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High Speed Bottoming Taps

HS Fractional Bottoming Taps

Fractional Bottoming taps. National Coarse and National Fine. High Speed Steel Taps. Ground Thread.

Please note that not all bottoming taps are flattened at the end.
Some manufacturers leave a point that you may have to grind off if going very close to the bottom of a hole.

Basic tap types:
Taper tap: 5-6 lead threads ground. The easiest tap for starting to thread a hole.
Plug tap: 3-4 lead threads ground. The most common tap: a "middle ground" tap for threading.
Bottoming tap: 1-2 lead threads ground. Used for continuing to thread a blind hole close to the bottom of the hole. It's difficult to start threading a hole with this tap.
Bottoming taps are not necessarily flat on the bottom - they sometimes have a 60 degree tapered point from the manufacturing process.
Spiral Point tap: A tap with a chisled point that pushes metal chips ahead of the forming threads.
Extremely useful for tapping through-holes (ie holes that extend through the work.) Often machine-driven.
Spiral Point taps are not recommended for use in blind holes: the accumulation of chips can tend to bind and break these taps more easily than others.

Recommended drill sizes are for approximately 75% thread.

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 Size Drill Size

$5.20 TAB-0-80
#0-80 HS Bottoming Tap 0300-0015 0-80 3/64"

$5.20 TAB-1-64
#1-64 HS Bottoming Tap 0300-0030 1-64 #54

$5.20 TAB-1-72
#1-72 HS Bottoming Tap 0300-0046 1-72 #53

$4.50 TAB-2-56
#2-56 HS Bottoming Tap 0300-0061 2-56 #51

$4.50 TAB-2-64
#2-64 HS Bottoming Tap 0300-0076 2-64 #50

$3.50 TAB-3-48
#3-48 HS Bottoming Tap 0300-0091 3-48 5/64"

$3.50 TAB-3-56
#3-56 HS Bottoming Tap 0300-0106 3-56 #46

$2.90 TAB-4-36
#4-36 HS Bottoming Tap 0300-0109 4-36 #44

$2.90 TAB-4-40
#4-40 HS Bottoming Tap 0300-0121 4-40 #43

$2.90 TAB-4-48
#4-48 HS Bottoming Tap 0300-0136 4-48 #42

$2.90 TAB-5-40
#5-40 HS Bottoming Tap 0300-0151 5-40 #39

$2.90 TAB-5-44
#5-44 HS Bottoming Tap 0300-0166 5-44 #37

$2.30 TAB-6-32
#6-32 HS Bottoming Tap 0300-0181 6-32 #36

$2.30 TAB-6-40
#6-40 HS Bottoming Tap 0300-0196 6-40 #33

$2.30 TAB-8-32
#8-32 HS Bottoming Tap 0300-0211 8-32 #29

$2.30 TAB-8-36
#8-36 HS Bottoming Tap 0300-0226 8-36 #29

$2.40 TAB-10-24
#10-24 HS Bottoming Tap 0300-0241 10-24 #25

$2.40 TAB-10-32
#10-32 HS Bottoming Tap 0300-0256 10-32 #21

$2.50 TAB-12-24
#12-24 HS Bottoming Tap 0300-0271 12-24 #17

$2.50 TAB-12-28
#12-28 HS Bottoming Tap 0300-0286 12-28 #15

$2.45 TAB-1/4-20
1/4"-20 HS Bottoming Tap 0329-0016 1/4-20 #7

$2.45 TAB-1/4-28
1/4"-28 HS Bottoming Tap 0329-0031 1/4-28 #3

$2.90 TAB-5/16-18
5/16"-18 HS Bottoming Tap 0329-0046 5/16-18 F

$2.90 TAB-5/16-24
5/16"-24 HS Bottoming Tap 0329-0061 5/16-24 I

$3.30 TAB-3/8-16
3/8"-16 HS Bottoming Tap 0329-0076 3/8-16 5/16"

$3.30 TAB-3/8-24
3/8"-24 HS Bottoming Tap 0329-0091 3/8-24 Q

$5.50 TAB-7/16-14
7/16"-14 HS Bottoming Tap 0329-0106 7/16-14 U

$5.50 TAB-7/16-20
7/16"-20 HS Bottoming Tap 0329-0121 7/16-20 W

$6.10 TAB-1/2-13
1/2"-13 HS Bottoming Tap 0329-0136 1/2-13 27/64"

$6.10 TAB-1/2-20
1/2"-20 HS Bottoming Tap 0329-0151 1/2-20 29/64"

$9.50 TAB-9/16-12
9/16"-12 HS Bottoming Tap 0330-0016 9/16-12 31/64"

$9.50 TAB-9/16-18
9/16"-18 HS Bottoming Tap 0330-0031 9/16-18 33/64"

$11.00 TAB-5/8-11
5/8"-11 HS Bottoming Tap 0330-0046 5/8-11 17/32"

$11.00 TAB-5/8-18
5/8"-18 HS Bottoming Tap 0330-0061 5/8-18 37/64"

$16.00 TAB-3/4-10
3/4"-10 HS Bottoming Tap 0330-0076 3/4-10 21/32"

$16.00 TAB-3/4-16
3/4"-16 HS Bottoming Tap 0330-0091 3/4-16 11/16"

$21.50 TAB-7/8-9
7/8"-9 HS Bottoming Tap 0331-0016 7/8-9 49/64"

$21.50 TAB-7/8-14
7/8"-14 HS Bottoming Tap 0331-0031 7/8-14 13/16"

$29.50 TAB-1-8
1"-8 HS Bottoming Tap 0331-0046 1"-8 7/8"

$29.50 TAB-1-12
1"-12 HS Bottoming Tap 0331-0061 1"-12 59/64"

$29.50 TAB-1-14
1"-14 HS Bottoming Tap 0331-0076 1"-14 15/16"

$46.00 TAB-1-1/8-7
1-1/8"-7 HS Bottoming Tap 0331-0091 1 1/8-7 63/64"

$46.00 TAB-1-1/8-12
1-1/8"-12 HS Bottoming Tap 0331-0106 1 1/8-12 1-3/64"

$61.00 TAB-1-1/4-7
1-1/4"-7 HS Bottoming Tap 0331-0121 1 1/4-7 1-7/64"

$61.00 TAB-1-1/4-12
1-1/4"-12 HS Bottoming Tap 0331-0136 1 1/4-12 1-11/64"

$76.00 TAB-1-3/8-6
1-3/8"-6 HS Bottoming Tap 0331-0151 1 3/8-6 1-7/32"

$76.00 TAB-1-3/8-12
1-3/8"-12 HS Bottoming Tap 0331-0166 1 3/8-12 1-19/64"

$87.00 TAB-1-1/2-6
1-1/2"-6 HS Bottoming Tap 0331-0181 1 1/2-6 1-11/32"

$87.00 TAB-1-1/2-12
1-1/2"-12 HS Bottoming Tap 0331-0196 1 1/2-12 1-27/64"

HS Metric Bottoming Taps up to 10mm

Metric Bottoming taps. High Speed Steel. Ground Thread.

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.

Basic tap types:
Taper tap: 5-6 lead threads ground. The easiest tap for starting to thread a hole.
Plug tap: 3-4 lead threads ground. The most common tap: a "middle ground" tap for threading.
Bottoming tap: 1-2 lead threads ground. Used for continuing to thread a blind hole close to the bottom of the hole. It's difficult to start threading a hole with this tap.
Bottoming taps are not necessarily flat on the bottom - they sometimes have a 60 degree tapered point from the manufacturing process.
Spiral Point tap: A tap with a chisled point that pushes metal chips ahead of the forming threads. Extremely useful for tapping through-holes (ie holes that extend through the work.) Often machine-driven. Spiral Point taps are not recommended for use in blind holes: the accumulation of chips can tend to bind and break these taps more easily than others.

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

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

$13.09 TAMB-1.4-.2
1.4mm x .2 HS Bottoming Tap, 0351-2925 1.4 .2

$13.09 TAMB-1.4-.3
1.4mm x .3 HS Bottoming Tap, 0351-2930 1.4 .3

$9.90 TAMB-1.6-.35
1.6mm x .35 HS Bottoming Tap, 0351-2945 1.6 .35

$9.90 TAMB-1.8-.35
1.8mm x .35 HS Bottoming Tap, 0351-2960 1.8 .35

$8.60 TAMB-2-.4
2mm x .4 HS Bottoming Tap, 0351-2975 2 .4

$8.60 TAMB-2-.45
2mm x .45 HS Bottoming Tap, 0351-2980 2 .45

$6.75 TAMB-2.2-.45
2.2mm x .45 HS Bottoming Tap, 0351-2990 2.2 .45

$5.30 TAMB-2.5-.45
2.5mm x .45 HS Bottoming Tap, 0351-3000 2.5 .45

$5.94 TAMB-2.6-.45
2.6mm x .45 HS Bottoming Tap, 0351-3020 2.6 .45

$3.96 TAMB-3-.5
3mm x .5 HS Bottoming Tap, 0351-3035 3 .5

$5.61 TAMB-3-.6
3mm x .6 HS Bottoming Tap, 0351-3040 3 .6

$3.96 TAMB-3.5-.6
3.5mm x .6 HS Bottoming Tap, 0351-3055 3.5 .6

$5.61 TAMB-4-.5
4mm x .5 HS Bottoming Tap, 0351-3065 4 .5

$3.96 TAMB-4-.7
4mm x .7 HS Bottoming Tap, 0351-3070 4 .7

$3.96 TAMB-4-.75
4mm x .75 HS Bottoming Tap, 0351-3075 4 .75

$5.61 TAMB-4.5-.5
4.5mm x .5 HS Bottoming Tap, 0351-3080 4.5 .5

$3.96 TAMB-4.5-.75
4.5mm x .75 HS Bottoming Tap, 0351-3085 4.5 .75

$5.61 TAMB-5-.5
5mm x .5 HS Bottoming Tap, 0351-3090 5 .5

$5.61 TAMB-5-.75
5mm x .75 HS Bottoming Tap, 0351-3100 5 .75

$3.96 TAMB-5-.8
5mm x.8 HS Bottoming Tap, 0351-3105 5 .8

$5.61 TAMB-5-.9
5mm x .9 HS Bottoming Tap, 0351-3110 5 .9

$5.94 TAMB-5-1
5mm x 1.0 HS Bottoming Tap, 0351-3115 5 1

$5.61 TAMB-5.5-.9
5.5mm x .9 HS Bottoming Tap, 0351-3125 5.5 .9

$5.06 TAMB-6-.5
6mm x .5 HS Bottoming Tap, 0351-3130 6 .5

$5.06 TAMB-6-.75
6mm x .75 HS Bottoming Tap, 0351-3135 6 .75

$5.06 TAMB-6-1
6mm x 1.0 HS Bottoming Tap, 0351-3140 6 1

$5.90 TAMB-6.3-1
6.3mm x 1.0 HS Bottoming Tap, 0351-3145 6.3 1

$5.39 TAMB-7-.5
7mm x .5 HS Bottoming Tap, 0351-3150 7 .5

$5.17 TAMB-7-.75
7mm x .75 HS Bottoming Tap, 0351-3155 7 .75

$5.17 TAMB-7-1
7mm x 1.0 HS Bottoming Tap, 0351-3160 7 1

$5.17 TAMB-8-.5
8mm x .5 HS Bottoming Tap, 0351-3170 8 .5

$5.17 TAMB-8-.75
8mm x .75 HS Bottoming Tap, 0351-3175 8 .75

$5.17 TAMB-8-1
8mm x 1.0 HS Bottoming Tap, 0351-3180 8 1

$5.17 TAMB-8-1.25
8mm x 1.25 HS Bottoming Tap, 0351-3185 8 1.25

$5.17 TAMB-8-1.5
8mm x 1.5 HS Bottoming Tap, 0351-3190 8 1.5

$8.25 TAMB-9-.5
9mm x .5 HS Bottoming Tap, 0351-3200 9 .5

$7.40 TAMB-9-.75
9mm x .75 HS Bottoming Tap, 0351-3205 9 .75

$6.90 TAMB-9-1
9mm x 1.0 HS Bottoming Tap, 0351-3210 9 1

$6.90 TAMB-9-1.25
9mm x 1.25 HS Bottoming Tap, 0351-3215 9 1.25

$7.90 TAMB-10-.5
10mm x .5 HS Bottoming Tap, 0351-3230 10 .5

$7.90 TAMB-10-.75
10mm x .75 HS Bottoming Tap, 0351-3235 10 .75

$7.90 TAMB-10-1
10mm x 1.0 HS Bottoming Tap, 0351-3240 10 1

$7.90 TAMB-10-1.25
10mm x 1.25 HS Bottoming Tap, 0351-3245 10 1.25

$7.90 TAMB-10-1.5
10mm x 1.5 HS Bottoming Tap, 0351-3250 10 1.5

11mm and larger HS Metric Bottoming Taps

Metric Bottoming taps. High Speed Steel. Ground Thread.

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.

Basic tap types:
Taper tap: 5-6 lead threads ground. The easiest tap for starting to thread a hole.
Plug tap: 3-4 lead threads ground. The most common tap: a "middle ground" tap for threading.
Bottoming tap: 1-2 lead threads ground. Used for continuing to thread a blind hole close to the bottom of the hole. It's difficult to start threading a hole with this tap.
Bottoming taps are not necessarily flat on the bottom - they sometimes have a 60 degree tapered point from the manufacturing process.
Spiral Point tap: A tap with a chisled point that pushes metal chips ahead of the forming threads. Extremely useful for tapping through-holes (ie holes that extend through the work.) Often machine-driven. Spiral Point taps are not recommended for use in blind holes: the accumulation of chips can tend to bind and break these taps more easily than others.

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

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

$10.90 TAMB-11-.75
11mm x .75 HS Bottoming Tap, 0351-3255 11 .75

$10.90 TAMB-11-1
11mm x 1.0 HS Bottoming Tap, 0351-3260 11 1

$10.90 TAMB-11-1.25
11mm x 1.25 HS Bottoming Tap, 0351-3265 11 1.25

$10.90 TAMB-11-1.5
11mm x 1.5 HS Bottoming Tap, 0351-3270 11 1.5

$10.90 TAMB-12-.5
12mm x .5 HS Bottoming Tap, 0351-2375 12 .5

$10.90 TAMB-12-.75
12mm x .75 HS Bottoming Tap, 0351-3280 12 .75

$10.90 TAMB-12-1
12mm x 1.0 HS Bottoming Tap, 0351-3290 12 1

$10.90 TAMB-12-1.25
12mm x 1.25 HS Bottoming Tap, 0351-3295 12 1.25

$10.90 TAMB-12-1.5
12mm x 1.5 HS Bottoming Tap, 0351-3300 12 1.5

$10.90 TAMB-12-1.75
12mm x 1.75 HS Bottoming Tap, 0351-3305 12 1.75

$17.90 TAMB-13-1
13mm x 1.0 HS Bottoming Tap, 0351-3315 13 1

$17.90 TAMB-13-1.25
13mm x 1.25 HS Bottoming Tap, 0351-3320 13 1.25

$17.90 TAMB-13-1.5
13mm x 1.5 HS Bottoming Tap, 0351-3325 13 1.5

$15.90 TAMB-14-.75
14mm x .75 HS Bottoming Tap, 0351-3345 14 .75

$15.90 TAMB-14-1
14mm x 1.0 HS Bottoming Tap, 0351-3350 14 1

$15.90 TAMB-14-1.25
14mm x 1.25 HS Bottoming Tap, 0351-3355 14 1.25

$15.90 TAMB-14-1.5
14mm x 1.5 HS Bottoming Tap, 0351-3360 14 1.5

$15.90 TAMB-14-2
14mm x 2 HS Bottoming Tap, 0351-3370 14 2

$21.95 TAMB-15-1
15mm x 1.0 HS Bottoming Tap, 0351-3380 15 1

$21.95 TAMB-15-1.5
15mm x 1.5 HS Bottoming Tap, 0351-3390 15 1.5

$21.95 TAMB-16-1
16mm x 1.0 HS Bottoming Tap, 0351-3410 16 1

$21.95 TAMB-16-1.25
16mm x 1.25 HS Bottoming Tap, 0351-3415 16 1.25

$21.95 TAMB-16-1.5
16mm x 1.5 HS Bottoming Tap, 0351-3420 16 1.5
Out of stock
 $21.95 TAMB-16-1.75
16mm x 1.75 HS Bottoming Tap, 0351-3425 16 1.75

$21.95 TAMB-16-2
16mm x 2 HS Bottoming Tap, 0351-3430 16 2

$26.90 TAMB-18-1
18mm x 1.0 HS Bottoming Tap, 0351-3475 18 1

$26.90 TAMB-18-1.5
18mm x 1.5 HS Bottoming Tap, 0351-3485 18 1.5

$26.90 TAMB-18-2
18mm x 2 HS Bottoming Tap, 0351-3495 18 2

$26.90 TAMB-18-2.5
18mm x 2.5 HS Bottoming Tap, 0351-3500 18 2.5

$34.90 TAMB-19-1.5
19mm x 1.5 HS Bottoming Tap, 0351-3515 19 1.5
Out of stock
 $31.20 TAMB-20-1.5
20mm x 1.5 HS Bottoming Tap, 0351-3540 20 1.5
Out of stock
 $31.20 TAMB-20-2.5
20mm x 2.5 HS Bottoming Tap, 0351-3550 20 2.5

$36.00 TAMB-22-1
22mm x 1.0 HS Bottoming Tap, 0351-3580 22 1

$36.00 TAMB-22-1.5
22mm x 1.5 HS Bottoming Tap, 0351-3585 22 1.5

$36.00 TAMB-22-2.5
22mm x 2.5 HS Bottoming Tap, 0351-3595 22 2.5

$40.20 TAMB-24-1.5
24mm x 1.5 HS Bottoming Tap, 0351-3635 24 1.5

$40.20 TAMB-24-2
24mm x 2 HS Bottoming Tap, 0351-3640 24 2

$40.20 TAMB-24-3
24mm x 3 HS Bottoming Tap, 0351-3645 24 3

$67.80 TAMB-25-1.5
25mm x 1.5 HS Bottoming Tap, 0351-3655 25 1.5

$67.80 TAMB-26-1.5
26mm x 1.5 HS Bottoming Tap, 0351-3670 26 1.5

$67.80 TAMB-27-2
27mm x 2 HS Bottoming Tap, 0351-3690 27 2

$67.80 TAMB-27-3
27mm x 3 HS Bottoming Tap, 0351-3700 27 3

$81.00 TAMB-30-1.5
30mm x 1.5 HS Bottoming Tap, 0351-3725 30 1.5

$81.00 TAMB-30-2
30mm x 2 HS Bottoming Tap, 0351-3730 30 2

$85.00 TAMB-30-3.5
30mm x 3.5 HS Bottoming Tap, 0351-3745 30 3.5

$96.47 TAMB-33-3.5
33mm x 3.5 HS Bottoming Tap, 0351-3785 33 3.5

$139.90 TAMB-36-2
36mm x 2 HS Bottoming Tap, 0351-3815 36 2

$129.90 TAMB-36-4
36mm x 4 HS Bottoming Tap, 0351-3825 36 4

$130.00 TAMB-39-3
39mm x 3 HS Bottoming Tap 39 3

$133.54 TAMB-39-4
39mm x 4 HS Bottoming Tap, 0351-3855 39 4

$255.00 TAMB-48-5
48mm x 5 HS Bottoming Tap 48 5

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

$5.20 STW-A
1/16" - 1/4" Straight Tap Wrench 0373-0005 1/16" - 1/4" 0-14 - 1 -5mm 7"

$7.20 STW-B
1/16" - 3/8" Straight Tap Wrench 0373-0010 1/16" - 3/8" 4-14 1/16" 3 - 9mm 8"

$8.50 STW-C
5/32" - 1/2" Straight Tap Wrench 0373-0015 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 0373-0020 3/16" - 3/4" 10-14 1/16 - 1/4" 5 - 18mm 13"

$17.50 STW-E
1/4" - 1-1/8" Straight Tap Wrench 0373-0025 1/4" - 1 1/8" - 1/8 - 1/2" 6 - 28mm 19"

$54.00 STW-G
3/4" - 1-1/2" Straight Tap Wrench 0373-0050 3/4" - 1 1/2" - 3/8 - 1 1/4" 19 - 38mm 35"

$96.00 STW-H
1" - 2-1/2" Straight Tap Wrench 0373-0060 1" - 2 1/2" - 3/4 - 2" 25 -65mm 55"

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Victor Machinery Exchange
12155 Stephens Road
Warren, MI 48089-3962

Email: for all Customer Service, Information, Quote Requests, etc.:
sales@victornet.com

Phone: (800) 723-5359