OSG Spiral Flute Tap: 5/8"-11 UNC, H3 / 2B-3B, 4 Flute

This OSG spiral flute tap is used for threading blind holes in ferrous and non-ferrous materials. The spiral flute design evacuates chips upward, preventing chip clogging. It is ideal for general-purpose tapping in machining, automotive, and industrial maintenance applications where a modified bottoming chamfer is required.

The OSG tap 2933208 is a 5/8-11 UNC spiral flute tap with 4 flutes, a modified bottoming chamfer, and an H3 / 2B-3B tolerance class. It is designed for threading blind holes to Class 2B or 3B fit. The H3 ground thread limit ensures precise sizing for consistent thread quality.

3G Electric supplies OSG taps worldwide, including the 2933208 spiral flute tap. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools and support procurement teams with technical guidance on thread tolerances and material compatibility.

For blind holes, choose a spiral flute tap with a modified bottoming chamfer, like this OSG 5/8-11 UNC tap. The spiral flute angle should match the material: higher helix for soft materials, lower for hard. Ensure the tap tolerance (H3 / 2B-3B) aligns with your required thread class. Use proper cutting fluid and peck tapping to clear chips.