Metric Square Shoulder Cutters and Inserts

Metric Series 90° Square Shoulder Mills

Dapra Corporation is now offering a series of high-performance METRIC SERIES Square Shoulder Mills and Inserts in the most commonly used sizes and styles. Contact Dapra today for pricing on these metric sizes. Click here for our standard Square Shoulder product line.

Metric Square Shoulder End Mills

d2 = shank diameter; l1 = overall length; l2 = effective length

Metric End Mill
Metric End Mills
Cutting Dia. (D) Holder Insert Length Flutes d2 l1 l2 Inserts
16mm SSEM16-16-R35-2 10mm 2 16mm 80mm 31mm APET1003.. / XPET1003..
20mm SSEM20-20-R35-2 10mm 2 20mm 90mm 39mm
25mm SSEM25-20-R35-4 10mm 4 20mm 90mm 39mm
25mm SSEM25-25-R55-2 16mm 2 25mm 100mm 44mm APET1604.. / XPET1604..
32mm SSEM32-32-R35-5 10mm 5 32mm 100mm 44mm APET1003.. / XPET1003..
32mm SSEM32-32-R55-3 16mm 3 32mm 100mm 44mm APET1604.. / XPET1604..
40mm SSEM40-32-R55-4 16mm 4 32mm 115mm 55mm

Standard Pitch Metric Square Shoulder Shell Mills

d2 = arbor diameter; l1 = overall height

Standard Pitch Metric Shell Mill
Standard Pitch Metric Shell Mills
Cutting Dia. (D) Holder Insert Length Flutes d2 l1 Mounting Screw Inserts
50mm SSSM50-22-R55-4 16mm 4 22mm 38mm M10 APET1604.. / XPET1604..
50mm SSSM50-22-R55-5 16mm 5 22mm 38mm M10
63mm SSSM63-27-R55-5 16mm 5 27mm 38mm M12
80mm SSSM80-27-R55-6 16mm 6 27mm 50mm M12

Metric APET & XPET CNC Pressed Inserts

Click here for more information on Dapra's APET and XPET CNC Pressed Inserts.

CNC Pressed Insert

• Stocked standard

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 10.0mm 6.4mm 0.8mm • • • • •
APET100316 10.0mm 6.4mm 1.6mm • • • • •
APET160408 16.0mm 9.5mm 0.8mm • • • • •
APET160412 16.0mm 9.5mm 1.2mm • • • • •
APET160416 16.0mm 9.5mm 1.6mm • • • • •
APET160431 16.0mm 9.5mm 3.0mm • • • • •
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 10.0mm 6.4mm 0.8mm • • • • •
XPET100316 10.0mm 6.4mm 1.6mm • • • • •
NEW XPET160404 16.0mm 9.5mm 0.4mm • • • • •
XPET160408 16.0mm 9.5mm 0.8mm • • • • •
XPET160412 16.0mm 9.5mm 1.2mm • • • • •
XPET160416 16.0mm 9.5mm 1.6mm • • • • •
XPET160431 16.0mm 9.5mm 3.0mm • • • • •

Metric XPET Lapped, Aluminum-Cutting Inserts

Click here for more information on Dapra's XPET Lapped, Aluminum-Cutting Inserts.

Coated versions available upon request. Contact Dapra for details.

Lapped Insert

• Stocked standard

XPET Lapped, Aluminum-Cutting Inserts
Insert l w r Uncoated
Al, Ti, SS DMK25
XPET100308-ALU 10.0mm 6.4mm 0.8mm •
XPET100316-ALU 10.0mm 6.4mm 1.6mm •
XPET160404-ALU 16.0mm 9.5mm 0.4mm •
XPET160408-ALU 16.0mm 9.5mm 0.8mm •
XPET160412-ALU 16.0mm 9.5mm 1.2mm •
XPET160416-ALU 16.0mm 9.5mm 1.6mm •
XPET160431-ALU** 16.0mm 9.5mm 3.0mm •

** This insert is designed for heavy roughing and has a corner radius that actually measures closer to 2.9mm than 3.2mm (.25mm difference) due to distortion by the positive radial insert angle.

APET & XPET Grade Selection
Shock & Wear Resistance Uncoated (Base Grade) with Coating Description Specifications
TOUGHEST
Shock Resistance		 DMP35 Extreme toughness for high-shock applications involving interrupted cuts, long tool overhang or very heavy cuts. ANSI C1, ISO P40, M30-M40
DMP353 DMP35 substrate with a PVD TiCN coating. Excellent resistance to cratering and flank wear for light roughing when increased feed is possible. Best suited to carbon and alloy steels or low- to medium-speed stainless steel applications
DMP35-HP High-performance medium-temperature grade. Optimum performance and wear resistance in most soft steels, soft stainless steels and cast iron.
DMP357 DMP35 substrate with a PVD AlTiN coating. Excellent resistance to oxidation for high-speed cutting when increased surface speed is possible. Good coating for tool steels, heat-treated materials and higher-speed stainless steel applications.
DMP35-GLH Premium high-temperature grade. Unbeatable performance and wear resistance in high-heat applications such as harder steels, tough stainless steels and high-temperature alloys.
MEDIUM
Shock and Wear		 DMP30 Tough and wear resistant. Optimum grades for high-speed machining of most steels. ANSI C5-C6, ISO P25-P35, M25-M35
DMP303 DMP30 substrate with our medium-temperature TiCN PVD coating; excellent for low-to-medium operating speeds where toughness and good wear resistance are expected.
DMP30-HP High-performance medium-temperature grade. Optimum performance and wear resistance in most soft steels, soft stainless steels and cast iron.
DMP307 DMP30 substrate with our high-temperature AlTiN PVD coating; use for high-speed machining, heavy roughing and semi-finishing applications.
DMP30-GLH Premium high-temperature grade. Unbeatable performance and wear resistance in high-heat applications such as harder steels, tough stainless steels and high-temperature alloys.
HARDEST
Wear Resistance		 DMK25 Highest wear resistance with reduced shock absorption capabilities. Micro-grain carbide provides excellent edge strength for abrasive applications in nonferrous materials. Suitable for castings, aluminum and smoother cuts in tough stainless steels and high-temperature alloys. ANSI C2-C3, ISO K10-K25
DMK253 DMK25 substrate with PVD TiCN coating. Excellent resistance to built-up edge in aluminum and copper alloys.
DMK25-HP High-performance medium-temperature grade. Optimum performance and wear resistance in most soft steels, soft stainless steels and cast iron.
DMK257 DMK25 substrate with PVD AlTiN coating. Appropriate for higher-temperature applications such as high-velocity cast iron machining, tougher stainless steels, high-temperature alloys and high-speed copper alloy machining. Excellent for hard milling.
DMK25-GLH Premium high-temperature grade. Unbeatable performance and wear resistance in high-heat applications such as harder steels, tough stainless steels and high-temperature alloys. Excellent for hard milling.

Metric Square Shoulder Spare Parts & Tools

Square Shoulder Spare Parts and Tools
Spare Parts & Tools
Part Description Order Number
for all ..1003.. Inserts for all ..1604.. Inserts
Clamping Screw SSTX08-S SSTX15-S
Wrench T-8F T-15F
Tightening Torque for Clamping Screw 1.0 N/m 3.5 N/m

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