip does a 24KD MIG torch use?

A typical 24KD configuration uses an M6 × 28 mm contact tip.

What contact tip does a 36KD MIG torch use?

A typical 36KD configuration uses an M8 × 30 mm contact tip.

What is the difference between M6 × 25 and M6 × 28 contact tips?

The thread diameter is the same, but the length is different. M6 × 25 mm is associated with 15AK configurations, while M6 × 28 mm is commonly used for 24KD configurations.

Can a 24KD contact tip be used on a 15AK torch?

Not automatically. Even when both contact tips use an M6 thread, their length and front-end configuration are different.

What is the difference between E-Cu and CuCrZr contact tips?

E-Cu provides good electrical and thermal conductivity and is commonly used for general welding. CuCrZr has higher hardness and better resistance to thermal and mechanical loading, making it suitable for applications with greater contact-tip stress.

How do I choose the correct contact-tip diameter?

Match the contact-tip bore to the welding wire diameter and confirm the torch-specific thread and length.

Can INWELT supply contact tips in bulk?

Yes. INWELT supports bulk supply, customized packaging and OEM/ODM projects for welding equipment distributors, importers and manufacturers.

Request a Quote for MIG Contact Tips

For 15AK, 24KD or 36KD MIG contact tips, send INWELT the following information:

• Torch model

• Contact-tip thread and length

• Welding wire diameter

• Contact-tip material

• Required quantity

• Packaging requirements

• OEM or private-label requirements

INWELT can provide the corresponding contact-tip configuration, samples, bulk quotation and OEM/ODM supply according to your requirements.