90° Square Shoulder Inserts / APKT-Style Inserts

Dapra's Square Shoulder Inserts are APKT-style inserts that are offered in pressed, lapped and molded versions for a combination of economy and performance, with a broad selection of insert radii for varying corner requirements.

CNC Pressed Inserts

APET & XPET CNC Pressed Inserts

The most economical, high-performance inserts available!

  • APET and XPET inserts are manufactured using CNC press technology, providing reliable accuracy and repeatability.
  • Feature a high positive pressed cutting geometry for aggressive material removal rates and low horsepower consumption.
  • Have a strong edge preparation for heavy chiploads.
  • Are available in a large variety of corner radii with a true tangential blend.
  • Provide excellent surface finishes due to computer-designed wiper geometry.
  • Are economical and offer high-performance cutting capabilities.
  • APET inserts feature a high-strength cutting edge and are ideal for high-performance milling of most harder steels and cast irons.
  • XPET inserts are ideal for high-performance milling of stainless steels and nonferrous materials such as copper alloys and aluminum. Also good for gummy, softer, free-machining steels.
CNC Pressed Insert

• Stocked standard

o Available Summer 2007

XPET & APET Insert Sizes and Available Grades
Insert l w r Uncoated Coated
Pressed to Size DMP35
DMP30
DMK25		 DMP353
DMP303
DMP253		 DMP35-HP
DMP30-HP
DMP25-HP		 DMP357
DMP307
DMK257 		DMP35-GLH
DMP30-GLH
DMP25-GLH
APET inserts feature a high-strength cutting edge and are ideal for high-performance milling of most harder steels and cast irons.
APET100308 .380" .250" .031" • • • • •
APET100316 .380" .250" .062" • • • • •
APET160408 .625" .375" .031" • • • • •
APET160412 .625" .375" .047" • • • • •
APET160416 .625" .375" .062" • • • • •
APET160431* .625" .375" .120" • • • • •
NEW APET160464 .625" .375" .250" o o o o o
XPET inserts are ideal for high-performance milling of stainless steels and nonferrous materials such as copper alloys and aluminum. Also good for gummy, softer, free-machining steels.
XPET100308 .380" .250" .031" • • • • •
XPET100316 .380" .250" .062" • • • • •
NEW XPET160404 .625" .375" .015" • • • • •
XPET160408 .625" .375" .031" • • • • •
XPET160412 .625" .375" .047" • • • • •
NEW XPET160424 .625" .375" .094" DMP35 ONLY     DMP357 ONLY  
XPET160416 .625" .375" .062" • • • • •
XPET160431* .625" .375" .120" • • • • •
NEW XPET160464 .625" .375" .250" o o o o o

* This insert is designed for heavy roughing and has a corner radius that actually measures closer to .115" than .125" (.010" difference) due to distortion by the positive radial insert angle.

Lapped, Aluminum Cutting Inserts

XPET Lapped, Aluminum-Cutting Inserts

  • Ground and lapped rake face is ideally suited for machining aluminum and copper alloys, bronze, brass, etc. Built-up edge is virtually eliminated.
  • Positive rake angle is higher than standard inserts, providing highest shear possible.
  • Sharp cutting edge is configured specifically for cutting nonferrous materials, yielding the ultimate in low-torque material removal.
  • Variety of corner radii available with a true tangential blend.
  • Available standard in uncoated grade DMK25 only.

NEW PCD-tipped inserts provide the ultimate in wear resistance for high-volume aluminum or graphite milling. Available in 1/32" corner radius only.

Coated versions available upon request. Contact Dapra for details.

Lapped Insert

• Stocked standard

o Available Summer 2007

XPET Lapped, Aluminum-Cutting Inserts
Insert l w r Uncoated
Al, Ti, SS DMK25
XPET100308-ALU .380" .250" .031" •
XPET100316-ALU .380" .250" .062" •
NEW XPET160404-ALU .625" .375" .015" •
XPET160408-ALU .625" .375" .031" •
XPET160412-ALU .625" .375" .047" •
XPET160416-ALU .625" .375" .062" •
XPET160431-ALU* .625" .375" .120" •
NEW XPET160464-ALU .625" .375" .250" o

* This insert is designed for heavy roughing and has a corner radius that actually measures closer to .115" than .125" (.010" difference) due to distortion by the positive radial insert angle.


PCD-Tipped Inserts
Insert l w r PCD Length Uncoated
PCD-Tipped DMK25
NEW XPET160408-PCD-125 .625" .375" .031" .125" •
NEW XPET160408-PCD-225 .625" .375" .031" .225" •

Dapra 90° Square Shoulder products are made in the USA.