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Small gold-coated metal tap with straight flutes and tapered tip

Greenfield Threading

Greenfield Threading Straight Flute Hand Tap M2.5 x 0.45 Taper 3 Flute 46.04mm HSS TiN 328688

SKU CH-W547-M5ANZ

Metric M2.5 x 0.45 taper hand tap, 46.04 mm overall length, high-speed steel with TiN coating, 12.7 mm thread length, D3 limit for 2B fit

  • Metric M2.5 x 0.45 threads for precise fastening
  • Taper lead starts threads easily in blind holes
  • High-speed steel with TiN coating resists wear
  • 04 mm overall length reaches deep holes
  • Three flutes clear chips for smooth cutting

M2.5 x 0.45 Metric Tap for Precision Threading

This straight flute hand tap cuts M2.5 x 0.45 metric threads in a range of materials. It suits maintenance engineers and machinists producing internal threads for small fasteners. The taper lead eases starting in through-holes and shallow blind holes. High-speed steel construction with TiN coating resists wear during repeated use.

Taper Lead Manages Chip Flow in Sustained Cuts

The taper chamfer distributes cutting load across multiple threads to reduce torque spikes. This geometry helps maintain consistent thread quality during extended production runs. High-speed steel retains hardness at elevated temperatures generated by continuous tapping. TiN coating lowers friction to sustain cutting speed without premature edge breakdown.

Verify Drill Size and Thread Class Before Use

Check that the prepared hole matches the 75 percent thread drill size #46 specification. Confirm the required class of fit aligns with the D3 thread limit and 2B tolerance. Ensure the 12.7 mm thread length and 46.04 mm overall length suit the workpiece depth and toolholder reach. Right-hand cutting direction must match the application.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 84% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

Will the 46.04 mm length generate noticeable heat during extended tapping sessions?

The tap is a manual cutting tool made from high-speed steel with TiN coating; it produces no heat on its own — any warmth comes from the workpiece and cutting speed you apply.

What drill bit must I already own to prepare the correct hole for this M2.5 x 0.45 tap?

The manufacturer specifies a 75 percent thread drill size #46 for this thread size and pitch.

Can this D3 class 2B tap cut threads in older mild-steel parts without chipping?

High-speed steel with TiN coating handles mild steel well; use proper lubrication and the recommended #46 drill to reduce stress on the 3-flute taper design.

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