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HSS NPT Tap

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HSS NPT Tap

The nominal size of a High Speed Steel Taper Pipe Tap (NPT) is that of the pipe fitting to be tapped, not the actual size of the tap. They are for general use in production tapping or hand operations in a wide range of application material groups.

Products
Dimensional Specifications
Tap Drill Chart

Tap Drill Chart

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

HSS NPT Tap

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Size	Thread Pitch	Tap Type	Item #	Availability	Price	Quantity	UOM
HSS NPT Tap Size 1/8 Quantity Discounts	HSS NPT Tap Thread Pitch 27 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS012-NPT Quantity Discounts	HSS NPT Tap Availability 2-4 Working Days Quantity Discounts	HSS NPT Tap Price $43.23451/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
1/8-27 HIGH SPEED STEEL PIPE TAP $43.23451/EA Qty 2-4 Working Days Product Detail
HSS NPT Tap Size 1/4 Quantity Discounts	HSS NPT Tap Thread Pitch 18 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS025-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $42.86389/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
1/4-18 HIGH SPEED STEEL PIPE TAP $42.86389/EA Qty In Stock Product Detail
HSS NPT Tap Size 3/8 Quantity Discounts	HSS NPT Tap Thread Pitch 18 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS037-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $48.90203/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
3/8-18 HIGH SPEED STEEL PIPE TAP $48.90203/EA Qty In Stock Product Detail
HSS NPT Tap Size 1/2 Quantity Discounts	HSS NPT Tap Thread Pitch 14 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS050-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $84.90991/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
1/2-14 HIGH SPEED STEEL PIPE TAP $84.90991/EA Qty In Stock Product Detail
HSS NPT Tap Size 3/4 Quantity Discounts	HSS NPT Tap Thread Pitch 14 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS075-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $118.4022/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
3/4-14 HIGH SPEED STEEL PIPE TAP $118.4022/EA Qty In Stock Product Detail
HSS NPT Tap Size 1 Quantity Discounts	HSS NPT Tap Thread Pitch 12 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS100-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $170.45028/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
1-11.5 HIGH SPEED STEEL PIPE TAP $170.45028/EA Qty In Stock Product Detail
HSS NPT Tap Size 1 1/4 Quantity Discounts	HSS NPT Tap Thread Pitch 12 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS125-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $219.8249/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
1 1/4-11.5 HIGH SPEED STEEL PIPE TAP $219.8249/EA Qty In Stock Product Detail
HSS NPT Tap Size 1 1/2 Quantity Discounts	HSS NPT Tap Thread Pitch 12 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS150-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $331.43929/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
1 1/2-11.5 HIGH SPEED STEEL PIPE TAP $331.43929/EA Qty In Stock Product Detail
HSS NPT Tap Size 2 Quantity Discounts	HSS NPT Tap Thread Pitch 12 Quantity Discounts	HSS NPT Tap Tap Type NPT Quantity Discounts	HSS NPT Tap Item # TAPS200-NPT Quantity Discounts	HSS NPT Tap Availability In Stock Quantity Discounts	HSS NPT Tap Price $448.64648/EA Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts		See Quantity Discounts	HSS NPT Tap Unit of Measure EA Quantity Discounts
2-11.5 HIGH SPEED STEEL PIPE TAP $448.64648/EA Qty In Stock Product Detail