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PT-27HDA Powder-Actuated Heavy-Duty Stud Driver


The PT-27HDA is a low-velocity, heavy-duty powder-actuated tool designed for installing fasteners into poured and precast concrete, grout-filled concrete masonry block and horizontal grouted joints, as well as structural steel. This tool offers easy-cycling, single-shot firing action for continuous use, high reliability and low maintenance. The PT-27HDA features a spall suppressor, which reduces concrete spalling and helps keep the tool perpendicular to the work surface.

Key Features

  • Heavy-duty stud driver for installing fasteners into steel or hard concrete
  • Easy cycling – pulling on the barrel ejects the shell and resets the piston
  • Low recoil for greater operator comfort
  • Spall suppressor to reduce concrete spalling and keep tool perpendicular to work surface
  • Consistent and reliable performance
  • Easy disassembly for cleaning and maintenance


  • Fastener length: 5/8" through 3"
  • Fastener types: 1/4" – 20-threaded studs, 3/8" – 16-threaded studs, 8 mm-headed fasteners and 0.300"-headed fasteners with 0.157" shank diameter
  • Firing action: Single shot
  • Load caliber: 0.27 long single loads, yellow through purple (levels 3–6)
  • Length: 14 1/2"
  • Weight: 8 lb., 13 oz.


  • 3/8" sprinkler fastenings
  • Heavy-duty fastening in concrete strengths up to 8,000 psi
  • Structural steel

Product Includes

PT-27HDA is sold in a durable box complete with:

  • Operator’s manual
  • Spall suppressor
  • 8 mm fastener guide and pistons for use with PDPA, PSLV4 and PHN pins
  • 10 mm fastener guide and pistons for use with PSLV3 pins
  • Safety glasses / ear plugs
  • Tool lubricant
  • Cleaning brushes
  • Operator’s exam and caution sign
  • 2 extra stop rings
Model Number Description
PTHDA-700320 8 mm Piston
PTHDA-700340 8 mm Guide Assembly
PTHDA-700310 10 mm Piston
PTHDA-700330 10 mm Guide Assembly
PTHDA-700302 Stop Ring / Buffer

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