Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
SUMITOMO Square (S) Indexable Turning Insert SPG421-AC5015S - Square (S) Indexable Turning Inserts
SUMITOMOSquare (S) Indexable Turning Inserts

SUMITOMO Square (S) Indexable Turning Insert SPG421-AC5015S

The SUMITOMO Square Turning Insert, model SPG421 (MPN SPG421-AC5015S), is a square (S) indexable turning insert. It is also referenced as SPGN120304. This product is designed for turning operations.

SKU 3G-OTH-229472

Also listed as: SPG421AC5015S · SPG421 AC5015S

Brand
SUMITOMO
Item
Square
Part Number
SPG421-AC5015S
Category
Square (S) Indexable Turning Inserts
Available to Order
Also known as:SPG421-AC5015SSUMITOMO
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No 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

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SUMITOMO
Manufacturer Part Number
SPG421-AC5015S

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

SUMITOMO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SUMITOMO Square Turning Insert, model SPG421 (MPN SPG421-AC5015S), is a square (S) indexable turning insert. It is also referenced as SPGN120304. This product is designed for turning operations.

Frequently Asked Questions

What is the SUMITOMO SPG421 square turning insert used for?

The SUMITOMO SPG421 (SPGN120304) is a square indexable turning insert designed for general turning operations on lathes. It is commonly used in metalworking industries for external and internal turning, facing, and profiling of steel, stainless steel, and cast iron workpieces.

What are the specifications of the SUMITOMO SPG421 insert?

The SUMITOMO SPG421 insert has the model number SPG421 and is also referenced as SPGN120304. The manufacturer part number is SPG421-AC5015S. It is a square (S) indexable turning insert used for turning operations. These specifications define its geometry and grade for machining.

Where to buy SUMITOMO SPG421 turning inserts worldwide?

You can source SUMITOMO SPG421 turning inserts through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this item.

How to select the correct SUMITOMO SPG421 insert for a turning job?

To select the correct SUMITOMO SPG421 insert, match the SPGN120304 geometry and SPG421-AC5015S grade to your workpiece material and cutting conditions. Consider the insert's square shape for 90-degree shoulder turning. Always consult the SUMITOMO technical catalog for recommended speeds and feeds.

Used in

Common applications for SUMITOMO
Automotive 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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from SUMITOMO

View all SUMITOMO parts
Square (S) indexable turning insert for general-purpose turning, facing, and profiling operations on metal workpieces. Available as SNMG431EUP and SNMG120404N-UP
SUMITOMO
Square (S) indexable turning insert for general-purpose turning, facing, and profiling operations on metal workpieces. Available as SNMG431EUP and SNMG120404N-UP
SUMITOMO
SUMITOMO
Square (S) indexable turning insert for general turning, facing, and profiling operations on metal workpieces. Commonly used in CNC lathes and manual machining centers for medium-duty cutting
SUMITOMO
SUMITOMO
Square (S) indexable turning insert for general turning, facing, and profiling operations on metal workpieces. Suitable for medium to finishing cuts in steel, stainless steel, and cast iron. Manufacturer part number: SNMG544EEM-AC5025S
SUMITOMO
SUMITOMO
Square (S) indexable turning insert with 0° clearance angle and chipbreaker geometry. Used for general turning, facing, and profiling operations on metal workpieces. Identified by part numbers SNMG643EEM and SNMG190612N-EM
SUMITOMO
SUMITOMO
Square (S) indexable turning insert with four cutting edges for general-purpose turning, facing, and profiling operations. Suitable for machining steel, stainless steel, and cast iron in industrial manufacturing
SUMITOMO
SUMITOMO
Square (S) indexable turning insert for general turning, facing, and profiling operations on metal workpieces. Provides four cutting edges for cost-effective material removal. Alternate reference SNMG120404N-EF
SUMITOMO
SUMITOMO
Square (S) indexable turning insert for general turning, facing, and profiling operations on metal workpieces. Manufacturer part number SNMG433EEM-AC5025S with alternate specification SNMG120412N-EM. The insert grade AC5025S is designed for metal cutting applications
SUMITOMO
SUMITOMO
Square (S) indexable turning insert with four cutting edges for economical use. Suitable for general turning, facing, and profiling operations on metal workpieces. Alternate specification SNMG120408N-EF

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first