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TOUGH LOCK consumables family shown with contact tips, retaining head and nozzle TOUGH LOCK contact tip shown from front TOUGH LOCK contact tip shown from bottom at 45-degree angle TOUGH LOCK retaining head shown from front TOUGH LOCK retaining head shown from top at 45-degree angle TOUGH LOCK retaining head shown from bottom TOUGH LOCK retaining head shown from top TOUGH LOCK retaining head shown from bottom at 45-degree angle

TOUGH LOCK Consumables

Part of our Common Consumables Platform™, our well-known and trusted TOUGH LOCK® consumables can help to reduce your consumable costs and maintenance downtime.

TOUGH LOCK contact tips are manufactured from high-quality, high-conductivity copper using a mandrel-drawn process that controls tip tolerances. When mated with our TOUGH LOCK retaining heads, they produce lower contact tip temperatures.

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

Learn more about how you can enjoy the benefits of dual taper technology for the same price as single taper TOUGH LOCK retaining heads.

TOUGH LOCK retaining heads with dual taper technology are manufactured with a tapered design at both ends that keep your consumables locked from contact tip to neck for improved weld consistency and to maximize heat dissipation, keeping your front end consumables running even cooler!

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  • Locking feature prevents contact tip and retaining head from overheating due to the loosening vibration often causes — cooler temperature reduces wear and extends consumable life
  • Greater surface area contact between the contact tip, retaining head and neck ensures better heat dissipation and guarantees positive electrical conductivity
  • Dual-lead thread design allows contact tips to be rotated 180° to a new wear position for extended contact tip life
  • Enjoy increased uptime due to less frequent consumable changes
  • TOUGH LOCK consumables are components of the Common Consumable Platform™, which allows for less inventory while maximizing flexibility and productivity across a variety of MIG welding applications

System Components

TOUGH LOCK Consumables

  • TOUGH LOCK contact tips
  • TOUGH LOCK retaining heads
  • Tregaskiss® nozzles

Product Compatibility

TOUGH LOCK consumables are compatible with the following:

TOUGH LOCK Standard Duty (SD) Contact Tips; Copper

Part NumberDescription
403-14-23for 0.023″ (0.6 mm) wire
403-14-30for 0.030″ (0.8 mm) wire
403-14-35for 0.035″ (0.9 mm) wire
403-14-45for 0.045″ (1.2 mm) wire

TOUGH LOCK Heavy Duty (HD) Contact Tips; Copper

Part NumberDescription
403-20-30for 0.030″ (0.8 mm) wire
403-20-35for 0.035″ (0.9 mm) wire
403-20-1.0for 1.0 mm wire
403-20-45for 0.045″ (1.2 mm) wire
403-20-364for 3/64″ (1.2 mm) wire
403-20-52for 0.052″ (1.3 mm) wire
403-20-1.4for 1.4 mm wire
403-20-116for 1/16″ (1.6 mm) wire
403-20-1.8for 1.8 mm wire
403-20-78for 0.078″ (2.0 mm) wire
403-20-564for 5/64″ (2.0 mm) wire
403-20-332for 3/32″ (2.4 mm) wire

TOUGH LOCK Heavy Duty (HD) Tapered Contact Tips; Copper

Part NumberDescription
403-21-30for 0.030″ (0.8 mm) wire
403-21-35for 0.035″ (0.9 mm) wire
403-21-1.0for 1.0 mm wire
403-21-45for 0.045″ (1.2 mm) wire

TOUGH LOCK Extended Life Heavy Duty (EHD) Contact Tips; Chrome Zirconium

Part NumberDescription
403-27-30for 0.030″ (0.8 mm) wire
403-27-35for 0.035″ (0.9 mm) wire
403-27-1.0for 1.0 mm wire
403-27-45for 0.045″ (1.2 mm) wire
403-27-364for 3/64″ (1.2 mm) wire

TOUGH LOCK Extra Heavy Duty (EXHD) Contact Tips; Copper

Part NumberDescription
603-20-1.0for 1.0 mm wire
603-20-45for 0.045″ (1.2 mm) wire
603-20-364for 3/64″ (1.2 mm) wire
603-20-52for 0.052″ (1.3 mm) wire
603-20-1.4for 1.4 mm wire
603-20-116for 1/16″ (1.6 mm) wire
603-20-564for 5/64″ (2.0 mm) wire
603-20-332for 3/32″ (2.4 mm) wire
603-20-764for 7/64″ (2.8 mm) wire
603-20-18for 1/8″ (3.2 mm) wire

TOUGH LOCK Teach Tips

Part NumberDescription
403-20-01Adjustable teach tip
403-20-05Teach tip 1/2″
403-20-062Teach tip 5/8″
403-20-075Teach tip 3/4″
403-20-10mmTeach tip 10 mm
403-20-15mmTeach tip 15 mm

Air-Cooled Nozzles (Slip-On); Light-Duty

Part NumberDescription
151-1-383/8″ bore, 1/8″ tip recess, brass, long taper
151-1-501/2″ bore, 1/8″ tip recess, brass, short taper
151-501/2″ bore, flush tip, brass, short taper

Air-Cooled Nozzles (Slip-On); Standard Duty

Part NumberDescription
401-4-383/8″ bore, flush tip, copper, long taper
401-40-383/8″ bore, 1/16″ tip recess, brass, long taper
401-44-501/2″ bore, 1/4″ stick out, brass, bottleneck
401-48-501/2″ bore, 1/8″ stick out, brass, bottleneck
401-48-50C1/2″ bore, 1/8″ stick out, copper, bottleneck
401-42-501/2″ bore, 1/8″ tip recess, brass, bottleneck
401-4-501/2″ bore, 1/8″ tip recess, copper, short taper
401-44-625/8″ bore, 1/4″ stick out, copper, short taper
401-8-625/8″ bore, 1/8″ stick out, copper, bottleneck
401-4-625/8″ bore, 1/8″ tip recess, copper, short taper

Air-Cooled Nozzles (Slip-On); Heavy Duty

Part NumberDescription
401-6-501/2″ bore, 1/8″ tip recess, copper, short taper
401-87-569/16″ bore, 1/8″ tip recess, brass, long taper
401-49-625/8″ bore, 1/8″ stick out, copper, bottleneck
401-81-625/8″ bore, 1/8″ stick out, copper, short taper
401-87-625/8″ bore, 1/8″ stick out, brass, short taper
401-49-625/8″ bore, 1/8″ stick out, copper, bottleneck
401-30-625/8″ bore, 1/8″ stick out, brass, bottleneck
401-48-625/8″ bore, flush tip, copper, bottleneck
401-88-625/8″ bore, flush tip, brass, long taper
401-51-625/8″ bore, flush tip, brass, bottleneck
401-71-625/8″ bore, 1/8″ tip recess, brass, short taper
401-72-625/8″ bore, 1/8″ tip recess, brass, short taper
401-6-625/8″ bore, 1/8″ tip recess, copper, short taper
401-50-625/8″ bore, 5 mm tip recess, copper, bottleneck
401-7-625/8″ bore, 1/4″ tip recess, brass, short taper
401-5-625/8″ bore, 1/4″ tip recess, copper, short taper
401-6-753/4″ bore, 1/8″ tip recess, copper, short taper
401-7-753/4″ bore, 1/8″ tip recess, brass, short taper
401-5-753/4″ bore, 1/4″ tip recess, copper, short taper
401-7-877/8″ bore, 1/4″ tip recess, brass, straight bore
401-10-877/8″ bore, 1/4″ tip recess, brass, straight bore

Air-Cooled Nozzles (Thread-On); Standard Duty

For use with TOUGH LOCK diffuser 404-52-25 or 404-53-25

Part NumberDescription
401-42-383/8″ bore, 1/8″ tip recess, copper, short taper
401-18-625/8″ bore, 1/8″ stick out, copper, short taper
401-43-625/8″ bore, 1/8″ tip recess, copper, short taper

For use with Tregaskiss® conventional diffuser 404-25 or 404-1-25, or TOUGH LOCK diffuser 404-15-25

Part NumberDescription
401-16-501/2″ bore, 1/8″ stick out, copper, short taper
401-46-501/2″ bore, 1/4″ tip recess, copper, short taper
401-41-501/2″ bore, extended reach, brass, short taper

Air-Cooled Nozzles (Thread-On); Heavy Duty

For use with TOUGH LOCK diffuser 404-52-25 or 404-53-25

Part NumberDescription
401-41-625/8″ bore, 1/8″ stick out, brass, long taper
401-30-62T5/8″ bore, 1/8″ stick out, brass, bottleneck
401-14-625/8″ bore, 1/8″ tip recess, copper, short taper

Water-Cooled Nozzles; Standard Duty

For use with Bernard® 450 amp T-Gun™ semi-automatic water-cooled MIG guns

Part NumberDescription
451-6-501/2″ bore, 1/8″ tip recess, copper, short taper
451-5-625/8″ bore, 1/4″ tip recess, copper, short taper
451-6-625/8″ bore, 1/8″ tip recess, copper, short taper
451-8-625/8″ bore, 1/8″ stick out, copper, short taper

Water-Cooled Nozzles; Heavy Duty

For use with Bernard® 450 amp T-Gun™ semi-automatic and Tregaskiss® 350 amp MW1 fixed automatic water-cooled MIG guns

Part NumberDescription
451-1-625/8″ bore, 1/4″ tip recess, copper, short taper
451-61-625/8″ bore, flush tip, copper, short taper

For use with Bernard® 600 amp T-Gun™ semi-automatic and Tregaskiss® 385 amp MW1 fixed automatic water-cooled MIG guns

Part NumberDescription
601-5-625/8″ bore, 1/4″ tip recess, nickel-plated bronze, short taper
601-6-625/8″ bore, 1/8″ tip recess, nickel-plated bronze, short taper
601-5-753/4″ bore, 1/4″ tip recess, nickel-plated bronze, short taper
601-6-753/4″ bore, 1/8″ tip recess, nickel-plated bronze, short taper
601-5-75-3Insulator for 601 Series Nozzle

Water-Cooled Nozzles; Heavy Duty

For use with Tregaskiss® 600 amp robotic water-cooled MIG guns

Part NumberDescription
650-6-625/8″ bore, 1/8″ tip recess, chrome, short taper
651-5-625/8″ bore, 1/4″ tip recess, chrome, short taper
651-6-625/8″ bore, 1/8″ tip recess, chrome, short taper
650-6-753/4″ bore, 1/8″ tip recess, chrome, short taper
651-5-753/4″ bore, 1/4″ tip recess, chrome, short taper
651-6-753/4″ bore, 1/8″ tip recess, chrome, short taper

TOUGH LOCK Retaining Heads; Single Taper

Part NumberDescription
404-30-25for robotic applications; heavy duty, qty: 25
404-30for robotic applications; heavy duty, qty: 100
404-30-250for robotic applications; heavy duty, qty: 250
404-14-25for robotic applications; standard duty, qty: 25
404-14for robotic applications; standard duty, qty: 100
404-20-25for semi-automatic applications; heavy duty, qty: 25
404-20for semi-automatic applications; heavy duty, qty: 100
404-20-250for semi-automatic applications; heavy duty, qty: 250
404-14-25for semi-automatic applications; standard duty, qty: 25
404-14for semi-automatic applications; standard duty, qty: 100
404-38-25for 600 amp water-cooled applications; diffuser, qty: 25
404-38for 600 amp water-cooled applications; diffuser, qty: 100

TOUGH LOCK Retaining Heads; Dual Taper

Part NumberDescription
404-32-25for robotic applications; heavy duty, qty: 25
404-32for robotic applications; heavy duty, qty: 100
404-32-250for robotic applications; heavy duty, qty: 250
404-18-25for robotic applications; standard duty, qty: 25
404-18for robotic applications; standard duty, qty: 100
404-26-25for semi-automatic applications; heavy duty, qty: 25
404-26for semi-automatic applications; heavy duty, qty: 100
404-26-250for semi-automatic applications; heavy duty, qty: 250
404-18-25for semi-automatic applications; standard duty, qty: 25
404-18for semi-automatic applications; standard duty, qty: 100

TOUGH LOCK Retaining Heads; Thread-On

For New Style Thread-On Nozzles

Part NumberDescription
404-52Dual taper retaining head for robotic applications; heavy duty, qty: 10
404-52-25Dual taper retaining head for robotic applications; heavy duty, qty: 25

Compatible Liners

Family of three QUICK LOAD liners with liner retainers
QUICK LOAD® Liners
Set of two Tregaskiss conventional liners for MIG welding guns
Liners for Aluminum Wire
Coiled conventional liner shown from top at 45-degree angle
Tregaskiss® Conventional Liners
Cutaway of a jump liner installed inside a MIG gun
Jump Liners
Family of color-coded Bernard conventional liners
Bernard® Conventional Liners

QUICK LOAD® Liners

Part NumberDescription
415-23-15Qfor 0.023″ wire, 15′ length; high carbon steel – round wound; replaces conventional liner 415-23-15
415-30-6Qfor 0.030″ wire, 6′ length; high carbon steel – round wound; replaces conventional liner 415-30-6
415-30-15Qfor 0.030″ wire, 15′ length; high carbon steel – round wound; replaces conventional liner 415-30-15
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
415-564-6Qfor 1/16″ – 5/64″ wire, 6′ length; high carbon steel – round wound; replaces conventional liner 415-564-6
415-564-15Qfor 1/16″ – 5/64″ wire, 15′ length; high carbon steel – round wound; replaces conventional liner 415-564-15
415-564-25Qfor 1/16″ – 5/64″ wire, 25′ length; high carbon steel – round wound; replaces conventional liner 415-564-25
415-332-6Qfor 0.078″ – 3/32″ wire, 6′ length; high carbon steel – round wound; replaces conventional liner 415-332-6
415-332-15Qfor 0.078″ – 3/32″ wire, 15′ length; high carbon steel – round wound; replaces conventional liner 415-332-15
415-332-25Qfor 0.078″ – 3/32″ wire, 25′ length; high carbon steel – round wound; replaces conventional liner 415-332-25

QUICK LOAD Liner Retainers

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

Part NumberDescription
415-24*for 0.078″ – 3/32″ wire
415-26*for 0.030″ – 5/64″ wire
415-37**for 0.030″ – 5/64″ wire

Tregaskiss® Conventional Liners

For use with Tregaskiss robotic and automatic MIG guns

Part NumberDescription
415-23-15for 0.023″ wire, 15′ length; high carbon steel – round wound
415-30-6for 0.030″ wire, 6′ length; high carbon steel – round wound
415-30-15for 0.030″ wire, 15′ length; high carbon steel – round wound
415-35-6for 0.035″ – 0.045″ wire, 6′ length; high carbon steel – round wound
415-35-10for 0.035″ – 0.045″ wire, 10′ length; high carbon steel – round wound
415-35-15for 0.035″ – 0.045″ wire, 15′ length; high carbon steel – round wound
415-35-25for 0.035″ – 0.045″ wire, 25′ length; high carbon steel – round wound
415-116-6for 0.045″ – 1/16″ wire, 6′ length; high carbon steel – round wound
415-116-10for 0.045″ – 1/16″ wire, 10′ length; high carbon steel – round wound
415-116-15for 0.045″ – 1/16″ wire, 15′ length; high carbon steel – round wound
415-116-25for 0.045″ – 1/16″ wire, 25′ length; high carbon steel – round wound
415-564-6for 1/16″ – 5/64″ wire, 6′ length; high carbon steel – round wound
415-564-15for 1/16″ – 5/64″ wire, 15′ length; high carbon steel – round wound
415-564-25for 1/16″ – 5/64″ wire, 25′ length; high carbon steel – round wound
415-332-6for 0.078″ – 3/32″ wire, 6′ length; high carbon steel – round wound
415-332-15for 0.078″ – 3/32″ wire, 15′ length; high carbon steel – round wound
415-332-25for 0.078″ – 3/32″ wire, 25′ length; high carbon steel – round wound

Bernard® Conventional Liners

For use with Bernard BTB and all legacy Q-Gun™, S-Gun™ and T-Gun™ semi-automatic air-cooled MIG guns

Liner Color:
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

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

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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.