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HSS Tap

Selected High Speed Stel Taper Tap1 7/8-8 High Speed Steel Taper Tap
High Speed Stel Taper Tap1 7/8-8 High Speed Steel Taper Tap

High Speed Steel Straight Flute "Hand Taps" are the most popular and versatile style of taps in general machine tapping operations. They are for general use in production tapping or hand operations in a wide range of application material groups. High Speed Steel Hand Taps are availabile in imperial and metric sizes.

Taper: 7-10 pitch chamfer length. Starts the thread square with the workpiece.

Plug: 3-5 pitch chamfer length. Generally used in through holes.

Bottoming: 1-2 pitch chamfer length. Generates the thread to the bottom.

Sets: Contains 1 each of Taper, Plug, and Bottoming.

Products

Tap Drill Chart

Tap Size Drill Size Probable
% Thread
M1.6-0.35 .35MM 69-77
0-80 80 71-81
1-64 64 59-67
1-72 72 67-75
M2-0.4 .40MM 72-79
2-56 56 62-69
2-64 64 70-79
M2-0.45 .45MM 69-77
3-48 48 70-77
3-56 56 69-78
4-40 40 65-71
4-48 48 61-68
M3-0.5 .50MM 70-79
5-40 40 65-72
5-44 44 63-71
M3.5-0.6 .60MM 72-81
6-32 32 71-78
6-40 40 69-77
M4-0.7 .70MM 69
8-32 32 62-69
8-36 36 70-78
10-24 24 69-75
10-32 32 68-79
M5-0.8 .80MM 69
12-24 16 66-72
12-28 15 70-78
M6-1.0 10 76-84
M6-0.75 4 73
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 17/64 71
M8-1.0 J 66
3/8-16 5/16 72-77
3/8-24 Q 71-79
M10-1.0 8.9MM  
M10-1.50 Q 76-82
M10-1.25 11/32 71
7/16-14 U 70-75
7/16-20 25/64 65-72
M12-1.75 13/32 69-74
M12-1.5 10.5MM  
M12-1.25 27/64 72
1/2-13 27/64 73-78
Tap Size Drill Size Probable
% Thread
1/2-20 29/64 65-72
M14-2.0 15/32 76-81
M14-1.5 12.5MM 71
M14-1.25 12.8MM  
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
M16-1.5 14.5MM 71
M18-2.5 15.8MM 77
M18-2.0 14MM  
M18-1.0 17MM  
3/4-10 21/32 68-72
3/4-16 11/16 71-77
M20-2.5 11/16 74-78
M20-1.5 47/64  
M20-1.0 19MM  
7/8-9 49/64 72-76
7/8-14 13/16 62-67
M22-2.5 49/64 66
M22-1.5 13/16 70
M24-3.0 53/64 72-76
M24-2.0 22MM  
M24-1.5 57/64  
1-8 7/8 73-77
1-12 59/64 67-72
1-14 15/16 61-67
M27-3.0 61/64 72
M27-2.0 63/64 77
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
M33-3.5 1-11/64 74
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

Dimensional Specifications

Tap
Size		 Thread Drill Size Probable
% of
Thread		 Overall
Length		 Length of
Thread		 Number
of Flutes
M1.6 .35MM 1.25MM 69-77 1 5/8 5/16 2
0 80 3/64 71-81 1 11/16 3/8 2
1 64 53 59-67 1 11/16 3/8 2
1 72 53 67-75 1 11/16 3/8 2
M2 .40MM 1/16 72-79 1 3/4 7/16 3
2 56 50 62-69 1 3/4 7/16 3
2 64 50 70-79 1 3/4 7/16 3
M2 .45MM 2.05MM 69-77 1 3/4 7/16 3
3 48 5/64 70-77 1 13/16 1/2 3
3 56 46 69-78 1 13/16 1/2 3
4 40 43 65-71 1 7/8 9/16 3
4 48 42 61-68 1 7/8 9/16 3
M3 .50MM 40 70-79 1 15/16 5/8 3
5 40 38 65-72 1 15/16 5/8 3
5 44 37 63-71 1 15/16 5/8 3
M3.5 .60MM 33 72-81 2 11/16 3
6 32 36 71-78 2 11/16 3
6 40 33 69-77 2 11/16 3
M4 .70MM 30 69 2 1/8 3/4 4
8 32 29 62-69 2 1/8 3/4 4
8 36 29 70-78 2 1/8 3/4 4
10 24 25 69-75 2 3/8 7/8 4
10 32 21 68-79 2 3/8 7/8 4
M5 .80MM 19 69 2 3/8 7/8 4
12 24 16 66-72 2 3/8 15/16 4
12 28 15 70-78 2 3/8 15/16 4
M6 1.00MM 10 76-84 2 1/2 1 4
M6 .75MM 4 73 2 1/2 1 4
1/4 20 7 70-75 2 1/2 1 4
1/4 28 3 72-80 2 1/2 1 4
5/16 18 F 72-77 2 23/32 1 1/8 4
5/16 24 1 67-75 2 23/32 1 1/8 4
M8 1.25MM 17/64 71 2 23/32 1 1/8 4
M8 1.00MM J 66 2 23/32 1 1/8 4
3/8 16 5/16 72-77 2 15/16 1 1/4 4
3/8 24 Q 71-79 2 15/16 1 1/4 4
M10 1.00MM 8.9MM   2 15/16 1 1/4 4
M10 1.50MM Q 75 2 15/16 1 1/4 4
M10 1.25MM 11/32 71 2 15/16 1 1/4 4
7/16 14 U 70-75 3 5/32 1 7/16 4
7/16 20 25/64 65-72 3 5/32 1 7/16 4
M12 1.75MM 13/32 69-74 4 11/16 2 7/32 4
M12 1.50MM 10.50MM   3 3/8 1 21/32 4
M12 1.25MM 27/64 72 2 15/16 1 1/4 4
1/2 13 27/64 73-78 3 3/8 1 21/32 4
1/2 20 29/64 65-72 3 3/8 1 21/32 4
M14 2.00MM 15/32 76-81 3 19/32 1 21/32 4
M14 1.50MM 12.50MM 71 3 19/32 1 21/32 4
M14 1.25MM 12.80MM   3 19/32 1 21/32 4
9/16 12 31/64 68-72 3 19/32 1 21/32 4
9/16 18 33/64 58-65 3 19/32 1 21/32 4
5/8 11 17/32 75-79 3 13/16 1 13/16 4
5/8 18 37/64 58-65 3 13/16 1 13/16 4
M16 2.00MM 35/64 76-81 3 13/16 1 13/16 4
M16 1.50MM 14.50MM 71 3 13/16 1 13/16 4
M18 2.50MM 15.80MM 77 4 1/32 1 13/16 4
M18 2.00MM 14.00MM   4 1/32 1 13/16 4
M18 1.00MM 17.00MM   4 1/32 1 13/16 4
3/4 10 21/32 68-72 4 1/4 2 4
3/4 16 11/16 71-77 4 1/4 2 4
M20 2.50MM 11/16 74-78 4 15/32 2 4
M20 1.50MM 47/64   4 15/32 2 4
M20 1.00MM 19.00MM   4 15/32 2 4
7/8 9 49/64 72-76 4 11/16 2 7/32 4
7/8 14 13/16 62-67 4 11/16 2 7/32 4
M22 2.50MM 49/64 66 4 11/16 2 7/32 4
M22 1.50MM 13/16 70 4 11/16 2 7/32 4
M24 3.00MM 53/64 72-76 4 29/32 2 7/32 4
M24 2.00MM 22.00MM   4 29/32 2 7/32 4
M24 1.50MM 57/64   4 29/32 2 7/32 4
1 8 7/8 73-77 5 1/8 2 1/2 4
1 12 59/64 67-75 5 1/8 2 1/2 4
1 14 15/16 61-67 5 1/8 2 1/2 4
M27 3.00MM 61/64 72 5 1/8 2 1/2 4
M27 2.00MM 63/64 77 5 1/8 2 1/2 4
1 1/8 7 63/64 72-76 5 7/16 2 9/16 4
1 1/8 12 1 3/64 66-72 5 7/16 2 9/16 4
M30 3.50MM 1 3/64 75 5 7/16 2 9/16 4
1 1/4 7 1 7/64 76 5 3/4 2 9/16 4
1 1/4 12 1 11/64 72 5 3/4 2 9/16 6
M33 3.50MM 1 11/64 74 5 3/4 2 9/16 4
1 3/8 6 1 7/32 72 6 1/16 3 4
1 3/8 12 1 19/64 72 6 1/16 3 6
M36 4.00MM 1 1/4 82 6 1/16 3 4
1 1/2 6 1 11/32 72 6 3/8 3 4
1 1/2 12 1 27/64 72 6 3/8 3 6