HSS CONSTRUCTION REAMER 

HELIX FLUTE, RIGHT HAND CUT FRACTIONAL SIZE

construction reamers

Fractional Size (in.)

Decimal Equiv. (in.)

Length Shank (in)

Diameter Shank (in)

length overall (in)

3/16

.1905

1-1/2

.2500

3-1/2

7/32

.2218

1-1/2

.2500

3-1/2

1/4

.2530

1-1/2

.2500

4

9/32

.2842

1-1/2

.2500

4

5/16

.3155

1-1/2

.2500

4-1/2

11/32

.3468

1-1/2

.2500

4-1/2

3/8

.3780

1-1/2

.3750

5

7/16

.4405

1-1/2

.4375

5-1/4

1/2

.5030

1-1/2

.5000

5-15/16

5/8

.6280

1-1/2

.5000

6-9/16

3/4

.7530

1-1/2

.5000

7

7/8

.8780

1-1/2

.5000

7-1/4

1

1.0030

1-1/2

.5000

7-1/4

9/16

.5655

1-1/2

.5000

6-1/4

11/16

.6905

1-1/2

.5000

7

13/16

.8155

1-1/2

.5000

7-1/4

15/16

.9405

1-1/2

.5000

7-1/4

1-1/16

1.0655

1-1/2

.5000

7-1/4

1-1/8

1.1280

1-1/2

.5000

7-1/4

1-3/16

1.1905

1-1/2

.5000

7-1/4

1-1/4

1.2530

1-1/2

.5000

7-1/2

1-5/16

1.3155

1-1/2

.5000

7-1/2

1-3/8

1.3780

1-1/2

.5000

7-1/2

1-7/16

1.4405

1-1/2

.5000

7-1/2

1-1/2

1.5030

1-1/2

.5000

7-1/2