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Nitro Spiral Point Tap
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Nitro Spiral Point Tap

Nitro Spiral Point Tap

Nitro Spiral Point taps are designed with angled flutes at the cutting end. These flutes propel the cuttings forward and down, away from the tool which reduces loading and clogging in the flutes. This feature plus the excellent shearing action of the flutes make the Spiral Point tap ideal for production tapping thru holes. For best results and longest tool life, always use with cutting fluid.

Dimensional SpecificationsSpiral Point Tap

Tap Size Thread Overall
Length		 Length
of Thread		 Number
of Flutes
0 80 1 5/8 5/16 2
1 64 1 11/16 3/8 2
1 72 1 11/16 3/8 2
2 56 1 3/4 7/16 2
2 64 1 3/4 7/16 2
3 48 1 13/16 1/2 2
3 56 1 13/16 1/2 2
4 40 1 7/8 9/16 2
4 48 1 7/8 9/16 2
4 36 1 7/8 9/16 2
5 40 1 15/16 5/8 2
5 44 1 15/16 5/8 2
6 32 2 11/16 2
6 40 2 11/16 2
8 32 2 1/8 3/4 2
8 36 2 1/8 3/4 2
10 24 2 3/8 7/8 2
10 32 2 3/8 7/8 2
12 24 2 3/8 15/16 2
12 28 2 3/8 15/16 2
1/4 20 2 1/2 1 2
1/4 28 2 1/2 1 2
5/16 18 2 23/32 1 1/8 2
5/16 24 2 23/32 1 1/8 2
3/8 16 2 15/16 1 1/4 3
3/8 24 2 15/16 1 1/4 3
7/16 14 3 5/32 1 7/16 3
7/16 20 3 5/32 1 7/16 3
1/2 13 3 3/8 1 21/32 3
1/2 20 3 3/8 1 21/32 3
9/16 12 3 19/32 1 21/32 3
9/16 18 3 19/32 1 21/32 3
5/8 11 3 13/16 1 13/16 3
5/8 18 3 13/16 1 13/16 3
3/4 10 4 1/4 2 3
3/4 16 4 1/4 2 3
  1. All dimensions are in inches.

Tap Drill Chart

Tap Size Drill Size Probable
% Thread
M3-0.5 40 70-79
5-40 38 65-72
5-44 37 63-71
M3.5-0.6 33 72-81
6-32 36 71-78
6-40 33 69-77
M4-0.7 3.25 mm 74-82
8-32 29 62-69
8-36 29 70-78
10-24 25 69-75
10-32 21 68-76
M5-0.8 4.2 mm 69-77
12-24 16 66-72
12-28 15 70-78
M6-1.0 10 76-84
1/4-20 7 70-75
1/4-28 3 72-80
5/16-18 F 72-77
5/16-24 I 67-75
M8-1.25 6.7 mm 74-80
3/8-16 5/16 72-77
3/8-24 Q 71-79
M10-1.50 8.4 mm 76-82
7/16-14 U 70-75
7/16-20 25/64 65-72
M12-1.75 13/32 69-74
1/2-13 27/64 73-78
1/2-20 29/64 65-72
Tap Size Drill Size Probable
% Thread
M14-2.0 15/32 76-81
9/16-12 31/64 68-72
9/16-18 33/64 58-65
5/8-11 17/32 75-79
5/8-18 37/64 58-65
M16-2.0 35/64 76-81
3/4-10 21/32 68-72
3/4-16 11/16 71-77
M20-2.5 11/16 74-78
7/8-9 49/64 72-76
7/8-14 13/16 62-67
M24-3.0 53/64 72-76
1-8 7/8 73-77
1-12 59/64 67-72
1-14 15/16 61-67
1-1/8-7 63/64 72-76
1-1/8-8 1 76
1-1/8-12 1-3/16 66-72
M30-3.5 1-3/64 75
1-1/4-7 1-7/64 76
1-1/4-8 1-1/8 76
1-1/4-12 1-11/64 72
1-3/8-6 1-7/32 72
1-3/8-12 1-19/64 72
M36-4.0 1-1/4 82
1-1/2-6 1-11/32 72
1-1/2-8 1-3/8 76
1-1/2-12 1-27/64 72
NPT Tap Size Taper Pipe
Drill Size		 Straight Pipe
Drill Size
1/8-27 R 11/32
1/4-18 7/16 7/16
3/8-18 37/64 37/64
1/2-14 45/64 23/32
3/4-14 59/64 59/64
1-11.5 1-5/32 1-5/32
1-1/4-11.5 1-31/64 1-1/2
1-1/2-11.5 1-47/64 1-3/4
2-11.5 2-7/32 2-7/32
Nitro Spiral Point Tap
View
Size Thread Pitch Tap Type Item # Availability Price Quantity UOM
1/4 20 Spiral Point TAPS025-20SP In Stock $8.80302/EA EA
5/16 18 Spiral Point TAPS031-18SP In Stock $11.21441/EA EA
3/8 16 Spiral Point TAPS037-16SP In Stock $11.58502/EA EA
7/16 14 Spiral Point TAPS043-14SP In Stock $24.32432/EA EA
1/2 13 Spiral Point TAPS050-13SP In Stock $20.45327/EA EA
5/8 11 Spiral Point TAPS062-11SP 2-4 Working Days $45.41104/EA EA
3/4 10 Spiral Point TAPS075-10SP In Stock $60.92342/EA EA
#6 32 Spiral Point TAPS6-32SP In Stock $12.06897/EA EA
#8 32 Spiral Point TAPS8-32SP In Stock $11.13451/EA EA
#10 24 Spiral Point TAPS10-24SP In Stock $10.72798/EA EA
#10 32 Spiral Point TAPS10-32SP In Stock $12.41682/EA EA