APMT 1135/APMT 1604 R0.8 Carbide Milling Inserts
APMT 1135 and APMT 1604 carbide milling inserts with an R0.8 corner radius are designed for shoulder milling, face milling, slotting and general-purpose CNC machining. The positive cutting geometry helps reduce cutting resistance, while suitable coated grades provide reliable wear resistance for steel, stainless steel and other grade-dependent materials.
Consistent Quality
Consistent geometry across repeat orders.
Flexible Orders
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Standard & Custom
Standard sizes and custom configurations.
◆Product Overview
APMT 1135 and APMT 1604 R0.8 are indexable carbide milling inserts for use in compatible shoulder and face milling cutters. Both sizes have a nominal 0.8 mm corner radius in the supplied series chart. Choose the size to match the cutter pocket, then specify the complete geometry, carbide grade and coating for the workpiece and operation.
The original product description presents a coated, precision-ground carbide range. The exact substrate grain size, PVD coating system, edge preparation and application limits should be confirmed by full item code; a shared APMT designation does not establish identical performance across variants.
◆Key Configuration
Two Insert Sizes
The chart lists 1135 at l 11 × d 6.35 × t 3.5 mm and 1604 at l 16.5 × d 9.525 × t 4.76 mm. They require the corresponding cutter pocket.
R0.8 Corner
The listed 0.8 mm corner radius provides a defined corner geometry. Finish, cutting force and edge durability still depend on the full insert geometry and cutting conditions.
Grade & Chip Control
The chart names H2, M2 and PM variants. Confirm what each suffix means for the selected supplier, along with the carbide grade, coating and chipbreaker.
◆Applications & Selection
Specify the workpiece grade and hardness when selecting an insert for carbon or alloy steel, stainless steel or cast iron. Select a supplier-defined grade and geometry for that material. Face and shoulder milling are typical with a compatible cutter; slotting, ramping, profiling and interrupted cutting require the cutter manufacturer’s stated limits.
◆Product Images
◆Specifications & Size Chart
The supplied model chart lists APMT 1135 and APMT 1604 in H2, M2 and PM variants, each with an R0.8 corner. Dimensions below reproduce its labeled values in millimeters: l is the listed length, d the listed width, t the listed thickness and R the corner radius. Use the complete insert and cutter-body drawings for pocket and screw fit.
| Model Shown | Variant | l (mm) | d (mm) | t (mm) | R (mm) |
|---|---|---|---|---|---|
| APMT 1135–H2 | H2 | 11 | 6.35 | 3.5 | 0.8 |
| APMT 1604–H2 | H2 | 16.5 | 9.525 | 4.76 | 0.8 |
| APMT 1135–M2 | M2 | 11 | 6.35 | 3.5 | 0.8 |
| APMT 1604–M2 | M2 | 16.5 | 9.525 | 4.76 | 0.8 |
| APMT 1135–PM | PM | 11 | 6.35 | 3.5 | 0.8 |
| APMT 1604–PM | PM | 16.5 | 9.525 | 4.76 | 0.8 |
◆Model & Dimension Reference
◆Material & Application
| Selection Field | What to Confirm |
|---|---|
| Primary workpiece | Steel (ISO P), stainless steel (ISO M) or cast iron (ISO K), subject to the selected grade and geometry; provide the exact workpiece grade, hardness and condition. |
| Milling operation | Shoulder and face milling with a compatible cutter. Profile milling, slotting and ramping depend on cutter-body design and published limits. |
| Carbide grade / coating | Confirm the offered substrate and coating by complete SKU; the size chart does not specify a grade or prove a PVD coating for every variant. |
| Geometry suffix | H2, M2 or PM as labeled; request the manufacturer's chipbreaker drawing and material recommendation. Do not interpret “M2” here as M2 high-speed steel. |
| Cutter fit | Compare pocket size, seating surface, fixing screw, insert hand and allowable axial depth with the cutter maker's documentation. |
◆How to Select the Insert
◆Starting Cutting Data
Use grade- and geometry-specific recommendations for the complete insert and cutter. Determine cutting speed (Vc), feed per tooth (fz), axial depth (ap) and radial width (ae) for the workpiece grade, cutter diameter, tooth count, coolant and engagement. The dimension chart does not provide a validated speed or feed range.
◆Related Guide & Ordering
For an overview of indexable insert families, read our Carbide Insert Types Guide. Send the cutter-body and complete insert codes to confirm dimensional fit, workpiece grade and availability.
◆Carbide Insert Customization & OEM
Specify the insert around the machining operation, workpiece and holder. We can review standard replacements, application-specific geometry and private-label requirements using your insert designation, drawing or sample. Available grades, coatings, dimensions and order quantities are confirmed for each requested series.
Geometry & Chip Control
Review chipbreaker, rake, cutting-edge preparation, nose radius and corner design for the operation and workpiece. Confirm holder compatibility before approving a modified geometry.
Substrate & Coating
Select an available carbide grade and coating for the workpiece material, cutting conditions and desired balance of wear resistance and edge toughness.
Dimensions & OEM
Review insert size, thickness, locating and clamping features, tolerances, laser marking and private-label packaging against the approved specification.
◆Customization Options
Use the fields below when sending an inquiry. The exact options depend on the insert family and are confirmed in the quotation or approved drawing.
| Specification | Details to Confirm |
|---|---|
| Insert Type | Turning, milling, threading, grooving or drilling insert; send the designation or drawing. |
| Size & Fit | Shape, size, thickness, inscribed circle or edge length, hole or clamping form, and holder model. |
| Cutting Geometry | Chipbreaker, nose or corner radius, edge preparation, cutting direction and application-specific profile. |
| Grade & Coating | Workpiece group and grade, carbide substrate, coating system and wet or dry cutting conditions. |
| Tolerance & Inspection | Critical dimensions, profile requirements, inspection method and any required report. |
| OEM Presentation | Insert or box marking, label content, packaging format and quantity per pack. |
◆How to Request a Custom Insert
Send your insert requirements through our contact form or review our OEM and private-label service.
◆Carbide Insert Quality Control
Insert quality depends on the approved grade, geometry, coating and dimensional specification. We review the requirements at order confirmation and align the inspection scope with the insert series and any customer drawing. Share critical dimensions or documentation needs before production so they can be included in the agreed inspection plan.
01 · Incoming Material
Confirm the specified carbide grade or material documentation against the order requirements.
02 · In-Process Checks
Review dimensions and cutting-edge features during production against the approved specification.
03 · Final Inspection
Check the agreed dimensions, appearance, edge condition, coating identification and marking as applicable.
04 · Packing Review
Verify the item code, quantity, labels and protective packing against the approved order.
◆Inspection & Documentation
Inspection points and acceptance criteria should be agreed for the ordered series. For custom inserts, the approved drawing takes priority over a generic catalogue description.
| Check Area | What to Confirm |
|---|---|
| Dimensions & Fit | Insert size, thickness, corner radius, clamping features and any drawing tolerances. |
| Cutting Geometry | Chipbreaker, edge preparation, usable corners and profile where applicable. |
| Grade & Coating | Approved grade and coating designation; any requested verification method. |
| Appearance & Packing | Visible edge damage, marking, item code, count and packing format. |
| Requested Records | Inspection report, material or coating documentation, sample approval or batch identification when agreed. |
◆Order & Delivery
Share a line-by-line list of insert codes and quantities for a mixed-size quotation. Stock status, minimum quantity, sample requirements and production lead time are confirmed for each grade, coating and configuration.
Send your item list and quality requirements through our contact form for specification, availability and delivery confirmation.
◆Product FAQs
What is the difference between APMT 1135 and APMT 1604?
They are different insert size families for different cutter pockets. In the supplied chart, 1135 is l 11 × d 6.35 × t 3.5 mm and 1604 is l 16.5 × d 9.525 × t 4.76 mm; both show an R0.8 corner. Confirm the complete item and cutter drawings.
What does R0.8 indicate?
It denotes the listed 0.8 mm corner radius for these rows. The corner radius alone does not define the edge preparation, chipbreaker or expected surface finish; confirm the full configuration and cutting conditions.
Can one coating grade cover steel, stainless steel and cast iron?
Some carbide grades cover more than one material group, but suitable substrate, coating, edge geometry and parameters must be checked for ISO P steel, ISO M stainless steel or ISO K cast iron separately. Specify the actual alloy, hardness, cutter body, coolant and operation when requesting a recommendation.
Do H2, M2 and PM indicate different steel grades?
They are model-variant suffixes shown in the reference chart. Their precise geometry and application range depend on the supplier's full designation. “M2” here is not a declaration that the carbide insert is made from M2 high-speed steel.
Can these inserts be used for slotting or ramping?
Shoulder and face milling are typical with a compatible cutter. Slotting, ramping or helical entry require the cutter maker's approval and limits for axial depth, ramp angle and chip clearance. The insert designation alone cannot establish these capabilities.
How should I select speed and feed for R0.8 inserts?
Request grade-specific Vc and feed per tooth for the exact workpiece grade, cutter diameter, tooth count and engagement. Start within that published range, then check chip formation, wear, chatter and surface finish during a trial cut.
◆Ordering & OEM FAQs
Will any APMT 1135 or 1604 insert fit my cutter?
Match the complete insert code against the cutter's approved insert list. Check the pocket, seating surface, screw, hole form, corner radius, cutting hand and chipbreaker. The size name and R0.8 radius alone do not prove fit; 1135 and 1604 require their respective pockets.
What should I send for an equivalent-insert request?
Provide the existing manufacturer's complete insert code and grade, box-label photos, front and back insert photos, cutter-body code, workpiece grade, cutting conditions, current wear problem and required quantity. Compare fit and cutting results with a sample before repeat purchasing.
Can I combine grades or chipbreakers in one order?
Send a line-by-line list with each complete insert code and quantity. Mixed-model availability, minimum quantity, pack count and lead time are confirmed per item rather than assumed from the APMT size name.
Are custom marking and private-label packaging available?
Send the requested insert or box marking, label artwork, packaging format and expected quantity. Confirm the approved insert specification and quotation before production or a repeat order.
◆Guides & Technical References
Use our Carbide Insert Types Guide for insert-code and material-group selection. For stainless-steel process issues, see our stainless-steel machining guide.
For the specific coated grade, drawing and quotation, send the full insert and cutter-body codes.
Need Sizes, Pricing or Custom Options?
Send us the required tool type, sizes, quantities, workpiece material and any OEM or custom requirements. We will confirm suitable specifications, availability, lead time and quotation details.
Drawings, size lists and reference photos are welcome.
