Sutton T308 1-1/4 x 11.5 TPI Straight Flute Tap UNI - HSSE - Bright - DIN 2184-1

The Sutton T308 is a straight flute tap (UNI designation) for NPT threads, made from premium grade high speed steel (HSSE) with a bright finish. This listing covers one size: 1-1/4 x 11.5 TPI.

Straight flutes suit through or blind holes, but they hold only a small amount of chips and do not transport them axially, so deep holes are best avoided except in short chipping materials. The UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief. The chamfer is Form C (2.5 x P), generally for blind holes.

The thread tolerance is ANSI B1.20.1. The tap is built to DIN 2184-1.

Where this product is used

• Universal use.
• Suitable for materials up to 1000 N/mm2.
• Through or blind holes.

Design features

• Premium grade high speed steel (HSSE). The vanadium grade gives high wear resistance and toughness for most tapping applications.
• Bright finish for general purpose applications.
• 5 flutes.
• Form C chamfer, 2.5 x P.
• Thread tolerance ANSI B1.20.1.
• The UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief.
• 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: T308 NPT Straight Flute Tap UNI - HSSE - Bright - DIN 2184-1.