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Prod. No.  260

Made from high speed steel
Used for producing centre holes in components or work pieces which require machining between centres
60° countersink angle fits all standard centres   
Available in plain type and bell type
Plain type available in 60°, 80°, and 90° angle
Also available with standard and long lengths
Also available in BS standards BSI to Bs7
Code Body dia OAL Bell dia
  inch
RCDRB/1 1/8 3/64 1.1/4 .100
RCDRB/2 3/16 1/16 1.7/8 .150
RCDRB/3 1/4 3/32 2 .200
RCDRB/4 5/16 7/64 2.1/8 .250
RCDRB/5 7/16 5/32 2.3/4 .350
RCDRB/6 1/2 3/16 3 .400
RCDRB/7 5/8 7/32 3.1/4 .500
RCDRB/8 3/4 1/4 3.1/2 .600

Centre Drill Plain Type
Code Body dia Drill Dia OAL
inch
RCDRL/1 1/8 .025 1.1/8
RCDRL/2 1/8 1/32 1.1/8
RCDRL/3 1/8 3/64 1.1/4
RCDRL/4 3/16 5/64 1.7/8
RCDRL/5 1/4 7/64 2
RCDRL/6 5/16 1/8 2.1/8
RCDRL/7 3/8 9/64 2.1/2
RCDRL/8 7/16 3/16 2.3/4
RCDRL/9 1/2 7/32 3
RCDRL/10 5/8 1/4 3.1/4
RCDRL/11 3/4 5/16 3.1/2
RCDRL/12 7/8 11/32 3.5/8
RCDRL/13 1 3/8 3.3/4
Centre Drill - Long Series 60°
Code Body dia Drill dia OAL
inch
RCDEL/1 1/8 3/64 3
RCDRL/2 1/8 3/64 4
RCDRL/3 1/8 3/64 5
RCDRL/4 1/8 3/64 6
RCDRL/5 3/16 5/64 3
RCDRL/6 3/16 5/64 4
RCDRL/7 3/16 5/64 5
RCDRL/8 3/16 5/64 6
RCDRL/9 1/4 7/64 4
RCDRL/10 1/4 7/64 5
RCDRL/11 1/4 7/64 6
RCDRL/12 5/16 1/8 4
RCDRL/13 5/16 1/8 5
RCDRL/14 5/16 1/8 6
RCDRL/15 7/16 3/16 4
RCDRL/16 7/16 3/16 5
RCDRL/17 7/16 3/16 6
RCDRL/18 1/2 7/32 4
RCDRL/19 1/2 7/32 5
RCDRL/20 1/2 7/32 6
RCDRL/21 5/8 1/4 6
RCDRL/22 3/4 5/16 6