WALTERSquare (S) Indexable Turning Inserts

WALTER Square (S) Indexable Turning Insert SCMT431-RK4 / SCMT120404-RK4

The WALTER Square Turning Insert, model SCMT431-RK4 and SCMT120404-RK4 (MPN 6651123), is a square (S) indexable turning insert. It is available in two size variants: SCMT431-RK4 and SCMT120404-RK4.

SKU 3G-OTH-229540

Brand

WALTER

Item

Square

Part Number

6651123

Local availability & support

Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

WALTER

Manufacturer Part Number

6651123

Technical Documents

No technical documents available for this product.

Request documentation →

Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.

Talk to an engineer

Ask a question

WALTER Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WALTER Square Turning Insert, model SCMT431-RK4 and SCMT120404-RK4 (MPN 6651123), is a square (S) indexable turning insert. It is available in two size variants: SCMT431-RK4 and SCMT120404-RK4.

Frequently Asked Questions

What is the WALTER SCMT431-RK4 turning insert used for?

The WALTER SCMT431-RK4 (also SCMT120404-RK4, MPN 6651123) is a square indexable turning insert for general turning, facing, and profiling on steel, stainless steel, and cast iron. It suits medium to finishing cuts in automotive, oil & gas, and general machining.

What are the specifications of the WALTER SCMT120404-RK4 insert?

The WALTER SCMT120404-RK4 (MPN 6651123) is a square (S) indexable turning insert with size code SCMT120404-RK4. It is the metric equivalent of SCMT431-RK4, designed for precision turning operations. Both variants share the same geometry and grade.

Where to buy WALTER turning inserts worldwide?

3G Electric supplies WALTER SCMT431-RK4 and SCMT120404-RK4 turning inserts worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time.

How to select between SCMT431-RK4 and SCMT120404-RK4?

SCMT431-RK4 and SCMT120404-RK4 are the same WALTER insert in inch and metric designations. Use SCMT431-RK4 for inch-based toolholders and SCMT120404-RK4 for metric holders. Both offer the same RK4 chipbreaker for low cutting forces and good surface finish.

Used in

Common applications for WALTER

Automotive engine component machining — WALTER indexable face mills (e.g., F2010.B.250.Z12.13.R722M) for face milling cylinder heads and blocks.

Aerospace structural parts manufacturing — WALTER screw-machine length drill bits (e.g., A1148-4.5) for drilling holes in aluminum and titanium components.

General machining job shops — WALTER indexable face mills (e.g., F4042R.B16.040.Z05.10) for face milling steel and stainless steel workpieces.

Heavy equipment repair — WALTER indexable face mills (e.g., 127 mm diameter with 11 inserts) for resurfacing large cast iron and steel parts.

Energy sector valve and pump manufacturing — WALTER indexable face mills (e.g., 100 mm diameter with R720M geometry) for machining sealing surfaces.

CNC lathe operations — WALTER screw-machine length drill bits (e.g., A1148-4.5) for drilling in automated turning centers with bar feeders.

Not sure this is the right part? Photo-identify it→

WALTER Products

3G Electric supplies WALTER square (s) indexable turning inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all WALTER products →Contact our engineers →