SUMITOMO Square Turning Insert: SPMN421
The SUMITOMO Square Turning Insert, model SPMN421 (also referenced as SPMN120304, MPN SPMN421-AC420K), is a square (S) indexable turning insert. Key specifications include the SPMN421 and SPMN120304 designations.
SKU 3G-OTH-229230
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Product Description
The SUMITOMO Square Turning Insert, model SPMN421 (also referenced as SPMN120304, MPN SPMN421-AC420K), is a square (S) indexable turning insert. Key specifications include the SPMN421 and SPMN120304 designations.
Frequently Asked Questions
What is the SUMITOMO SPMN421 square turning insert used for?
The SUMITOMO SPMN421 square turning insert is used for general turning, facing, and profiling operations on metal workpieces. Its square shape provides four cutting edges for cost-effective machining. It is commonly applied in automotive, aerospace, and general engineering industries.
What are the specifications of the SUMITOMO SPMN421 insert?
The SUMITOMO SPMN421 insert is a square (S) indexable turning insert with designations SPMN421 and SPMN120304. The manufacturer part number is SPMN421-AC420K. It is designed for use in turning applications and is made by SUMITOMO.
Where to buy SUMITOMO SPMN421 inserts worldwide?
3G Electric supplies SUMITOMO SPMN421 inserts worldwide. We handle full logistics, customs clearance, and delivery to your location. As a global industrial solutions provider, we source genuine SUMITOMO parts and support your procurement needs across all regions.
How to select the correct SUMITOMO turning insert for your lathe?
To select the correct SUMITOMO turning insert, match the insert shape (square S), size (SPMN421 or SPMN120304), and grade (AC420K) to your tool holder and workpiece material. Consult your machine manual or contact 3G Electric for guidance on compatibility and application.
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Common applications for SUMITOMOSUMITOMO Products
3G Electric supplies SUMITOMO square (s) indexable turning inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
