LINCOLN ELECTRIC Nozzle: 3/4 in, Conical, 1/8 in Recess

The LINCOLN ELECTRIC Magnum Pro 550A Nozzle (MPN KP2743-1-75R) is a conical, threaded nozzle with a 3/4 in opening and a 1/8 in recess relationship to the contact tip. It is designed for use with the Magnum Pro 550…

SKU 3G-OTH-356317

Brand

LINCOLN ELECTRIC

Item

Nozzle: 3/4 in, Conical, 1/8 in Recess

Technical Specifications

LINCOLN ELECTRIC

Manufacturer Part Number

KP2743-1-75R 

For MIG Gun Series

Magnum Pro 550 

For Contact Tip Series

Magnum Pro 550A 

Nozzle to Tip Relationship

1/8 in Recess 

View Full Spec Sheet

Technical Documents

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LINCOLN ELECTRIC Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the LINCOLN ELECTRIC Magnum Pro 550A Nozzle used for?

This conical threaded nozzle directs shielding gas over the weld puddle on Magnum Pro 550 MIG guns. It protects the contact tip from spatter and heat, ensuring consistent arc performance in heavy industrial fabrication, shipbuilding, and structural steel welding.

What are the specifications of the LINCOLN ELECTRIC KP2743-1-75R nozzle?

The KP2743-1-75R is a 3/4 in opening conical nozzle with a 1/8 in recess to the contact tip. It is threaded for secure fitment and designed for the Magnum Pro 550 MIG gun series and Magnum Pro 550A contact tip series. Brand: LINCOLN ELECTRIC.

Where to buy LINCOLN ELECTRIC Magnum Pro 550A nozzles worldwide?

3G Electric supplies the LINCOLN ELECTRIC KP2743-1-75R nozzle to global customers. We handle full logistics, customs clearance, and delivery to your site worldwide. Contact us for a quote and lead time on this genuine LINCOLN ELECTRIC part.

How to install the LINCOLN ELECTRIC Magnum Pro 550A nozzle?

Thread the nozzle onto the Magnum Pro 550 MIG gun neck until hand-tight. Ensure the 1/8 in recess between nozzle and contact tip is maintained for proper gas coverage. Avoid over-tightening to prevent thread damage. Always follow the gun manufacturer's instructions.

Used in

Common applications for LINCOLN ELECTRIC

General steel fabrication — Lincoln Electric UltraCore HD-12C flux-cored wire (E71T-12C, 0.052 in) for single- or multiple-pass welding on carbon steel.

All-position welding with AC power — Lincoln Electric Fleetweld 180 stick electrode (E6011, 5/32 in) for repair and maintenance on galvanized or painted steel.

Severe abrasion resistance — Lincoln Electric Wearshield ME hardfacing electrode (1/8 in, 55 HRC) for earthmoving equipment and crusher components.

Multiprocess welding — Lincoln Electric Flextec 500X with LF-74 wire feeder for switching between MIG, stick, and TIG processes in fabrication shops.

TIG welding with improved gas coverage — Lincoln Electric gas lens (45V44, 3/32 in max electrode) for precision welding of stainless steel or aluminum.

MIG welding of carbon steel — Lincoln Electric ER70S-3 wire (0.035 in, 60 lb spool) for general fabrication and structural welding.

LINCOLN ELECTRIC Products

3G Electric supplies LINCOLN ELECTRIC magnum pro 550a nozzles. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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