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LH Taps, Metric and Pipe Sizes

HS Metric Left Hand Taps

Metric Left Hand Plug taps. High Speed Steel. Ground Thread.

Our metric left hand taps are Plug style only.
This is the most common style of hand tap, with 3-4 lead threads ground.
To determine the proper drill size for a metric hole-to-be-tapped, just subtract the pitch of the tap from the diameter of the tap to yield the drill diameter. As an example: a hole-to-be-tapped as 4mm x .7 needs to be drilled with a 3.3mm drill bit.

Follow this link to see the corresponding Dies for these Taps..

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description MM Dia. MM Pitches

$6.00 TAML-1.7-.35
1.7mm x .35 HS LEFT HAND Tap 1.7 mm .35

$6.00 TAML-2-.4
2mm x .4 HS LEFT HAND Tap 2 mm .4

$6.00 TAML-2.6-.45
2.6mm x .45 HS LEFT HAND Tap 2.6 mm .45

$6.00 TAML-3-.5
3mm x .5 HS LEFT HAND Tap 3 mm .5

$6.00 TAML-3.5-.6
3.5mm x .6 HS LEFT HAND Tap 3.5 mm .6

$6.00 TAML-4-.7
4mm x .7 HS LEFT HAND Tap 4 mm .7

$6.00 TAML-4.5-.75
4.5mm x .75 HS LEFT HAND Tap 4.5 mm .75

$6.00 TAML-5-.8
5mm x .8 HS LEFT HAND Tap 5 mm .8

$7.00 TAML-6-1
6mm x 1.0 HS LEFT HAND Tap 6 mm 1

$7.80 TAML-7-1
7mm x 1.0 HS LEFT HAND Tap 7 mm 1

$7.80 TAML-8-1
8mm x 1.0 HS LEFT HAND Tap 8 mm 1.0

$7.80 TAML-8-1.25
8mm x 1.25 HS LEFT HAND Tap 8 mm 1.25

$9.40 TAML-9-1.25
9mm x 1.25 HS LEFT HAND Tap 9 mm 1.25

$12.00 TAML-10-1.25
10mm x 1.25 HS LEFT HAND Tap 10 mm 1.25

$12.00 TAML-10-1.5
10mm x 1.5 HS LEFT HAND Tap 10 mm 1.5

$14.50 TAML-11-1
11mm x 1.0 HS LEFT HAND Tap 11 mm 1.0

$14.50 TAML-12-1.25
12mm x 1.25 HS LEFT HAND Tap 12 mm 1.25

$14.50 TAML-12-1.5
12mm x 1.5 HS LEFT HAND Tap 12 mm 1.5

$14.50 TAML-12-1.75
12mm x 1.75 HS LEFT HAND Tap 12 mm 1.75

$29.00 TAML-14-1
14mm x 1.0 HS LEFT HAND Tap 14 mm 1.0

$20.00 TAML-14-1.5
14mm x 1.5 HS LEFT HAND Tap 14 mm 1.5

$20.00 TAML-14-2
14mm x 2.0 HS LEFT HAND Tap 14 mm 2

$26.00 TAML-16-1.5
16mm x 1.5 HS LEFT HAND Tap 16 mm 1.5

$26.00 TAML-16-2
16mm x 2.0 HS LEFT HAND Tap 16 mm 2

$28.00 TAML-18-1.5
18mm x 1.5 HS LEFT HAND Tap 18 mm 1.5

$28.00 TAML-18-2
18mm x 2.0 HS LEFT HAND Tap 18 mm 2

$28.00 TAML-18-2.5
18mm x 2.5 HS LEFT HAND Tap 18 mm 2.5

$30.00 TAML-20-1.5
20mm x 1.5 HS LEFT HAND Tap 20 mm 1.5
Out of stock
$30.00 TAML-20-2.5
20mm x 2.5 HS LEFT HAND Tap 20 mm 2.5

$56.40 TAML-22-1.5
22mm x 1.5 HS LEFT HAND Tap 22 mm 1.5

$56.40 TAML-22-2.5
22mm x 2.5 HS LEFT HAND Tap 22 mm 2.5

$58.60 TAML-24-1.5
24mm x 1.5 HS LEFT HAND Tap 24 mm 1.5

$76.00 TAML-24-2
24mm x 2.0 HS LEFT HAND Tap 24 mm 2.0

$76.00 TAML-24-3
24mm x 3.0 HS LEFT HAND Tap 24 mm 3.0

Left Hand High Speed Steel NPT Taper Pipe Taps

National Pipe Taper. NPT= 3/4" per foot taper.
High Speed Steel.
Left Hand Threads

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Drill Size

$14.10 NPTLH-1/16
1/16"-27 Left Hand High Speed NPT Tap 1/16 - 27 --

$14.10 NPTLH-1/8
1/8"-27 Left Hand High Speed NPT Tap 1/8 - 27 R

$16.80 NPTLH-1/4
1/4"-18 Left Hand High Speed NPT Tap 1/4 - 18 7/16"

$21.70 NPTLH-3/8
3/8"-18 Left Hand High Speed NPT Tap 3/8 - 18 37/64"

$30.40 NPTLH-1/2
1/2"-14 Left Hand High Speed NPT Tap 1/2 - 14 23/32"

$43.50 NPTLH-3/4
3/4"-14 Left Hand High Speed NPT Tap 3/4 - 14 59/64"

$68.00 NPTLH-1
1"-11 1/2 Left Hand High Speed NPT Tap 1 - 11 1/2 1-5/32"

$103.00 NPTLH-1-1/4
1-1/4"-11 1/2 Left Hand High Speed NPT Tap 1-1/4 - 11-1/2 1-1/2"

$134.00 NPTLH-1-1/2
1-1/2"-11 1/2 Left Hand High Speed NPT Tap 1-1/2 - 11-1/2 1-47/64"

$238.00 NPTLH-2
2"-11 1/2 Left Hand High Speed NPT Tap 2 - 11 1/2 2-7/32"

Left Hand Carbon Steel NPT Taper Pipe Taps

National Pipe Taper. NPT= 3/4" per foot taper.
Carbon Steel.
Special price, limited to quantity in stock.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread

$6.75 NPTLHC-1/16
1/16"-27 Left Hand CS NPT Tap (LIMITED QUANTITY) 1/16 - 27

$6.75 NPTLHC-1/8
1/8"-27 Left Hand CS NPT Tap (LAST ONE) 1/8 - 27

$14.00 NPTLHC-1/2
1/2"-14 Left Hand CS NPT Tap (LIMITED QUANTITY) 1/2 - 14

Tapfree 2 Cutting Fluid

Tapfree 2 Cutting Fluid.
For all metals except magnesium.
Environmentally safe, water-based fluid.
Used for tapping, milling, drilling, etc.
Quickly penetrates to the cutting edge and reduces friction and heat generated during cutting.
Safer than chlorinated solvents or oils.
Intended to be used full strength (primarily through misting or direct application), and not in recirculators. The viscosity of these fluids makes pumping difficult.

Please note: these fluids ship by GROUND ONLY !
These products are NOT available for export.
Quantity Price Model Description

$8.80 CF-T2-PT
Tapfree 2, Pint

$49.50 CF-T2-GA
Tapfree 2, Gallon

Straight Tap Wrenches

Straight-arm tap wrenches.
Straight tap wrenches provide greater force than t-handle tap wrenches.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Hand Taps # Size Taps Pipe Taps MM Taps Approx. Length

$4.95 STW-A
1/16" - 1/4" Straight Tap Wrench 1/16" - 1/4" 0-14 - 1 -5mm 7"

$6.90 STW-B
1/16" - 3/8" Straight Tap Wrench 1/16" - 3/8" 4-14 1/16" 3 - 9mm 8"

$8.50 STW-C
5/32" - 1/2" Straight Tap Wrench 5/32" - 1/2" 7-14 1/16-1/8" 4 - 12mm 10-12" (varies)

$12.50 STW-D
3/16" - 3/4" Straight Tap Wrench 3/16" - 3/4" 10-14 1/16 - 1/4" 5 - 18mm 13"

$15.80 STW-E
1/4" - 1-1/8" Straight Tap Wrench 1/4" - 1 1/8" - 1/8 - 1/2" 6 - 28mm 19"

$49.50 STW-G
3/4" - 1 1/2" Straight Tap Wrench 3/4" - 1 1/2" - 3/8 - 1 1/4" 19 - 38mm 35"

$79.00 STW-H
1" - 2 1/2" Straight Tap Wrench 1" - 2 1/2" - 3/4 - 2" 25 -65mm 55"