No.4 x 40 Green Ring UNC Spiral Flute Tap DIN371

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~~£38.66~~

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Part Number

TM65300400

Designed for Cutting

Stainless Steels & Low Alloy Carbon Steel (<600N/mm²)

Thread Form

UNC (Unified National Coarse)

Size

No.4

Flute Type

Spiral Flute - For Blind Holes

Ring Colour

Green Ring

Coating

Steam Tempered

Information

Thread Dia. D₁	Pitch	Thread Form	Thread Length L₂	Overall Length OAL	Shank Dia D₂	Square Sq	Tapping Drill Dia.
No.4	40	UNC Unified National Coarse	6mm	56mm	3.5mm	2.7mm	2.3mm

Flute Type: Spiral Flute

Recommended for: Blind Holes

Shank Standard: DIN 371

Type: High speed steel cobalt (HSSE) tap.

Coating: Steam Tempered VAP - The Steam Tempered is a Fe₃O₄-oxyd-coating which reduces the friction between tool and workpiece and prevents cold welding.

Tapping Materials
Excellent for tapping: Stainless Steels & Carbon Steels with low alloy content Rm<600N/mm²
Good for tapping: Heat resistant alloys & Titanium Alloys <270HB

Technical Data & Info

Tap Speeds for Materials:

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