7 Pcs/set HSS Self Centering Window Door Hinge Twist Wood Tapper Drill Bits Hardware Tools,Default NO5248

Feature:

Material: high-speed steel

All shank size:1/4\"

Hole Size:

5/64\" 7/64\",9/64\" 11/64\", 5mm, 13/64\"，1/4\"

High speed steel drill bits, with 7pcs.

The Shank of the stainless steel drill is 1/4\'\' inch.

Suitable for wood window or door tapping.

Fast replacement composite cone, uses drill edged principle.

Drilling and tapping, high working efficiency.

High hardness, rustproof, solid and durable.

Positioning accuracy, will not shift,

the chips automatic discharge from either side of the top of the drill hole , don\'t stuck drill.

The bits are surrounded by spring loaded guides that have a widow to show

the drill bit depth while making adjustments.

They come in the 3 most common hinge screw sizes 7/64\",9/64\", & 11/64\".

The 7/64\" is good for drilling holes in smaller hinges and hardware like decorative boxes.

The 9/64\" is ideal for medium to full size hinges and hardware.

The 11/64 is perfect for door hinges, gate locks and all large hardware.

5/64 : Hole diameter is about 2mm, Use about 2.2 - 2.8mm tapping screw

7/64 : Hole diameter is about 2.8mm,Use about 3 - 3.5mm tapping screw

9/64 : Hole diameter is about 3.5mm,Use about 4 - 4.5 mm tapping screw

11/64 : Hole diameter is about 4.5mm,Use about 5 - 5.5 mm tapping screw

5mm: Hole diameter is about 5mm, Use about 5.5-6mm tapping screw

13/64\'\': Hole diameter is about 5.2mm, Use about 6-6.5mm tapping screw

1/4\'\': Hole diameter is about 6.35mm, Use about 7-7.5mm tapping screw

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