Addison Taper Shank Core Drills.

High Speed Steel

TAPER SHANK CORE DRILLS

 Specification Conform
to BS 328 - 1959
Dimensions in Inches

tapershankcoredrills

Core drills are designed to enlarge previously drilled, cored, or punched holes 75% of the tool diameter. They have a 30° relieved chamfer nose suitable for drilling rough cores. Three and four flute core drills have better hole size than two flute drills and produce a very good surface finish (although not to the standard produced by a reamer.) Note: Core drills cannot drill an original hole.

 

Diameter h 8 Flute Length Overall Length Morse Taper No.
9/32 2.23/32 5.29/32 1
19/64
5/16
21/64		 2.15/16 6.1/8 1
11/32
23/64		 3.3/16 6.3/8 1
3/8
25/64
13/32		 3.7/16 6.5/8 1
27/64
7/16
29/64		 3.11/16 6.7/8 1
15/32
31/64
1/2
33/64		 3.31/32 7.5/32 1
17/32
35/64		 4.1/4 7.7/16 1
9/16
37/64		 4.1/2 8.3/8 2
19/32
39/64
5/8		 4.3/4 8.5/8 2
41/64
21/32		 4.7/8 8.3/4 2
43/64
11/16
45/64		 5.1/8 9 2
23/32
47/64		 5.1/4 9.1/8 2
3/4
49/64
25/32		 5.1/2 9.3/8 2
51/64
13/16
53/64		 5.3/4 9.5/8 2
27/32
55/64
7/8		 5.7/8 9.3/4 2
57/64
29/32		 6.1/8 10 2
59/64 6.1/8 10.7/8 3
15/16
61/64
31/32		 6.1/4 11 3
63/64
1
1.1/64
1.1/32		 6.1/2 11.1/4 3
1.3/64
1.1/16
1.5/64
1.3/32		 6.5/8 11.3/8 3
1.7/64
1.1/8
1.9/64
1.5/32
1.11/64		 6.7/8 11.5/8 3
1.3/16
1.13/64
1.7/32
1.15/64		 7.1/8 11.7/8 3
1.1/4 7.1/4 12 3
1.17/64
1.9/32
1.19/64
1.5/16		 7.1/4 13.1/8 4
1.21/64
1.11/32
1.23/64
1.3/8
1.25/64		 7.1/2 13.3/8 4
Diameter h 8 Flute Length Overall Length Morse Taper No.
1.13/32
1.27/64
1.7/16
1.29/64
1.15/32		 7.5/8 13.1/2 4
1.31/64
1.1/2
1.33/64		 7.7/8 13.3/4 4
1.17/32
1.35/64
1.9/16		 7.7/8 13.3/4 4
1.37/64
1.19/32
1.39/64
1.5/8
1.41/64
1.21/32
1.43/64		 8.1/8 14 4
1.11/16
1.45/64
1.23/32
1.47/64
1.3/4
1.49/64 		8.1/4 14.1/8 4
1.25/32
1.51/64
1.13/16
1.53/64
1.27/32
1.55/64		 8.1/2 14.3/8 4
1.7/8
1.57/64		 8.5/8 14.1/2 4
1.29/32
1.59/64
1.15/16
1.61/64		 8.5/8 14.1/2 4
1.31/32
1.63/64
2		 8.7/8 14.3/4 4
2.1/32
2.1/16		 8.7/8 16.1/4 5
2.3/32
2.1/8
2.5/32
2.3/16		 9 16.3/8 5
2.7/32
2.1/4
2.9/32
2.5/16
2.11/32		 9.1/4 16.5/8 5
2.3/8
2.13/32
2.7/16
2.15/32		 9.1/2 16.7/8 5
2.1/2
2.17/32
2.9/16
2.19/32
2.5/8		 9.5/8 17 5
2.21/32
2.11/16
2.23/32
2.3/4
2.25/32		 9.7/8 17.1/4 5
2.13/16
2.27/32
2.7/8
2.29/32
2.15/16		 10 17.3/8 5
2.31/32
3		 10.1/4 17.5/8 5
3.1/32
3.1/16
3.3/32
3.1/8		 10.1/4 20.1/4 6

Please contact us for manufacturing non standard core drills, core drills in HSS M2, or with 5% or 8% cobalt.

Go to our download page for complete price list of Addison cutting tools in Indian rupees.

 

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