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Taps & Dies

Short Description:

Taps and dies are metal threading tools, tap and die sets are used to cut and restore internal and external threads precisely. A tap is used to form the female component of the assembly, as in the case of a nut or socket, a die is used on the male component, as in a screw or bolt. In other words, a Tap is used to create the internal threads in a hole and a die is used to make or repair external threading on a round rod,

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Taps & Dies Description

Taps and dies are metal threading tools, tap and die sets are used to cut and restore internal and external threads precisely. A tap is used to form the female component of the assembly, as in the case of a nut or socket, a die is used on the male component, as in a screw or bolt. In other words, a Tap is used to create the internal threads in a hole and a die is used to make or repair external threading on a round rod, screw, or bolt. T handle wrenches are used with a tap to create or repair an internal thread. T Handles hold the end of a tap to provide extra leverage for hand tapping.

Material & Coating:

• High-Speed Steel (HSS): M2, M35 — standard for general machining

• HSS-E (Cobalt): Enhanced heat resistance for stainless and alloy steels

• Powder Metallurgy (HSS-PM): Superior wear resistance, longer tool life

• Carbide: Extreme hardness for cast iron, hardened steels, and abrasive materials

• Coatings: TiN, TiCN, TiAlN — reduce friction, increase speed, extend tool life

Critical Parameters:

• Tap Drill Size: Pre-drilled hole diameter must balance thread engagement strength and cutting torque

• Pitch Diameter: Determines thread fit class (e.g., 2B/3B internal, 2A/3A external)

• Speed & Feed: Optimized per material hardness and thread pitch to prevent tool breakage

Standards: ISO 529 (taps), ISO 2568 (dies), DIN 371/376, ANSI B94.9. Proper tap and die selection ensures accurate thread geometry, proper fit, and reliable joint performance.

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