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Black cylindrical hole saw with integrated hex shank and bi-metal teeth

Bosch HTW138 1-3/8 in. Edge Impact Tough Hole Saw

SKU CH-4V4Z-35ZT6

Bi-metal 8-TPI teeth cut sheet metal cleanly with a depth stop and automatic plug ejection, while the one-piece ¼ in. hex shank fits most drills and impactors

  • Size/Dimensions8
  • Compatibility/Fitment1-3/8 In. Edge™ Impact Tough™ Hole Saw, HTW138
  • Selling UnitCount, 1
  • Color/FinishBlack
  • Item Count1, Count
  • PartsSee Manufacturer's Website
  • 2× longer life than standard impact-rated hole saws
  • Bi-metal 8-TPI teeth cut cleanly through sheet metal
  • Depth stop prevents breakthrough for accurate holes
  • Spring-loaded pilot bit ejects the plug automatically
  • One-piece design needs no separate arbor or pilot bit

1-3/8 Inch Impact Hole Saw

The Bosch HTW138 is a 1-3/8 inch Edge Impact Tough hole saw built for high-torque impact drivers. Its bi-metal 8-TPI teeth are engineered for clean, fast cuts in sheet metal. The integrated one-piece design removes the need for a separate arbor or pilot bit. It delivers up to 2x life versus standard impact-rated hole saws.

1/4 Inch Hex Shank Compatibility

Verify that your drill or impact driver accepts a 1/4 inch hex shank before ordering. The tool is hand-powered and requires no batteries or external power source. Ensure the workpiece material suits bi-metal cutting teeth for optimal results. The built-in depth stop helps prevent breakthrough during drilling.

Sheet Metal Trades and Maintenance

This hole saw suits electricians, HVAC technicians and metal fabricators who need repeatable holes in sheet metal. The pilot bit spring provides automatic plug ejection for faster workflow. It is not intended for wood, masonry or thick plate steel cutting. Buyers needing larger diameters or arbor-based systems should look at other options.

Highlights

  • 2× longer life than standard impact-rated hole saws
  • Bi-metal 8-TPI teeth cut cleanly through sheet metal
  • Depth stop prevents breakthrough for accurate holes
  • Spring-loaded pilot bit ejects the plug automatically
  • One-piece design needs no separate arbor or pilot bit

Specifications

BrandBOSCH
Model1-3/8 In. Edge™ Impact Tough™ Hole Saw, HTW138
Size/Dimensions8
Compatibility/Fitment1-3/8 In. Edge™ Impact Tough™ Hole Saw, HTW138
Selling UnitCount, 1
Color/FinishBlack
Item Count1, Count
PartsSee Manufacturer's Website
LaborSee Manufacturer's Website
Part NumberHTW138

Questions about this item

Does the HTW138 hole saw include a pilot bit or arbor, or must they be purchased separately?

The integrated one-piece design means no separate arbor or pilot bit is required; the saw ships as a single unit ready to use.

Which size is the HTW138 and what material is it designed to cut?

The HTW138 is a 1-3/8 in. hole saw with bi-metal 8-TPI teeth engineered for optimal cutting in sheet metal.

How does the 2x life claim translate when the saw is used in a high-torque impact driver?

The durable design delivers twice the life of standard impact-rated hole saws, and the depth stop helps prevent breakthrough for accurate hole depth.

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