S (Square 90°) carbide inserts are among the most widely used indexable inserts in CNC machining. With their four cutting edges, they provide cost-effective machining, longer tool life, and reliable performance for both roughing and finishing operations. These inserts are designed with a 90° cutting angle, making them ideal for shoulder milling, face milling, and square shoulder turning.

At CNC Tools Depot, the world’s largest marketplace for carbide inserts, you can find S (Square 90°) inserts from top brands such as Korloy, Widia, Kennametal, Taegutec, Mitsubishi, Iscar, and Sandvik.

🔧 Key Features of S (Square 90°) Carbide Inserts

• 90° Cutting Edge – Perfect for producing accurate right-angle shoulders.

• Four Effective Edges – Offers cost efficiency by utilizing multiple edges per insert.

• High Stability – Strong insert shape provides excellent toughness and edge security.

• Versatile Use – Suitable for a wide range of machining applications in steel, stainless steel, cast iron, and non-ferrous metals.

• Durability – Advanced carbide grades with PVD and CVD coatings for maximum wear resistance.

⚙️ Applications of Square (S) Carbide Inserts

S (Square 90°) carbide inserts are widely used in:

• Milling Applications

  • Shoulder Milling

  • Face Milling

  • Slotting

  • Contour Milling

• Turning Applications

  • External Turning (right angle profiles)

  • Facing Operations

  • Chamfering (when used with specific tool holders)

• Materials Machined

  • Steel (P)

  • Stainless Steel (M)

  • Cast Iron (K)

  • Non-Ferrous Metals (N)

  • Heat-Resistant Alloys (S)

🔍 Types of S (Square 90°) Inserts

Depending on machining requirements, S-shaped inserts are available in various types:

1. SNMG (Square Negative with Hole, Ground) – Strong and stable for heavy-duty turning.

2. SNMM (Square Negative, Molded) – General purpose turning with excellent toughness.

3. SNMA (Square Negative, Uncoated) – For soft materials and low cutting forces.

4. SNMG with Chipbreaker – Improves chip evacuation and surface finish.

5. Square Milling Inserts (APKT-style alternative for milling cutters).

🏆 Advantages of Buying from CNC Tools Depot

• World’s Largest Marketplace – Access to 1000s of square carbide inserts.

• Global Brands – Korloy, Widia, Kennametal, Taegutec, Iscar, Sandvik & more.

• Competitive Pricing – Bulk order discounts available.

• Expert Support – Get technical help in choosing the right insert grade & geometry.