SCMT Inserts Manufacturer & Supplier in China
Source standard and custom SCMT square positive inserts for internal turning, stable finishing, facing, and light general machining.
What Is a SCMT Insert?
An SCMT insert is an ISO square, 7°-clearance, M-tolerance, positive single-sided turning insert with a fixing hole and chipbreaking geometry. Its square shape supports four cutting corners on one face, while the positive flank reduces cutting force for compatible internal, facing, and light general-turning operations.
Key Specifications
Insert Shape
90° square
Clearance Angle
7°
Tolerance Class
M class
Insert Configuration
Positive, single-sided with fixing hole; up to 4 corners
Common ISO Sizes
SCMT 09T3, 1204
Primary Applications
Internal turning, stable finishing, facing, light general turning
Custom SCMT Insert Options
Configure the key manufacturing details for your insert application, from dimensions and cutting material to edge condition and identification.
Dimensions & Tolerances
Specify insert dimensions and tolerances according to your drawings.
Cutting Material & Grade
Select insert material and grade to suit your machining application.
Top Geometry & Chip Control
Customize top geometry and chip control features for your cutting needs.
Edge Preparation
Specify edge honing, chamfers and other edge preparation options.
Coating & Surface Treatment
Choose coating and surface treatments to meet your cutting needs.
Marking & Packaging
Customize insert markings and packaging to meet your order requirements.
Available SCMT Insert Sizes
CarbideMatch offers SCMT inserts in the standard sizes listed below, with custom dimensions and application-specific configurations available upon request. Send us your required designation, drawing, dimensions, sample, workpiece material, or cutting conditions for technical review and quotation.
ISO Designation
IC (mm)
S (mm)
RE (mm)
D1 (mm)
SCMT 09T304
9.525
3.97
0.4
4.4
SCMT 09T308
9.525
3.97
0.8
4.4
SCMT 120404
12.7
4.76
0.4
5.56
SCMT 120408
12.7
4.76
0.8
5.56
SCMT 120412
12.7
4.76
1.2
5.56
Don't See the Configuration You Need?
The configurations shown above represent commonly requested options and may not include everything we can supply. Contact us to check another specification or discuss your custom requirements.
SCMT Insert Applications
SCMT inserts are selected where their verified shape, clearance, and holder access match the cutting path and setup.
Internal Turning
Boring operations where a square positive insert and bar head fit the bore.
Internal Facing
Bore-bottom or shoulder facing with adequate clearance and chip evacuation.
External Finishing
Stable light cuts where the square corner can approach the feature.
Facing
General facing in a compatible positive holder.
Light General Turning
Moderate stock removal within positive-edge strength and setup limits.
SCMT Insert FAQ
When should SCMT be chosen over CCMT?
SCMT offers a square 90° form and potentially four corners, while CCMT's 80° diamond provides different access; holder geometry and toolpath decide suitability.
Can SCMT reach a tight external profile?
The square shape restricts access compared with diamond inserts, so the component drawing and holder approach should be checked for interference.
What contributes to SCMT screw loosening?
Incorrect screw or torque, dirty seats, damaged threads, insert rocking, excessive load, and mismatched hole geometry should be investigated.
How is unused-corner damage reduced?
Maintain a clean seat, correct clamp load, controlled indexing, rigid support, and packaging that prevents insert-to-insert impact.
What should an SCMT trial report record?
Record insert batch, holder, material, hardness, cut type, data, coolant, time or parts, wear mode, finish, and dimensional trend.
Can a special SCMT hole or seat be manufactured?
Drawing-based variations can be reviewed, but holder compatibility, strength, pressing and grinding feasibility, inspection, and volume must be approved first.
About CarbideMatch
CarbideMatch is a cutting-tool manufacturer and multi-brand distributor with years of OEM manufacturing and industry experience. We currently focus on carbide and indexable inserts across a wide range of brands, grades and specifications.
Search by part number, ISO/ANSI code, grade or application to quickly identify suitable inserts and compatible alternatives
- Own Manufacturing Capabilities
- Multi-Brand Product Supply
- Application-Based Grade Matching
How We Work
Search by part number, ISO/ANSI code, grade or application — or send us your requirements and let us help match the right insert.
01
Submit Requirements
Share the part number, drawing, material or cutting conditions.
02
Review Application
We verify specifications, operation and performance goals.
03
Match the Solution
We match the right inserts to your materials, cutting conditions and requirements.
04
Quote & Sample
Confirm pricing, availability and samples when required.
05
Inspect & Deliver
Products are checked, securely packed and shipped on schedule.
06
Ongoing Support
We support trial feedback, repeat orders and optimization.