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1 3/8-12 High Speed Steel Bottom Tap

Selected High Speed Steel Bottom TapM22-2.50 High Speed Steel Bottom Tap
High Speed Steel Bottom TapM22-2.50 High Speed Steel Bottom Tap

Product Specification

Tap Type
Bottom
Bit Decimal
1.3750
Overall Length
6 1/16
Thread Length
3
Material
High Speed Steel
Country of Origin
Domestic
Weight
1.598000
Size
1 3/8

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