forstner bit - side and front view
Forstner bits are designed for intricate woodworking. Used to drill flat bottom or through holes. Can bore any arc of a circle. Bit is guided by circular rim instead of center. Will cut satin smooth without deflection by grain or knots. Forstner bits are available machine ground to size from High Carbon Steel stock. Sizes 2-1/4 and over have multi-spur cutting edge.
360° view
SIZE     OAL SHANK
1/4 4 3/8
5/16 4 3/8
3/8 4 3/8
7/16 4 3/8
1/2 4 3/8
9/16 4 3/8
5/8 4 3/8
11/16 4 3/8
3/4 4 3/8
13/16 4 3/8
7/8 4 3/8
15/16 4 3/8
1 4 3/8
1-1/8 4 3/8
1-1/4 4 3/8
1-5/16 4 3/8
1-3/8 4 3/8
1-1/2 4 3/8
1-9/16 4 3/8
1-5/8 4 3/8
1-3/4 3-1/2 3/8
1-7/8 3-1/2 3/8
SIZE     OAL SHANK
1-15/16 3-1/2 3/8
2 3-1/2 3/8
2-1/8 4 3/8
2-1/4 6 1/2
2-3/8 6 1/2
2-1/2 6 1/2
2-5/8 6 1/2
2-3/4 6 1/2
2-7/8 6 1/2
3 6 1/2
3-1/8 6 1/2
3-1/4 6 1/2
3-1/2 6 1/2
3-9/16 6 1/2
3-5/8 6 1/2
3-11/16 6 1/2
3-3/4 6 1/2
3-7/8 6 1/2
METRIC EUROPEAN HINGE SIZES
26mm 4 3/8
35mm 4 3/8
40mm 4 3/8
Forstner Bit Sets
Forstner Bit Sets are available in the following quantities:

7pc - 1/4 to 1 by 8ths
16pc - 1/4 to 2-1/8 by 8ths
24pc - 1/4 to 3-1/8 by 8ths
31pc - 1/4 to 2-1/8 by 16ths
8pc - 2-1/4 to 3-1/8 by 8ths