Lincoln KP2743-1-62R Nozzle, Thread-on, 1/8R, 5/8 ID, Pack of (1): Replacement Part Breakdown

This page breaks down the Lincoln KP2743-1-62R Nozzle, Thread-on, 1/8R, 5/8 ID, Pack of (1) as a replacement part listing for maintenance and purchasing review. Use it to confirm the part number, inspect the current nozzle condition, and verify fit before ordering. Do not assume compatibility from the product name alone. Verify the gun model, consumable family, and thread-on interface against your equipment records.

Key Takeaways

• This is a replacement nozzle listing tied to part number KP2743-1-62R.
• The product title indicates a thread-on nozzle with 1/8R and 5/8 ID; exact machine and gun compatibility is Unknown (Verify).
• Use the part number first, then verify physical dimensions and thread style against the installed nozzle.
• Check for spatter buildup, arc instability, and contact-tip-to-nozzle alignment before replacing parts.
• This article is a buyer and support guide, not a substitute for the gun manual or Lincoln parts list.

What this part is used for

A MIG nozzle directs shielding gas and helps protect the weld zone from contamination. In daily use, the nozzle is also exposed to spatter, heat, and handling damage. A worn nozzle may still install on the gun, but it can cause poor gas coverage, excessive cleanup, or inconsistent performance.

For this listing, the only confirmed product identifier available here is the Amazon ASIN reference B008BJD92S and the product name provided above. Any deeper fitment details, gun series compatibility, or Lincoln cross-reference should be treated as Unknown (Verify) unless confirmed in the manufacturer documentation or your parts database.

Inspect before you replace

Before ordering a replacement, inspect the current nozzle and the rest of the front-end consumables. A nozzle problem is sometimes caused by another worn part.

• Check the nozzle bore: Look for heavy spatter, oval wear, or internal distortion.
• Inspect the threads: Verify the thread-on connection is clean and not galled, stripped, or cross-threaded.
• Verify tip centering: Check whether the contact tip sits centered in the nozzle opening.
• Inspect the diffuser/retainer area: Damage there can make a new nozzle fit poorly.
• Check for heat discoloration: Excessive heat signs can indicate duty cycle, technique, or fitment issues.

Troubleshooting support: common signs and checks

If you are seeing performance problems, use a simple inspection path before authorizing replacement:

• Gas shielding looks weak: Check for nozzle blockage, loose threads, damaged seals, or incorrect nozzle size. Verify gas flow at the torch separately.
• Spatter buildup increases quickly: Inspect wire stickout, technique, process settings, and anti-spatter practices. A worn nozzle may be a symptom, not the root cause.
• Arc starts become inconsistent: Verify contact tip condition, liner condition, and nozzle alignment.
• Nozzle will not thread on smoothly: Stop and inspect the gun neck threads. Do not force installation.
• Visible burnback or overheating: Verify consumable fit and process parameters. Unknown (Verify) on exact operational limits for this part without the gun manual.

Check / Inspect / Verify steps

1. Check the current nozzle part number if it is still legible.
2. Inspect the thread-on interface for damage, contamination, or spatter lock.
3. Verify the gun model and consumable series from the parts diagram or maintenance record.
4. Check the contact tip size and seating position.
5. Verify whether the nozzle dimensions on the listing match the nozzle removed from service.

Product / parts section

Product: Lincoln KP2743-1-62R Nozzle, Thread-on, 1/8R, 5/8 ID, Pack of (1)

ASIN reference: B008BJD92S

Availability, certification, and price: Unknown (Verify)

Compatibility: Unknown (Verify). Confirm against the exact gun and parts list before purchase.

View the referenced product listing

Use the product listing as a procurement reference only. Do not use the title alone to approve fitment for production use. If you are supporting a fleet of welders, compare the installed nozzle against this part number, then confirm the neck thread pattern and the gun family in the service manual.

Replacement decision: when to replace

Replace the nozzle when cleaning no longer restores a stable bore, when threads are damaged, or when the part no longer seats correctly. If the nozzle can be cleaned and reinstalled without loss of fit, the support team may choose to keep it in service. Verify the shop standard before returning a worn part to production.

If a replacement is ordered, record the old part number, the machine ID, and the reason for replacement. That log helps maintenance buyers avoid repeated mismatches.

Safety notes

• Allow the torch to cool before handling the nozzle.
• Wear gloves and eye protection when removing spatter or checking threads.
• Do not force a threaded consumable into damaged threads.
• Verify the welding power source is de-energized or in a safe state before service.
• Use only approved shop procedures for consumable cleaning and replacement.

FAQ

Is this nozzle guaranteed to fit my Lincoln gun?

No. Compatibility is Unknown (Verify) from the information provided here. Confirm the exact gun model and parts diagram before ordering.

What does thread-on mean?

It indicates a nozzle that installs by threading onto the torch neck or related front-end assembly. Verify the exact thread form and seating method on your equipment.

What should I check if the nozzle keeps filling with spatter?

Check technique, gas coverage, contact tip condition, and any damage to the nozzle bore. A replacement may help, but the root cause may be elsewhere.

Can I use this listing as an approval for procedure settings?

No. A parts listing is not a procedure approval. Use the welding procedure, gun manual, and shop standards for operating settings.

Sources Checked

• Provided product data for Lincoln KP2743-1-62R Nozzle, Thread-on, 1/8R, 5/8 ID, Pack of (1)
• Provided ASIN reference: B008BJD92S
• Provided internal link rules: no WSP lookup link provided, no filler metal link provided

Note: No WSP lookup page or filler metal finder page was provided in the allowed links for this draft, so none is included here.

Matched Replacement Option

No products found.

Disclosure: As an Amazon Associate, Weld Support Parts may earn from qualifying purchases.

Related Weld Support Guides

• Aluminum ER 5554 3/64″ X 5lb. MIG Welding Wire Spool By Washington Alloy – Weld Support Parts Blog