How to Set Up a Stud Gun for Welding Headed Concrete Anchors/Shear Connectors (Alternative Method)


This setup works for Truweld, Proweld, Midwest Fasteners, Image and Nelson NS20 stud welder heavy and medium duty guns.


Items Needed for Stud Gun Welding Thru Deck

STEP 1: Screw the Arc Gun Connector Stud into gun.  The shorter end of the stud is screwed into the gun.

Heavy Duty Arc Gun with Connector Stud

STEP 2: Slide the gun cable eyelet onto the Arc Gun Connector Stud.  Attach the Headed Anchor Chuck into Arc Gun Connector Stud.  Use 2 crescent wrenches to hold the Headed Anchor Chuck when tightening.  Make sure the eyelet stays centered or vertical when it is tightened so the eyelet won’t hang up on the legs later.

Arc Stud Gun with Headed Chuck

STEP 3: Screw the Arc Legs onto the Large Split Foot.

Arc Stud Gun Legs and Foot


STEP 4: Place the Heavy Duty Ferrule Grip in the Large Split Foot and tighten the set screws.

Heavy Duty Ferrule Grip Installed on Arc Foot

STEP 6: Place a stud in the Headed Anchor Chuck.

Arc Stud Gun with Headed Chuck and Stud

STEP 7: Slide the foot assembly into the gun so that a about 1" of the stud stick out past the Heavy Duty Ferrule Grip.  Make sure the flat side of the legs are towards the set screw on the gun.  Tighten the screws on the gun that hold the legs. 

Headed Studs Gun Adjust Legs

STEP 8: Adjust the Foot Assembly so that the stud is centered in the middle of the Heavy Duty Ferrule Grip.  Tighten the Arc Leg screws in the foot assembly.

Stud Centered in Heavy Duty Ferrule Grip

STEP 9: Put a ferrule on the end of the stud and make the plunge adjustment.  The plunge is the amount the stud that sticks out past the ferrule grip not including the flux ball. 

  • Loosen the leg screws in the gun.
  • Adjust the plunge.
  • Tighten the leg screws in the gun.

Plunge Definition for Welding Headed Studs

Stud Diameter

Plate, Direct to Beam or Angle Plunge

Weld Thru Deck Plunge

3/8” & 1/2

3/16” – 1/4"


5/8” & 3/4"

1/4” – 5/16”


7/8” & 1”

5/16” – 3/8”


Weld Thru Deck Recommendation on Determining the Right Plunge:

Grab another stud and slide the foot assembly so that the amount of the stud sticking out past the ferrule grip is equal to the head of the 2nd stud (3/8”).

 Weld Thru Deck Stud Welding Plunge Recomendation