Contact Us

Thanks for visiting Stud Welding & Fastners. If you have any questions on a product or service, please contact us and a member of our team will respond in a timely manner.

TWI-375 – 3/8″ CAPACITY


TWi-375: 3/8″ Capacitor Discharge System

The TW-i series of capacitor discharge stud welders incorporates the latest solid state technology into a compact, light-weight, and rugged CD stud welder. This full line of equipment is capable of welding pins, cup head pins, and CD studs ranging from 14-gauge up to 3/8” full-flanged stainless steel studs.


TW-i 375 Manual

TWi Flyer



  • —NEW FEATURE— Intuitive Touchscreen Interface with Preset values for fast, accurate, and repeatable weld settings
  • —NEW FEATURE— Set-Point Discharge: Unit discharges directly to a new set point without needing to discharge completely
  • —NEW FEATURE— Universal Input Voltage: Plug and play, no need to re-tap the machine for 110V or 220V input voltages
  • —NEW FEATURE— Low input voltage capability enables operation with long extension cords
  • —NEW FEATURE— Contact and Trigger Indicators for fast troubleshooting of hand tool and weld cable maintenance issues
  • —NEW FEATURE— Thermal and Voltage protection indicators to protect the unit from damage due to overheating or poor input power
  • Rigid internal construction minimizes the possibility of components coming loose during rough handling or operations
  • Sheet metal is powder-coated for greater durability, texture, and appearance
  • Hand tool has been ergonomically designed to reduce operator fatigue for increased welding efficiency
  • Hand tool has an adjustable internal spring to apply the correct spring pressure for every welding application
  • Hand tool can be configured for B collets, collet inserts, Euro collets, or standard tapered chucks
  • The TWi-375 CD Unit weighs less than most other available models for ease of carrying.


TWi-375 Specifications

  • Size/Dimension: 14” L, 10.5” W, 11.5” H 356mm x 267mm x 292mm
  • Weight: 23.4 lbs.
  • Capacitance: 152,000µF
  • Weld Energy: 3040 Watt-seconds
  • Weld Range: 14 gauge through 3/8″ stainless
  • Duty Cycle: 10 studs per minute @ 3/8” settings
  • Primary Power: 85-250 VAC, 6.0-2.0A, 50/60Hz
  • 10A Fast Acting Fuse
  • Charge Voltage: 35-200 VDC
Additional Information
Weight 45 lbs
Dimensions 21 × 13 × 12 in