Sutton D1881650 16.5mm Reduced Shank Drill Bit - 12.5mm Shank, 152mm, HSS

The Sutton D188 metric reduced shank drill bits are high speed steel (HSS) drills in 27 sizes from 13.5 to 30 mm, each with a 12.5 mm shank, a 152 mm (6") overall length and an 86 mm (3-3/8") flute length. The reduced shank is designed to let drills above 12.5 mm and 1/2" fit 13 mm drill chucks.

The precision ground flute and bright cutting edge with a blue flute are designed to make these drills a better choice for ferrous materials. The 118° standard point is a common point for general purpose applications. Overall and flute lengths do not include the drill point. Use low speed, 350 RPM or less, and secure the workpiece and the drill firmly.

Where this product is used

• Drilling larger holes in a drill with a 13 mm chuck, where a full size shank would not fit.
• Drilling ferrous materials at low speed.
• Applications include DIY, trade, industrial, automotive, metalworking, machine shop and MRO work.

Design features

• Reduced shank (12.5 mm): designed to fit 13 mm drill chucks on drills above 12.5 mm and 1/2".
• Precision ground flute with a bright cutting edge and blue flute: designed to suit ferrous materials.
• 118° standard point for general purpose applications.
• High speed steel (HSS) construction.
• 152 mm (6") overall length with an 86 mm (3-3/8") flute length.

Sizes and item numbers

Each size is a single drill. Lengths do not include the drill point.

Using the drills

• Fit the drill in a drill chuck that closes on the 12.5 mm shank and drill at 350 RPM or less.
• Secure the workpiece and hold the drill firmly.

Key specifications

Related products

Reduced shank drill sets: D188 SM8R 8 piece set (14 to 25 mm) and D188 RS4M 4 piece set (16 to 25 mm). Imperial drills: D188 imperial reduced shank drill bits. Browse all drills and drilling accessories.