PRODUCT CHANGE — CONE NUT AND END FITTING ON BERNARD® BTB MIG STRAIGHT HANDLE MIG GUNS WITH HYTREL® POLYMER CABLE — EFFECTIVE JANUARY 3, 2023
Our product offering is regularly assessed to ensure focus on customer needs and opportunities to innovate our product portfolio, so we can continue to deliver sustainable value to our customers.
Starting 1/3/2023, there will be part number changes to the cone nut/end fitting found on Bernard BTB straight handle MIG guns with Hytrel polymer cable. Note that although the parts will look different, the functionality remains the same. These part number changes are also reflected in the current BTB MIG Gun Owners Manual.
| Current Part Number | New Part Number | Type |
| 308 | 1680087 | End Fitting |
| 408T | 1680088 | End Fitting |
| 409 | 1540003 | Cone Nut |
| 509 | 1540004 | Cone Nut |
| 608-1 | 1680089 | End Fitting |
| 609 | 1540004 | Cone Nut |
Should you have any questions or need further assistance, please contact your local ITW representative.
BERNARD DISCONTINUED PRODUCT — EFFECTIVE AUGUST 1, 2022
BERNARD DISCONTINUED PRODUCT — EFFECTIVE AUGUST 1, 2022
August 1, 2022
Bernard has discontinued the sales of the Q150 semi-automatic air cooled MIG guns as of August 1, 2022.
Click here for a list of discontinued part numbers.
Replacement MIG gun options would be a configured Bernard® BTB 200 amp or TGX 180 amp MIG gun.
If you have any questions regarding this change, contact your local ITW representative.
BERNARD MIG GUN BUILD CHANGE — EFFECTIVE AUGUST 1, 2022
BERNARD MIG GUN BUILD CHANGE — EFFECTIVE AUGUST 1, 2022
July 26, 2022
In an effort to speed assembly time, we will stop installing the contact tip and nozzle on all MIG guns. Diffuser and liner will be installed.
- Contact tip and nozzle will be packaged separately in a bag and shipped in the box with all Bernard® MIG guns
- Refer to the Owner’s Manual provided in the MIG gun box for consumable installation instructions or visit our support page to locate your specific gun Owner’s Manual
Should you have any questions or need further assistance, please contact your local ITW representative.
DISCONTINUED PRODUCTS — Various Part Numbers
DISCONTINUED PRODUCTS — Various Part Numbers
October 23, 2020
Effective December 31, 2020, we will be discontinuing a variety of part numbers due to low demand and sales volume. A majority of these items are configured MIG gun part numbers and special products.
Please refer to the appendix for the list of affected part numbers.
PACKAGING CHANGE — Formatting Changes to Owner’s Manuals
PACKAGING CHANGES —
Formatting Changes to Owner’s Manuals
August 18, 2020
Customers may notice that some Tregaskiss® and Bernard® MIG welding product owner’s manuals look different than previous versions. This is because we recently refreshed the design and format of these product manuals, but their contents remain the same. No changes to the important installation, maintenance, troubleshooting, parts lists and other information and instructions have been made.
Bernard Owner’s Manuals
Tregaskiss Owner’s Manuals
The most current version of these newly formatted owner’s manuals, along with other product manuals and spec sheets, are available for download from our website from the respective product pages as well as the Spec Sheets and Owner’s Manuals page.
Printed inventory will be replaced as a running change.
DISCONTINUED PRODUCT – BTB MIG Gun 500 amp B Series Handle Option
DISCONTINUED PRODUCT –
BTB MIG Gun 500 amp B Series Handle Option
August 1, 2019
To continue delivering sustainable value to our customers, we regularly assess our product offering to ensure focus and opportunities to innovate our product portfolio. Accordingly, due to low demand, we are discontinuing the 500 amp B Series Handle option from our BTB MIG gun offering.
Effective August 16, 2019, the following part numbers will no longer be available:
- 4422B (trigger kit)
- 4522 (trigger kit, locking)
- 4408 (handle kit)
Please note that a comparable replacement is the O Series Handle option, which is also configurable in our BTB MIG gun product line.
Learn more about Bernard® BTB MIG guns and available options, or configure a BTB MIG gun.
January 8, 2019 Our product offering is regularly assessed to ensure focus on customer needs and opportunities to innovate our product portfolio, so we can continue to deliver sustainable value to our customers. Accordingly, due to low demand, the following products will be discontinued: Effective January 8, 2019, all legacy F-Gun MIG gun part numbers and all F-Gun series service parts will be discontinued and no longer available for sale. The following 600 amp Bernard® BTB semi-automatic air-cooled MIG gun models (with T series straight handles and locking triggers) are recommended replacement options:
March 9, 2018 We are proud to announce that effective immediately, you will notice some important changes to the Bernard® fume extraction MIG gun offering. Bernard FILTAIR™ fume extraction MIG guns are transitioning under the Clean Air™ brand name and will become our Bernard® Clean Air™ curved handle series fume extraction MIG guns. This product transition offers improved functionality, performance and ease of maintenance. Learn more about Bernard Clean Air fume extraction MIG guns or click here to configure your gun online.
November 30, 2017 Effective immediately, all 8- and 12-foot length options in the BTB semi-automatic air-cooled MIG gun product lineup will be discontinued. BTB MIG guns will continue to be available in lengths of 10-, 15-, 20- and 25-feet. No other configurable options have been affected by this change. View available options or configure a BTB MIG gun today!
March 16, 2017 Bernard is pleased to announce that we have added a 300 amp model to our Clean Air™ fume extraction MIG gun offering. Reduce smoke at the source with an industrial-duty fume extraction gun that is comparable in size and weight to a regular welding gun. Click here to learn more about the Clean Air fume extraction MIG gun.
December 16, 2016 Bernard has changed the finish on all Clean Air™ fume extraction gun vacuum tubes and chambers from chrome to black. Effective immediately, all new guns, replacement vacuum tubes and replacement chambers will have the new darker finish. This change is purely aesthetic, and has no impact on performance, part numbering or price. Click here for more information about the Clean Air™ fume extraction gun.
The new C series straight handle expands our handle offering from six to seven options within our Bernard BTB MIG gun configurator. This new handle provides all the same benefits as our current T series straight handle, plus additional enhancements such as comfortable handle overmolding and an ergonomic rear swivel. Click here to learn more about the new C series straight handle.
November 23, 2015 Bernard has redesigned the trigger control plug housing on located on the rear strain relief as well as the trigger control plug connection on BTB MIG guns. This change provides an internal connection which is more durable and also allows the strain relief to fit more easily into various feeders from major manufacturers. The double-life MIG gun system also known as the “flip-flop” for T series straight handles is still compatible with this change. Did any part numbers change? Answer: Yes, part numbers have changed. Please reference the charts below for new part numbers for the trigger control plug housing and trigger control plugs. Please see the chart below for trigger control part numbers based on the gun model. Example: Q2015AB8CMC How can you tell the difference between the old version and the new 2015 design?
Effective April 30, 2015 Miller Electric Mfg. Co. discontinued the Roughneck® C-Series MIG gun series and replaced them with Bernard® BTB semi-automatic air-cooled MIG guns. Miller Electric will continue to offer consumables and replacement parts for the Roughneck C-Series MIG guns. Please see the cross reference chart below to find the replacement Bernard BTB MIG gun part numbers for the Roughneck C-Series MIG guns: Q3010TE5EMC 12 ft (3.7 m) C-3015 Q3015TE5EMC Q4010TE5EMC C-4012 Q4012TE5EMC 194756 194757 S5010GH5IMC 10 ft (3 m) 194758 C-5012 S5015GH5IMC Certain products are only available for purchase from Miller Electric while others are available from either Miller Electric or Bernard. Please see the reference chart below which indicates where you can place an order for the guns, parts and consumables: PRODUCT WHERE TO BUY FasTip™ Consumables Miller Electric Mfg. Co. Quik Tip™ Consumables Miller Electric Mfg. Co. or Bernard Roughneck® Replacement Parts Miller Electric Mfg. Co. Bernard BTB MIG Guns Miller Electric Mfg. Co. or Bernard Bernard BTB MIG Gun Replacement Parts Miller Electric Mfg. Co. or Bernard To place an order through Miller Customer Service: please contact us via phone: 866-931-9730, fax: 800-637-2315 or email orders@millerwelds.com To place an order through Bernard Customer Service: please contact us via phone: 1-855-MIGWELD (644-9353), fax: 888-946-67-26 or email cs@itwmig.com If you are unable to find the answer you are seeking in the following FAQs, please contact the Miller and Bernard Customer Service Teams. 1. Q: Can I use Miller FasTip™ Consumables on the replacement Bernard BTB MIG Guns? A: Although we recommend the use of Bernard Quik Tip™ Consumables, users can install the FasTip diffuser on Bernard Best of the Best BTB MIG Guns and use FasTip Consumables (contact tips, nozzles). Users will need to order a neck insulator part # 4523R for use on Bernard BTB MIG Guns when using FasTip Consumables. Please use the FasTip consumable chart below as a reference: Contact Tip* M206188 M206190 Diffuser M206195 Nozzle M198855 M199618 Insulator 4523R * Based on wire size range 0.045″ – 1/16″ 2. Q: Can I use Miller Roughneck Liners on Bernard BTB MIG Guns? A: No, Users will need to order Bernard Universal Conventional Liners for Bernard BTB MIG Guns. Miller Roughneck Liners are not compatible on Bernard BTB MIG Guns. 3. Q: Can I use Bernard™ Quik Tip™ Consumables on existing Roughneck MIG Guns? A: Yes, the Quik Tip Consumable Series (contact tip, diffuser, nozzle) can be installed on Miller Roughneck MIG Guns. Users will need to order neck insulator part # 10012 to use on their Roughneck MIG Gun when using Bernard Quik Tip Consumables. Please use the consumable chart below as a reference: Contact Tip* T1045 T1116 Diffuser D118Q D114Q Nozzle N1C58Q N1C34HQ Insulator 10012 *Based on wire size range 0.045″ – 1/16″ 4. Q: Can I use Bernard Universal Conventional Liners on existing Roughneck MIG Guns? A: No, Users will still need to order Miller Roughneck Liners for existing Roughneck MIG Guns. Bernard Universal Conventional Liners are not compatible with existing Roughneck MIG Guns. 5. Q: Why does my Miller FasTip diffuser not thread on correctly to a Bernard BTB MIG Gun? A: A change to the thread on the FasTip diffuser was made on February 13, 2015 to be compatible with Bernard BTB MIG Guns. The new style diffuser has a large Miller logo roll mark compared to the old style diffuser that has a small Miller logo rollmark. To differentiate between the old and new style diffusers please see the comparison images below: 6. Q: How does a Miller Roughneck Gun compare to a Bernard BTB MIG Gun? A: Please see full gun comparison images below of the Roughneck C-Series MIG Gun (bottom) and Bernard BTB MIG Gun (top):
Bernard has transitioned these products to a new supplier! Customers can contact Hopkin Manufacturing directly to place orders for these products. Hopkin Manufacturing: +1-800-524-1458 | hopkinsmfg.com
Learn more on the Clean Air™ fume extraction gun product page
Although no new neck insulators are being introduced due to implementation of the BTB semi-automatic air-cooled MIG gun platform on June 2, 2014, users should be aware that neck insulator replacement for these guns will be based on several variables including: Please use the following chart when selecting the appropriate replacement neck insulator:
New BTB platform MIG guns, launching on June 2, 2014, will feature a common straight rear strain relief (shown right) on almost all configurations. This straight rear strain relief was originally introduced on Tregaskiss TOUGH GUN semi-automatic MIG guns and allows expansion or maintenance of several key features: Only BTB platform guns configured with Bernard or Euro power pins will incorporate the black clamshell rear strain relief originally introduced on Bernard Q-Gun and S-Gun MIG Guns. This rear strain relief is also now covered by the same Lifetime Warranty offered on the straight rear strain relief (above) for BTB platform guns. Please note the following liner compatibility:
Please note that not all Bernard necks will have this new dual thread. Necks that will NOT have the new dual thread include: There is a subtle difference to the appearance of the threads on the necks as shown below: Please click here for more details on necks offered through the BTB MIG gun platform. The Bernard necks spec sheet can be downloaded in PDF format by clicking here.
Beginning on June 2, 2014, Bernard’s new BTB MIG gun platform brings our Q-Gun™, S-Gun™ and T-Gun™ MIG Guns into a single gun line and single configurator. To combine the gun lines, it was necessary to standardize the back ends of all BTB MIG guns with the straight rear strain relief found on Bernard® T-Gun™ MIG guns (formerly Tregaskiss® TOUGH GUN® semi-automatic MIG guns). Similarly, the Tregaskiss power pins that mate with the T-Gun series have now been adopted with some slight modifications as the Bernard power pins for both Bernard semi-automatic and Tregaskiss robotic MIG guns. The slight modifications include a new overall hex shape (see image on right) and fixed gas barbs. Bernard MIG gun lines that are compatible with these pins include: Due to the expanded compatibility of these pins, some distributors and end users will be able to reduce inventories of Bernard replacement parts. For additional information on power pin kits and power pins, please click here to access the spec sheets in PDF format.
B Series Small Curved Handle B Series Large Curved Handle O Series Small Curved Handle O Series Large Curved Handle T Series Small Straight Handle T Series Large Straight Handle C Series Straight Handle Please note that all handle and trigger combinations previously offered continue to be available within the BTB MIG gun platform. To view a summary of trigger options and other features by handle, please click here. .
Along with the new Bernard® semi-automatic MIG guns BTB platform launching on June 2, 2014, Bernard is pleased to announce the launch of the improved Q-Nut used on all Bernard rotatable necks. It has been completely redesigned to offer a significant increase in durability. Please note that the new silicone ring, Q-Nut cover and silicone insulator are now installed from the back of the neck instead of the front. “How to install the new Q-Nut” instructions are available on our website in the How-To Guides and Videos area of our Technical Support section. Please click here to access this How-To article.
Former Q-Gun™ and S-Gun™ MIG guns will require an additional character added to the end of the existing part numbers to allow for new liner selection options. Former T-Gun™ semi-automatic air-cooled MIG guns will be adopting Q-Gun style part numbering for consistency across all guns within the new single configurator. Example old and new part numbers are shown below: Q-Gun MIG Guns Q4015GE8CM Q4015GE8CMC S-Gun MIG Guns S3012TF5CM S3012TF5CMC T-Gun MIG Guns M3010-35 Q3010MP3CMC For a limited time from June 2 until August 1, 2014, both old and new part numbers will be supported in our system to allow our distribution partners to update their computer systems. To assist our customers in converting old gun part numbers to new Best of the Best Platform part numbers, we have created an online conversion tool. To populate the data in the tool, Q-Gun, S-Gun and T-Gun MIG Gun part numbers configured between April 2011 and April 2014 were pulled and converted to the new part numbering system. Click here to access this conversion tool.
We have added internal stops to all Centerfire™ and Quik Tip™ diffusers to improve alignment between the liner and contact tip for enhanced wire feedability. This product improvement is being implemented as a running change. The new internal stop inside Centerfire and Quik Tip diffusers prevents the liner from going all the way through the diffuser, therefore changing how liners need to be installed. Liner installation will now require the removal of the diffuser. Please note that trim lengths will also be affected. See product insert INS-DIFF for more information. How can I tell the difference between Centerfire and Quik Tip diffusers with the NEW internal stop vs. the original style Centerfire and Quik Tip diffusers? To help distinguish Centerfire diffusers (shown below, left) with the new internal stop, users can check the orientation of the roll mark. In original style diffusers, the roll mark is readable when the tip end is at the top. In diffusers with the new internal stop, the roll mark is readable when the neck end is at the top. To distinguish Quik Tip diffusers (shown above, right) with the new internal stop, users can check the roll mark. In the original style diffusers, the roll mark has one Bernard starburst stamped before the part number. In diffusers with the new internal stop, the roll mark has a Bernard starburst stamped before AND after the part number. For both Centerfire and Quik Tip diffusers, a second simple method to check for an internal stop would be to insert a liner into the diffuser. If the liner will not pass all the way through the diffuser, then an internal stop is present. Please note that it is important to understand which diffuser you are using as this affects liner trim length during replacement. Please refer to the insert inside of your diffuser bag or click here for additional information about liner replacement and trim length details.
DISCONTINUED PRODUCT – Legacy F-Gun MIG Guns and Service Parts
DISCONTINUED PRODUCTS –
Legacy F-Gun MIG GunsLegacy F-Gun™ MIG Guns
Affected Part Numbers
Part Number Description 4610 F-Gun MIG Gun, 10 ft 4615 F-Gun MIG Gun, 15 ft 4610E F-Gun MIG Gun, 10 ft, Euro 4615E F-Gun MIG Gun, 15 ft, Euro 4610M F-Gun MIG Gun, 10 ft, Miller® 4615M F-Gun MIG Gun, 15 ft, Miller 4610L F-Gun MIG Gun, 10 ft, Lincoln® 4615L F-Gun MIG Gun, 15 ft, Lincoln 4610T F-Gun MIG Gun, 10 ft, Tweco® 4615T F-Gun MIG Gun, 15 ft, Tweco 408 Handle, F-Gun Series 4627 Neck, F-Gun Series 429 Trigger, F-Gun Series
Replacement Options
Legacy F-Gun MIG Gun Part Number Replacement BTB MIG Gun Part Number 4610 Q6010NU3LBC 4615 Q6015NU3LBC 4610M Q6010NU3LMC 4615M Q6015NU3LMC 4610L Q6010NU3LLC 4615L Q6015NU3LLC 4610T Q6010NU3LTC 4615T Q6015NU3LTC PRODUCT UPDATE – Changes to the Bernard Fume Extraction MIG Gun Offering
PRODUCT UPDATE –
Changes to the Bernard Fume Extraction MIG Gun Product OfferingFeatures and Benefits:
Additional Changes:
DISCONTINUED PRODUCT – 8 and 12 foot BTB MIG Gun Lengths
DISCONTINUED –
8′ and 12′ BTB MIG Gun Lengths
PRODUCT UPDATE – 300 amp Clean Air Fume Extraction MIG Gun Now Available
PRODUCT UPDATE –
300 amp Clean Air Fume Extraction MIG Gun Now Available
Features and Benefits
PRODUCT UPDATE – Clean Air Gun Vacuum Tube and Chamber Finish Change
PRODUCT UPDATE –
Clean Air Gun Vacuum Tube and Chamber Finish Changes
NEW PRODUCT – C Series Handle Option for BTB MIG Guns
NEW PRODUCT –
C Series Handle Option for BTB MIG GunsNew C Series Straight Handle
PRODUCT IMPROVEMENT – Trigger Control Plug Housing
PRODUCT IMPROVEMENT –
Trigger Control Plug Housing on BTB MIG Guns
Frequently Asked Questions
Trigger Control Plug Housing Description Old Part Number New Part Number Standard – B & O Series Handles 416-5 1810053 Standard – T Series Straight Handle 416-5 1810052 Dual Schedule 416-13 1810054 Power Pin Old Part Number New Part Number B (Bernard®) N/A N/A E (Euro) N/A N/A L (Lincoln®) 419-6 SCL2N M (Miller®) 419-4 Trigger control plug housing includes trigger control plug O (OXO™) 419-7 SCX1N S (Tweco® #4 – Lincoln Lead) 419-6 SCL2N R (Tweco® #4 – Miller Lead) 419-4 Trigger control plug housing includes trigger control plug T (Tweco® #4 – Standard Lead) 419-8 SCT1N U (Tweco® #4 – NAS Plug) 419-7 SCX1N W (Tweco® #5 – Standard Lead) 419-8 SCT1N X (Tweco® #5 – Miller Lead) 419-4 Trigger control plug housing includes trigger control plug
Answer: New 2015 design will have an internal connection. See Figure below: 
DISCONTINUED PRODUCT – Roughneck MIG Guns
DISCONTINUED PRODUCTS –
Miller Roughneck C-Series MIG GunsMiller Stock Number Roughneck Gun Model Number Bernard BTB MIG Gun Replacement Part Number Gun Length 194751 C-3010 10 ft. (3 m) 194752 C-3012 Q3012TE5EMC 194753 15 ft (4.6 m) 194754 C-4010 10 ft. (3 m) 194755 12 ft. (3.7 m) C-4015 Q4015TE5EMC 15 ft (4.6 m) C-5010 S5012GH5IMC 12 ft. (3.7 m) 194759 C-5015 15 ft. (4.6 m) Where To Order
Frequently Asked Questions (FAQs)
FasTip Consumables 300 amp 400 amp 500 amp Quik Tip Consumables 300 amp 400 amp 500 amp 
DISCONTINUED PRODUCT – Manual Products
DISCONTINUED PRODUCT –
Manual Products: Cable Connectors, Lugs and SplicersAs of August 4, 2014, the manual product line (cable connectors, lugs and splicers) from Bernard has been discontinued.
NEW PRODUCT – Bernard Clean Air Fume Extraction Gun
NEW PRODUCT –
Bernard Clean Air Fume Extraction GunNew Clean Air™ Fume Extraction Series
Reduce smoke at the source with an industrial-duty fume extraction gun that is comparable in size and weight to a regular welding gun.
PRODUCT UPDATE – Neck Insulators for BTB MIG Guns
PRODUCT UPDATE –
Neck Insulator Selection for BTB MIG Guns
Neck / Handle Consumables Insulator Part Number 200A 300A 400A 500A 600A Fixed neck for T series handles TOUGH LOCK® 402-11 Quik Tip™ 4423R Centerfire™ 4323R 4423R Rotatable neck for O, B, T series handles TOUGH LOCK 10012 Quik Tip 4423R Centerfire 4323R 4423R Fixed necks for O, B series handles TOUGH LOCK 10012 Quik Tip 4423R Centerfire 4323R 4423R PRODUCT UPDATE – Common Straight Rear Strain Relief for BTB MIG Guns
NEW PRODUCT –
Common Straight Rear Strain Relief for the BTB MIG Gun Platform
Exceptions: Black Clamshell Rear Strain Relief with Bernard and Euro Power Pins
PRODUCT IMPROVEMENT – Dual Thread Necks for BTB MIG Guns
PRODUCT IMPROVEMENT –
Dual Thread Necks for BTB MIG Guns
Beginning on June 2, 2014, Bernard’s new BTB MIG gun platform brings our Q-Gun™, S-Gun™ and T-Gun™ semi-automatic air-cooled MIG guns into a single gun line and single configurator. As a part of this launch, all fixed and rotatable necks offered through the new BTB MIG gun configurator will now feature a dual thread that allows the installation of your choice of consumables – TOUGH LOCK®, Centerfire™ or Quik Tip™ – without the need for special adaptor parts.How can I tell the difference between single and dual thread necks?
PRODUCT CHANGE – Bernard Power Pins
PRODUCT CHANGE –
Bernard Power Pins
PRODUCT UPDATE – New Handle Names for the BTB MIG Gun Platform
PRODUCT UPDATE –
New Handle Names for the BTB MIG Gun Platform
Beginning on June 2, 2014, Bernard’s new Best of the Best Platform brings our Q-Gun™, S-Gun™ and T-Gun™ semi-automatic air-cooled MIG guns into a single gun line and single configurator. Since we now have six gun handle styles within a single configurator, we have developed the following naming scheme for our handles per the chart below:
PRODUCT IMPROVEMENT – Q-Nut for BTB MIG Guns
PRODUCT IMPROVEMENT –
Improved Q-Nut Launching with the BTB MIG Gun Platform
SYSTEM UPDATE – New Gun Part Numbers for BTB MIG Guns
SYSTEM UPDATE –
New Gun Part Numbers for BTB MIG Gun PlatformAll Bernard Semi-Automatic Air-Cooled MIG Guns under the new BTB Platform will have new part numbering as of June 2, 2014.
Gun Line Old Part Number New Part Number PRODUCT UPDATE – New Internal Stop in Centerfire and Quik Tip Diffusers
PRODUCT UPDATE –
New Internal Stop in Centerfire and Quik Tip Diffusers
What’s Changed?
Frequently Asked Questions
