Sutton T177 9/16 x 18 TPI Spiral Point Tap VA - HSSE - TiCN - DIN 2184-1

The Sutton T177 is a spiral point (gun) tap (VA designation) for UNF threads, made from premium grade high speed steel (HSSE) with a TiCN coating. This listing covers one size: 9/16 x 18 TPI.

The gun (spiral point) nose curls the chip forward, ahead of the tap and out of the hole, so chip clogging is avoided and coolant can flow without problems. It suits through holes. The VA designation is for stainless and tough steels, with a high rake angle and thread relief, so the chip flows continuously in an axial direction. The chamfer is Form B (4.5 x P), for through holes in medium and long chipping materials.

The thread tolerance is 2B. The tap is built to DIN 2184-1.

Where this product is used

• Use in stainless steels and high strength steels up to 1000 N/mm2.
• Through holes.
• Suitable for machine operations.
• Depths up to approx. 3 x d1.

Design features

• Premium grade high speed steel (HSSE). The vanadium grade gives high wear resistance and toughness for most tapping applications.
• TiCN coating for abrasive materials such as cast iron and aluminium alloys, and adhesive materials such as copper and copper-based alloys.
• 3 flutes.
• Form B chamfer, 4.5 x P.
• Thread tolerance 2B.
• The VA designation is for stainless and tough steels, with a high rake angle and thread relief, so the chip flows continuously in an axial direction.
• DIN 2184-1 construction.

Sizes

Dimensions are in millimetres. Item numbers are the Sutton catalogue numbers. If you are not sure which tapping drill to use, try our tap drill size selector.

Key specifications

Related products

Related Sutton taps: T176 UNF Spiral Point Tap VA - HSSE - Steam Oxide - DIN 2184-1, T175 UNF Spiral Point Tap - HSSE - TiN - DIN 2184-1, T173 UNF Spiral Point Tap - HSSE - Bright - DIN 2184-1, T439 UNF Spiral Point Tap Intermediate - HSSE - Bright - ISO 529, T440 UNF Spiral Point Tap Intermediate - HSSE - Steam Oxide - ISO 529.