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HSS Tap Set

Selected Tap SetHSS Tap Set
Tap SetHSS Tap Set

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.

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
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

Dimensional Specifications

Tap Size Thread Drill Size % of
Thread		 Overall
Length		 Length of
Thread		 Number
of Flutes
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
2 56 50 62-69 1 3/4 7/16 3
2 64 50 70-79 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
5 40 38 65-72 1 5/16 5/8 3
5 44 37 63-71 1 5/16 5/8 3
6 32 36 71-78 2 11/16 3
6 40 33 69-77 2 11/16 3
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
12 24 16 66-72 2 3/8 15/16 4
12 28 15 70-78 2 3/8 15/16 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
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
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
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
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
3/4 10 21/32 68-72 4 1/4 2 4
3/4 16 11/16 71-77 4 1/4 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
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
1 1/8 7 63/64 72-76 5 7/16 2 9/16 4
1 1/8 12 1 3/16 66-72 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
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
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
  1. All dimensions are in inches.