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Westward M16-2 spiral point tap, uncoated steel, three flutes

Westward

Westward 5TWL7 Spiral Point Tap M16-2 Plug Metric Coarse 3 Flutes Uncoated

SKU CH-2ZFB-S2642

M16x2 metric coarse spiral-point tap with three flutes and uncoated high-speed steel for through-hole threading

  • Product typeHole, Drill, Bore & Wire Gauges
  • M16x2 metric coarse thread for standard hole tapping
  • Spiral point design pushes chips forward through through-holes
  • Three flutes balance chip clearance with cutting strength
  • High-speed steel construction resists wear during repeated use
  • Bright uncoated finish suits general-purpose threading applications

Spiral Point Tap M16-2

This Westward spiral point tap cuts metric coarse threads sized M16-2. It is intended for machinists and maintenance technicians who need to create new internal threads or restore damaged ones in through-hole applications. The uncoated high-speed steel construction suits general-purpose use across a range of ferrous and non-ferrous materials. Right-hand cutting direction matches standard thread conventions.

Chip Ejection and Cutting Action

The spiral point design pushes chips ahead of the tap, reducing clogging and cutting torque during normal use. Three flutes provide balanced chip clearance and tool rigidity for consistent thread quality. Bright uncoated finish allows visual inspection of the cutting edges and simplifies resharpening when required. Plug chamfer length assists smooth entry and alignment at the start of the hole.

Through-Hole Threading Requirements

This tap requires a correctly sized drill hole before threading begins. The 3B class of fit and D7 thread limit produce a precise internal thread for standard metric fasteners. Overall length of 3 13/16 inches with a 1 13/16 inch thread length suits deeper through-holes where bottoming taps cannot reach. Uncoated surface may require cutting fluid to extend tool life in tougher alloys.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 60% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameWestward
Product typeHole, Drill, Bore & Wire Gauges

Questions about this item

How do I install the M16x2 spiral point tap and what step is often missed?

Use a tap wrench matched to the 3 13/16 in overall length, apply cutting fluid, and start the plug chamfer square to the hole; the step most often missed is clearing chips every half turn to prevent binding in the 1 13/16 in thread length.

What maintenance or replacement will this uncoated high speed steel tap need later?

The bright finish offers no wear coating, so expect to resharpen or replace the three flutes once the D7 thread limit no longer produces a 3B class of fit, typically after repeated use in abrasive materials.

What limit appears first when tapping M16x2 holes continuously?

Heat buildup in the uncoated high speed steel body becomes the limiting factor during sustained cutting, causing the cutting edges to lose hardness before the D7 pitch diameter tolerance is exceeded.

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