SUMITOMOSquare (S) Indexable Turning Inserts
SUMITOMO Square Turning Insert: SPMN421
The SUMITOMO Square Turning Insert, model SPMN421 (also referenced as SPMN120304 and MPN SPMN421-AC415K), is a square (S) indexable turning insert. Key specifications include the part numbers SPMN421 and SPMN120304.
SKU 3G-OTH-229231
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerNo account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h
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 engineerAsk a question
SUMITOMO Products
3G Electric (S) Pte. Ltd. — Singapore
Product Description
The SUMITOMO Square Turning Insert, model SPMN421 (also referenced as SPMN120304 and MPN SPMN421-AC415K), is a square (S) indexable turning insert. Key specifications include the part numbers SPMN421 and SPMN120304.
Used in
Common applications for SUMITOMOAutomotive engine block machining — Sumitomo SNMG square turning inserts for facing and boring cast iron
Aerospace component turning — Sumitomo DNMG diamond inserts with UP chipbreaker for finishing titanium alloys
Oil and gas valve production — Sumitomo TPMR triangle inserts with T1500Z grade for threading stainless steel
General engineering shaft turning — Sumitomo CNMG diamond inserts with LU chipbreaker for medium interrupted cuts
Mold and die finishing — Sumitomo VNMG diamond inserts with UZ chipbreaker for hardened steel profiling
Heavy equipment repair — Sumitomo TCMT triangle inserts with AC810P grade for turning wear-resistant steels
SUMITOMO 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.
