High-Strength Replacement Insert Screws for CNC Tooling

These M4x6 T20 button head screws are durable replacement insert screws used in a variety of CNC insert tooling applications, including the IDC Woodcraft 1" Indexable Insert Surfacing Bit.

Manufactured from high-strength grade 12 steel with a black oxide coating, these screws are designed to provide reliable insert retention while standing up to repeated insert changes and demanding CNC use.

Keeping spare insert screws available is a simple way to avoid unnecessary downtime caused by misplaced, damaged, or worn hardware.

Why Backup Insert Screws Matter

Insert tooling is designed for efficiency and long-term performance—but losing or damaging a screw can stop a project fast.

Keeping spare insert screws available helps:

• reduce downtime
• maintain insert retention
• support safe cutter operation
• keep your CNC workflow moving

For serious CNC users, having backup hardware on hand is simply good shop practice.

Key Features & Specifications

M4x6 T20 Button Head Design

Precision-fit replacement screws designed for secure insert retention in the IDC Woodcraft 1" surfacing bit.

Grade 12 Steel Construction

Manufactured from high-strength steel for durability and dependable clamping performance.

Black Oxide Coating

Protective black oxide finish helps resist wear and corrosion while maintaining a professional appearance.

T20 Torx Drive

Designed for use with the included T20 Torx wrench supplied with the surfacing bit.

Convenient 2-Pack

Includes two replacement screws so you can keep extras available when needed.

Compatible Product

Designed for:

• IDC Woodcraft 1" Indexable Insert Surfacing Bit
• IDC Woodcraft 12x12x1.5 35° FK08 Carbide Insert

What's Included

• (2) M4x6 T20 Button Head Insert Screws

Who These Are For

• CNC users running insert surfacing bits
• Shops that want backup hardware available
• Users replacing lost or worn insert screws
• Anyone who wants to minimize unexpected downtime

Why Choose IDC Woodcraft?

IDC Woodcraft focuses on practical CNC tooling solutions designed around real-world use.

That includes the small things that keep projects moving—like having reliable replacement hardware available when you need it.

FAQ

Are these screws compatible with the IDC Woodcraft 1" surfacing bit?

Yes. These screws are designed specifically for the IDC Woodcraft 1" indexable insert surfacing bit.

What size are these screws?

These are M4x6 T20 button head screws.

Does this include the Torx wrench?

No. The T20 wrench is included with the original surfacing bit.

Why should I keep spare insert screws?

Having backup screws available helps prevent downtime if a screw becomes damaged, stripped, or misplaced during insert changes.

How many screws are included?

Each pack includes two replacement screws.

Item SKU: IS-S-M4