Model 39-3F Alternate Fuels Cutting Attachment

Model 39-3F Alternate Fuels Cutting Attachment


Model 39-3F cutting attachment for use with alternate fuels*


Model 39-3F is a classic design Harris cutting attachment with brazed triangular stainless steel tubes, making it light in weight but still providing exceptional strength and rigidity. The captive union nut protects the seats and O-rings from damage. It features a fold-forward cutting lever allowing easier connection, even with gloves on. The ease-on cutting valve provides smoother controlled starts. The forged solid brass head provides years of safe, dependable service, even under the most abusive conditions. This model also features a unique low pressure injector mixing system for the hottest preheat flame and the most efficient use of alternate fuels. Cuts up to 4 in. (101.6mm) plate. Alternate fuels include propylene or propane-based fuels and natural gas. NOT FOR USE WITH ACETYLENE.


  • Medium duty UL listed cutting attachment for use with alternate fuels
  • F-injector or low pressure mixing system for hottest preheat flame and most efficient gas usage
  • Triangular tube design is compact and lightweight with exceptional strength and rigidity while the brazed connections prevent leaks
  • Protected torch union nut protects seats and O-rings from abuse and damage
  • Fold-forward brass cutting lever for convenience and ease of operation
  • Ease-on cutting valve for safety, smoother starts and more precise cutting control
  • Solid forged brass head resists abuse and distortion for reliable performance and longer service life
  • Cuts up to 4 in. (101.6mm)
  • Length is 10 1/4 in. (260.3mm)
  • Head angle is 70◦


Warning -

Cancer and Reproductive Harm -

Warranty Information

  • 1 Year

What's Included

  • Model 39-3F Alternate Fuels Cutting Attachment



Certification UL® listed
Compatible Cutting Tip Model Number - Alternate Fuel (Size) 6290-NX, 6290-NXP, 6290-NFF
Compatible Handle Model Number 85
Cutting Capacity Up to 4 in. (101.6mm) plate
Duty Medium
Gas / Gas Service Natural Gas
Head Angle 90°
Mixer Type F-injector or low pressure
Torch Length 10-1/4 in. (260.3mm)


Warranty 1 Year