Sutton T361 G 1/4 x 19 TPI Forming Tap Multi Coolant Groove - HSSE - Bright - DIN 5156

The Sutton T361 is a forming (roll) tap with multi coolant groove for BSPF (G) threads, made from premium grade high speed steel (HSSE) with a bright finish. This listing covers 2 sizes from G 1/8 x 28 TPI to G 1/4 x 19 TPI.

A forming tap has no flutes and does not cut: it rolls the thread by displacing the metal, so it makes no chips and suits blind and through holes. Forming needs more machine power because of the torque involved, the rolled thread is stronger than a cut thread because the grain structure stays uniform through the thread form, and the tapping drill size differs from that of a cutting tap. The chamfer is Form C (2.5 x P).

The thread tolerance is ISO 228 X. The tap is built to DIN 5156: reduced shank with square drive.

Where this product is used

• For cold forming of threads in materials with good flow characteristics.
• Bright finish for non-ferrous materials.
• TiCN - Suitable for abrasive and difficult materials.
• Through or blind 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.
• Bright finish for general purpose applications.
• Form C chamfer, 2.5 x P.
• Thread tolerance ISO 228 X.
• DIN 5156 construction, reduced shank with square drive.

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: T363 BSPF (G) Forming Tap Multi Coolant Groove - HSSE - TiCN - DIN 5156.