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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 1/2-13 27/64 15/32
1-64 #53 1.65mm 10-24 #25 11/64 1/2-23 29/64 31/64
1-72 #53 1.7mm 10-32 #21 #16 9/16-12 31/64 17/32
2-56 #50 5/64 12-24 #17 5mm 9/16-18 33/64 13.5mm
2-64 #50 2mm 12-28 #15 #8 5/8-11 17/32 15mm
3-48 #47 #43 1/4-20 #7 #1 5/8-18 37/64 19/32
3-56 #46 2.3mm 1/4-28 #36 #A 3/4-10 21/32 45/64
4-40 #43 #39 5/16-18 #F 7.3mm 3/4-16 11/16 23/32
4-48 #42 2.6mm 5/16-24 #I #M 7/8-9 49/64 .8230
5-40 #39 #33 3/8-16 5/16 #S 7/8-14 13/16 27/32
5-44 #38 2.9mm 3/8-24 #Q #T 1-8 7/8 15/16
6-32 #36 1/8 7/16-14 #U 13/32 1-12 59/64 .9630
6-40 #33 3.2mm 7/16-20 #W 10.5mm 1-14 15/16
8-32 #29 #25 1/2-12 27/64
Taper and Straight Pipe

Pipe Tap Drill Size
Nominal Pipe Tap Taper NPT Straight NPS
1/16-27 #D 1/4
1/8-27 #R 11/32
1/4-28 7/16 29/64
3/8-18 37/64 19/32
1/2-14 23/32 47/64
3/4-14 59/64 15/16
1.0-11.5 1-5/32 1-3/16
1.25-11.5 1-1/2 1-33/64
1.50-11.5 1-47/64 1-3/4
2.0-11.5 2-7/32 2-7/32

Metric Tap and Drill

Tap Size Drill Size Roll Form Tap Size Drill Size Roll Form
M1.6 x 3.5 1.25mm 1.45mm M12 x 1.75 10.25mm 7/16
M2.0 x .40 1.6mm 1.85mm M12 x 1.25 10.75mm
M2.5 x .45 2.05mm 2.30mm M14 x 2.0 12mm 13mm
M3.0 x .50 2.5mm #35 M14 x 1.5 12.5mm
M3.5 x .60 2.9mm #30 M16 x 2.0 14mm 15mm
M4.0 x .70 3.3mm 3.7mm M16 x 1.5 14.5mm
M4.5 x .75 3.75mm M18 x 2.5 15mm
M5.0 x .80 4.2mm #14 M18 x 1.5 16.5mm
M6.0 x 1.0 5mm 5.5mm M20 x 2.5 17.5mm 18.75mm
M7.0 x 1.0 6mm M20 x 1.5 18.5mm
M8.0 x 1.25 6.75mm 7.4mm M24 x 3.0 21mm
M8.0 x 1.0 7mm M30 x 3.5 25.5mm
M10 x 1.50 8.5mm 9.3mm M36 x 4.0 32mm
M10.0 x 1.25 8.75mm

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
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