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BSK Carbide Burr Blank Return to Burr Menu
Shape SK (90-Degree Cone)

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Blank Designation A B C
Nominal Actual Nominal Actual
BSK-3 3/8 .390±.005 5/16 .313±.010 .032±.005
BSK-5 1/2 .515±.005 3/8 .375±.010 .032±.005
BSK-6 5/8 .640±.005 31/64 .484±.010 .063±.005
BSK-7 3/4 .767±.006 35/64 .547±.010 .063±.005
BSK-9 1 1.019±.007 41/64 .641±.010 .125±.005
All dimensions in inches.

Blank Designation TechMet Stock Number by Grade
TMK-15A TMK-15B
BSK-3 23076 21076
BSK-5 23077 21077
BSK-6 23078 21078
BSK-7 23096 21096
BSK-9 23079 21079