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Centerfire consumables family shown with contact tips, nozzle and diffuser Cutaway view of Centerfire Centerfire contact tip shown from front Centerfire diffuser shown from front Centerfire diffuser shown from top Centerfire diffuser shown from bottom Centerfire nozzle shown from front Centerfire nozzle shown from bottom at 45-degree angle Centerfire nozzle shown from bottom

Centerfire Consumables

Bernard developed the Centerfire™ consumables system with the user’s cost considerations in mind. These contact tips, nozzles and diffusers are easy to use and high performing – providing better arc starts, less spatter and more consistent welds. Plus, they also last up to three times longer than competitive brands.

Not currently using a Bernard® MIG gun? You can still enjoy the benefits of Centerfire consumables by installing them on other brands of MIG guns by using our Centerfire conversion series.

All consumables are not created equal. From materials to cost and design quality, each brand on the market varies and so does their performance. Comparing consumable quality and costs to the amount of labor for changeover and rework often reveals surprising results – less expensive consumables don’t always add up to cost savings.

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  • No tools required to replace tip or nozzle
  • “Drop-in” tip with no threads means quick change after burnback, reducing down time
  • Large diameter tip base and tapered seat provides better electrical conductivity and heat transfer
  • Spatter shield within nozzle protects diffuser and gives smoother, less turbulent gas flow
  • Solid, concentric relationship between tip and nozzle keeps tip centered even after hard use and abuse
  • Threaded nozzle holds tip fixed at 1/4″ or 1/8″ recess, flush, or 1/8″ stick out
  • Complete family of tips and nozzles is available to meet most of your welding needs

Looking for heavy-duty consumables?

The Centerfire HD series is designed specifically for shipbuilding, trailer fabrication or any heavy equipment manufacturing operation.

Centrefire Group Consumables
  • Nozzles feature a removable nozzle cone, thicker walls and a high temperature insulator
  • Removable nozzle cone — allows greater access to the nozzle body for spatter removal. Cleaning is easy!
  • Available in a variety of configurations with several nozzle orifices and tip recesses
  • Compatible with standard Centerfire contact tips, gas diffusers and insulating caps

System Components

Centerfire Consumables

  • Centerfire contact tips
  • Centerfire gas diffusers
  • Centerfire nozzles
  • Neck insulators
    • 4523R (small insulator)
    • 4423R (large insulator)

Centerfire HD Series Consumables

  • Centerfire contact tips
  • Centerfire gas diffusers
  • Centerfire nozzle cones
  • Centerfire nozzle bodies
  • Neck insulators
    • 4423R (large insulator)

Product Compatibility

Centerfire consumables are compatible with the following:

Centerfire Contact Tips; Copper

For use with Centerfire and Centerfire HD series consumables

Part NumberDescription
T-023‘T’ series contact tip for 0.023″ (0.6 mm) wire
T-030‘T’ series contact tip for 0.030″ (0.8 mm) wire
T-035‘T’ series contact tip for 0.035″ (0.9 mm) wire
T-039‘T’ series contact tip for 0.039″ (1.0 mm) wire
T-045‘T’ series contact tip for 0.045″ (1.2 mm) wire
T-052‘T’ series contact tip for 0.052″ (1.4 mm) wire
T-062‘T’ series contact tip for 1/16″ (1.6 mm) wire
T-072‘T’ series contact tip for 0.072″ (1.8 mm) wire
T-078‘T’ series contact tip for 5/64″ (2.0 mm) wire
T-094‘T’ series contact tip for 3/32″ (2.4 mm) wire

Centerfire Tapered Contact Tips; Copper

For use with Centerfire consumables; Not available for use with Centerfire HD series consumables

Part NumberDescription
TT-030‘TT’ series contact tip for 0.030″ (0.8 mm) wire; tapered
TT-035‘TT’ series contact tip for 0.035″ (0.9 mm) wire; tapered
TT-039‘TT’ series contact tip for 0.039″ (1.0 mm) wire; tapered
TT-045‘TT’ series contact tip for 0.045″ (1.2 mm) wire; tapered
TT-052‘TT’ series contact tip for 0.052″ (1.4 mm) wire; tapered
TT-062‘TT’ series contact tip for 1/16″ (1.6 mm) wire; tapered
Part NumberDescription
D-1Gas diffuser, large

For use with Centerfire consumables; Not available for use with Centerfire HD series consumables

Part NumberDescription
DS-1Gas diffuser, small
DW-1Gas diffuser, water-cooled

Centerfire Nozzles; Small

Part NumberDescription
NS-5800C5/8″ bore, flush, copper
NS-5818C5/8″ bore, 1/8″ recess, copper
NS-5800B5/8″ bore, flush, brass
NS-5818B5/8″ bore, 1/8″ recess, brass
NS-1218C1/2″ bore, 1/8″ recess, copper
NS-1200B1/2″ bore, flush, brass
NS-1218B1/2″ bore, 1/8″ recess, brass
NS-FLXSelf-Shielded Conversion Kit (includes 7010024 and 7010059 insulators, plus 7010046 tip holder)
NST-3800B3/8″ bore, flush, brass; tapered
NST-3818B3/8″ bore, 1/8″ recess, brass; tapered
NST-38XTB3/8″ bore, 1/8″ extension, brass; tapered

Centerfire Nozzles; Large

Part NumberDescription
N-3400C3/4″ bore, flush, copper
N3418C3/4″ bore, 1/8″ recess, copper
N-3414C3/4″ bore, 1/4″ recess, copper
N-3418B3/4 bore, 1/8″ recess, brass
N-3414B3/4″ bore, 1/4″ recess, brass
N-5800C5/8″ bore, flush, copper
N-5818C5/8″ bore, 1/8 recess, copper
N-5814C5/8″ bore, 1/4″ recess, copper
N-5818B5/8″ bore, 1/8″ recess, brass
N-5814B5/8″ bore, 1/4″ recess, brass
NT-3800C3/8″ bore, flush, copper; tapered

Centerfire Nozzles; Water-Cooled

Part NumberDescription
NW-3418C3/4″ bore, 1/8″ recess, copper
NW-3414C3/4″ bore, 1/4″ recess, copper

Compatible Liners

Bernard Conventional Liners

Part NumberLiner Color:Description
L1A-15Yellowfor 0.023″-0.030″ (0.6-0.8 mm) wire, 15 ft (4.57 m)
L1A-25Yellowfor 0.023″-0.030″ (0.6-0.8 mm) wire, 25 ft (7.62 m)
L2A-15Greenfor 0.030″-0.035″ (0.8-0.9 mm) wire, 15 ft (4.57 m)
L2A-25Greenfor 0.030″-0.035″ (0.8-0.9 mm) wire, 25 ft (7.62 m)
L3A-15*Whitefor 0.035″-0.045″ (0.9-1.2 mm) wire, 15 ft (4.57 m)
L3A-25*Whitefor 0.035″-0.045″ (0.9-1.2 mm) wire, 25 ft (7.62 m)
L4A-15**Redfor 0.045″-1/16″ (1.2-1.6 mm) wire, 15 ft (4.57 m)
L4A-25**Redfor 0.045″-1/16″ (1.2-1.6 mm) wire, 25 ft (7.62 m)
L6A-15Bluefor 5/64″ (2.0 mm) wire, 15 ft (4.57 m)
L6A-25Bluefor 5/64″ (2.0 mm) wire, 25 ft (7.62 m)
L7A-15Greyfor 3/32″ (2.4 mm) wire, 15 ft (4.57 m)
L7A-25Greyfor 3/32″ (2.4 mm) wire, 25 ft (7.62 m)
L8A-15Blackfor 7/64″-1/8″ (2.8-3.2 mm) wire, 15 ft (4.57 m)
L8A-25Blackfor 7/64″-1/8″ (2.8-3.2 mm) wire, 25 ft (7.62 m)
*Standard liner for guns using 0.035″ and 0.045″ wire
**Standard liner for guns using 1/16″ wire

QUICK LOAD® Liners

Part NumberDescription
415-35-6Qfor 0.035″ – 0.045″ wire, 6′ length; high carbon steel – round wound; replaces conventional liner 415-35-6
415-35-10Qfor 0.035″ – 0.045″ wire, 10′ length; high carbon steel – round wound; replaces conventional liner 415-35-10
415-35-15Qfor 0.035″ – 0.045″ wire, 15′ length; high carbon steel – round wound; replaces conventional liner 415-35-15
415-35-25Qfor 0.035″ – 0.045″ wire, 25′ length; high carbon steel – round wound; replaces conventional liner 415-35-25
415-116-6Qfor 0.045″ – 1/16″ wire, 6′ length; high carbon steel – round wound; replaces conventional liner 415-116-6
415-116-10Qfor 0.045″ – 1/16″ wire, 10′ length; high carbon steel – round wound; replaces conventional liner 415-116-10
415-116-15Qfor 0.045″ – 1/16″ wire, 15′ length; high carbon steel – round wound; replaces conventional liner 415-116-15
415-116-25Qfor 0.045″ – 1/16″ wire, 25′ length; high carbon steel – round wound; replaces conventional liner 415-116-25
415-332-6Qfor 0.078″ – 3/32″ wire, 6′ length; high carbon steel – round wound; replaces conventional liner 415-332-6

QUICK LOAD Liner Retainers

Required for initial QUICK LOAD liner installation only (sold separately)

Part NumberDescription
415-26*for 0.030″ – 5/64″ wire
415-37**for 0.030″ – 5/64″ wire

Liners for Aluminum Wire

Part NumberDescription
415-45-02Polymer liner for 0.035″ – 3/64″ aluminum wire, 10′ length
415-45-03Polymer liner for 0.035″ – 3/64″ aluminum wire, 15′ length
415-35-2Steel wrapped nylon liner for 0.035″ – 0.045″ aluminum wire, 15′ length
415-45-04Polymer liner for 0.035″ – 3/32″ aluminum wire, 25′ length
415-116-2Steel wrapped nylon liner for 0.045″ – 1/16″ aluminum wire, 15′ length
415-116-22Polymer liner for 3/64″ – 1/16″ aluminum wire, 10′ length
415-116-23Polymer liner for 3/64″ – 1/16″ aluminum wire, 15′ length
415-116-26Polymer liner for 3/64″ – 1/16″ aluminum wire, 25′ length

Jump Liners

Not recommended for use with QUICK LOAD liners

Part NumberDescription
QJL-3545Jump Liner for 0.035″ (0.9 mm) – 0.045″ (1.2 mm) wire; 14″ length
QJL-116Jump Liner for 1/16″ (1.6 mm) wire; 14″ length

Centerfire HD Series Consumables

Centerfire Contact Tips; Copper

Part NumberDescription
T-023‘T’ Series contact tip for 0.023″ (0.6 mm) wire
T-030‘T’ Series contact tip for 0.030″ (0.8 mm) wire
T-035‘T’ Series contact tip for 0.035″ (0.9 mm) wire
T-039‘T’ Series contact tip for 0.039″ (1.0 mm) wire
T-045‘T’ Series contact tip for 0.045″ (1.2 mm) wire
T-052‘T’ Series contact tip for 0.052″ (1.4 mm) wire
T-062‘T’ Series contact tip for 1/16″ (1.6 mm) wire
T-072‘T’ Series contact tip for 0.072″ (1.8 mm) wire
T-078‘T’ Series contact tip for 5/64″ (2.0 mm) wire
T-094‘T’ Series contact tip for 3/32″ (2.4 mm) wire

Centerfire Gas Diffuser

Part NumberDescription
D-1Large gas diffuser

Centerfire Nozzle Body

Part NumberDescription
N-HDCNozzle body

Centerfire Nozzle Cones

Part NumberDescription
34183/4″ bore, 1/8″ recess
58145/8″ bore, 1/4″ recess
58185/8″ bore, 1/8″ recess

Neck Insulator

Part NumberDescription
4423RLarge insulator

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Copyright 2024 Tregaskiss | All Rights Reserved

As manufacturers of semi-automatic, fixed automatic and robotic MIG guns and consumables, Tregaskiss and Bernard have earned a reputation as an experienced, dependable partner to its customers in the automotive, construction and fabrication, heavy equipment, ship, rail, general manufacturing, commercial truck and trailer, and oil and gas industries. Tregaskiss and Bernard offer air-cooled semi-automatic, fixed automatic and robotic MIG guns, water-cooled semi-automatic, fixed automatic and robotic MIG guns, reamers, nozzle cleaning stations, anti-spatter liquid, wire cutters, anti-spatter sprayers, clutches, welding consumables, nozzles, MIG welding tips, and MIG welding torches.