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475 SERIES
Diameter
 Flute Length
0.70mm
 .0276"
 9.14mm
 0.360"
0.75mm
 .0295"
 9.14mm
 0.360"
0.80mm
 .0315"
 9.14mm
 0.360"
0.85mm
 .0335"
 9.14mm
 0.360"
0.90mm
 .0354"
 10.16mm
 0.400"
0.95mm
 .0374"
 10.16mm
 0.400"
1.00mm
 .0394"
 10.16mm
 0.400"
1.05mm
 .0413"
 10.16mm
 0.400"
1.10mm
 .0433"
 10.16mm
 0.400"
1.15mm
 .0453"
 10.16mm
 0.400"
1.20mm
 .0472"
 10.16mm
 0.400"
1.25mm
 .0492"
 10.16mm
 0.400"
1.30mm
 .0512"
 10.16mm
 0.400"
1.35mm
 .0531"
 10.16mm
 0.400"
1.40mm
 .0551"
 10.16mm
 0.400"
1.45mm
 .0571"
 10.16mm
 0.400"
1.50mm
 .0591"
 10.16mm
 0.400"
1.55mm
 .0610"
 10.16mm
 0.400"
1.60mm
 .0630"
 10.16mm
 0.400"
1.65mm
 .0650"
 10.16mm
 0.400"
1.70mm
 .0669"
 10.16mm
 0.400"
1.75mm
 .0689"
 10.16mm
 0.400"
1.80mm
 .0709"
 10.16mm
 0.400"
1.85mm
 .0728"
 10.16mm
 0.400"
1.90mm
 .0748"
 10.16mm
 0.400"
1.95mm
 .0768"
 10.16mm
 0.400"
2.00mm
 .0787"
 10.16mm
 0.400"
SERIES 490
Diameter
 Flute Length
#78
 .0160"
 8.26mm
 .325"
#77
 .0180"
 8.26mm
 .325"
#76
 .0200"
 10.16mm
 .400"
#75
 .0210"
 10.16mm
 .400"
0.55mm
 .0217"
 10.16mm
 .400"
#74
 .0225"
 10.16mm
 .400"
0.60mm
 .0236"
 10.16mm
 .400"
#73
 .0240"
 12.00mm
 .475"
#72
 .0250"
 12.00mm
 .475"
.65mm
 .0256"
 12.00mm
 .475"
#71
 .0260"
 12.00mm
 .475"
0.70mm
 .0276"
 13.34mm
 .525"
#70
 .0280"
 13.34mm
 .525"
#69
 .0292"
 13.34mm
 .525"
#68
 .0310"
 13.34mm
 .525"
0.80mm
 .0315"
 13.34mm
 .525"
#67
 .0320"
 13.34mm
 .525"
#66
 .0330"
 13.34mm
 .525"
0.85mm
 .0335"
 13.34mm
 .525"
0.90mm
 .0354"
 13.34mm
 .525"
0.95mm
 .0374"
 13.34mm
 .525"
#62
 .0380"
 13.34mm
 .525"
1.00mm
 .0394"
 13.34mm
 .525"
#60
 .0400"
 13.34mm
 .525"
#59
 .0410"
 13.34mm
 .525"
1.05mm
 .0413"
 13.34mm
 .525"
#58
 .0420"
 13.34mm
 .525"
1.10mm
 .0433"
 13.34mm
 .525"
1.15mm
 .0453"
 13.34mm
 .525"
Diameter
 Flute Length
460 SERIES
 480 SERIES
0.20mm
 .0079"
 3.00mm
 0.118"
 4.00mm
 0.157"
0.25mm
 .0098"
 3.80mm
 0.150"
 5.59mm
 0.220"
0.25mm
 .0098"
 4.70mm
 0.185"
 *
 *
0.30mm
 .0118"
 5.08mm
 0.200"
 7.11mm
 0.280"
0.35mm
 .0138"
 5.59mm
 0.220"
 7.11mm
 0.280"
0.40mm
 .0157"
 5.59mm
 0.220"
 7.49mm
 0.295"
0.45mm
 .0177"
 5.59mm
 0.220"
 7.49mm
 0.295"
0.50mm
 .0197"
 5.59mm
 0.220"
 7.87mm
 0.310"
0.55mm
 .0217"
 6.35mm
 0.250"
 8.64mm
 0.340"
0.60mm
 .0236"
 6.35mm
 0.250"
 8.64mm
 0.340"
0.65mm
 .0256"
 6.35mm
 0.250"
 8.64mm
 0.340"
FDR SPECIAL PRODUCTS, INC.
Serving the Printed Circuit Industry since 1991
UNDERCUTS
Kyocera Tycom produce undercut drills for a variety of  printed circuit
board applications. Undercuts are designed to optimize drilling in high layer
count, heavy  copper applications. The tables below provide available sizes
for each series. From the 475 series medium sized bits to the 460 & 480
advanced design high layer count, high board construction, to the 490 series
for extra long drills for very thick back panel board constructions.
UNDERCUTS SERIES
STANDARD SERIES

MICRO SERIES

UNDERCUT SERIES

ROUTERS

ENDMILLS

SLOTTING

COUNTERSINK

SCORING