Baer Heli Coil Tap — Spiral Flute STI Tap for M12 x 1.75

Designed to pair seamlessly with Baer Heli Coil wire thread inserts, this metric spiral flute tap delivers precise, repeatable internal threads for reliable repairs and strong reinforcement in a variety of materials. When you need to restore original thread strength in damaged holes or prep new inserts with confidence, this tap is built to perform.

Key advantages you’ll feel on every job

• Spiral flute STI geometry for efficient chip evacuation, reduced binding, and smoother tapping in blind or through-holes.
• High-speed steel construction with a durable edge that stays sharp through multiple insert installations and wear.
• Metric precision: M12 x 1.75 thread form that aligns perfectly with standard Heli-Coil inserts for dependable engagement.
• Optimized for wire thread inserts: Creates a clean, true thread that maximizes load distribution and resists pull-out under heavy use.
• Consistent thread quality: Ground flute geometry ensures uniform thread form for predictable nut/bolt engagement and longer service life.
• Material versatility: Effective in aluminum, steel, and other common engineering substrates with proper cutting fluid and technique.

Practical application notes

Use a clean pilot hole as the foundation for a solid repair—a 10.0 mm drill is a common starting point for M12 x 1.75 taps, followed by deburring. Apply appropriate cutting fluid to reduce heat and extend tool life. Tap to the depth required by the insert manufacturer, then install the Heli-Coil coil to restore full thread strength in the affected component.

Ideal for professionals and shops

Machinists, maintenance technicians, and shop floor engineers will appreciate the confidence this tap provides when repairing stripped threads or reinforcing critical joints. It’s particularly valuable in automotive, aerospace, and industrial settings where thread integrity directly impacts safety and performance.

Baer Heli Coil Tap — Spiral Flute Tap (STI) — M12 x 1.75