About Monster Tool - Proven experience in manufacturing quality solid carbide tools for the metalworking industry.
Tech Data - Speeds and Feeds, formulas and starting points for endmills, boring bars, drills, rougher finishers and high performance endmills.
Web Flip Catalog
Ask Monster Tool - Have questions about End Mills, Countersinks, Drills, Reamers, Burrs, Boring Bars or any other tools? Just ask!
Standard Tap and Drill

Tap Size Drill Size Rollform Tap Size Drill Size Rollform Tap Size Drill Size Rollform
0-80 3/64 #54 8-36 #29 #24 1/2-20 29/64 .476
1-64 #53 1.7mm 10-24 #25 11/64 9/16-12 31/64 .521
1-72 #53 1.75mm 10-32 #21 #16 9/16-18 33/64 .536
2-56 #50 2mm 12-24 #16 5mm 5/8-11 17/32 37/64
2-64 #50 2mm 12-28 #14 #7 5/8-18 37/64 .598
3-48 #47 2.3mm 1/4-20 #7 5.75mm 3/4-10 21/32 45/64
3-56 #45 2.3mm 1/4-28 #3 #A 3/4-16 11/16 23/32
4-40 #43 #39 5/16-18 #F 7.25mm 7/8-9 49/64 .8230
4-48 #42 #37 5/16-24 #I .293 7/8-14 13/16 27/32
5-40 #38 #33 3/8-16 5/16 #S 1-8 7/8 15/16
5-44 #37 2.9mm 3/8-24 #Q 9mm 1-12 59/64 .9630
6-32 #36 3.1mm 7/16-14 #U #Y 1 1/8-7 63/64
6-40 #33 1/8 7/16-20 25/64 10.5mm 1 1/8-12 1-3/64
8-32 #29 #25 1/2-13 27/64 .463

Metric Tap and Drill

Tap Size Metric Drill Size Closest Inch Drill Tap Size Metric Drill Size Closest Inch Drill
M1.6 x .35 1.25mm - M12 x 1.75 10.8mm #Y
M2.0 x .40 1.6mm #52 M12 x 1.25 10.8mm 27/64
M2.5 x .45 2.05mm #46 M14 x 2.0 12mm 15/32
M3.0 x .50 2.5mm #40 M14 x 1.5 12.5mm -
M3.5 x .60 2.9mm #33 M16 x 2.0 14mm 35/64
M4.0 x .70 3.3mm #30 M16 x 1.5 14.5mm -
M4.5 x .75 3.7mm #26 M18 x 2.5 15.5mm 39/64
M5.0 x .80 4.2mm #19 M18 x 1.5 16.5mm -
M6.0 x 1.0 5mm #9 M20 x 2.5 17.5mm 11/16
M7.0 x 1.0 6mm 15/64 M20 x 1.5 18.5mm -
M8.0 x 1.25 6.7mm 17/64 M24 x 3.0 21mm 53/64
M8.0 x 1.0 7mm #J M30 x 3.0 26.5mm
M10 x 1.50 8.5mm #Q M36 x 4.0 32mm -
M10.0 x 1.25 8.7mm 11/32
Monster Tool - Burr Monster - SA, SB, SC, SD, SE, SF, SG, SH, SJ, SK, SL, SM, SN Shapes and Mold, Tool and Die Making Carbide Burrs and Burr Sets. Single Cut, Double Cut and Aluma. All solid carbide, C-2 Grade Monster Tool - Drill Monster - Solid Carbide Twist Drills - Jobber Length, Spade Drills, Straight Flute Drill, Stub Drills and Center Drills. TiAlN / TiN Coating available Monster Tool - Mega Monster - High Performance End Mills and Rougher tools. Made from solid premium Micrograin C-2 Solid Carbide Monster Tool - Metal Monster - Solid Carbide Unground Blanks (1000 and 2000 series), STB Strips, Rod, Split End Blanks Monster Tool - Micro Monster - Miniature Decimal Endmills. 2 flute, 4 Flute, Square and Ball nose Regular and Stub lengths Monster Tool - Mill Monster - 2 Flute, 3 Flute Square and Ball nose, Stub, regular, long, extended lengths. Single end, double end, Corner Radius - 30 degrees helix, Right hand spiral, Right Hand Cutting Monster Tool - Ream Monster - Carbide Reamers in fractional, decimal, wire, letter and metric sizes Monster Tool - Tool Monster - HSS and Carbide Countersinks. Single Flute, 3 Flute, 6 Flute. In 60, 82, 90, 100 and 120 degree angles. Countersink sets available in a wooden case