Tapping Heads | McMaster-Carr

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106 Products

Procunier Auto-Reversing Tap Holders for Straight and Morse Taper Spindles

These instantly reversing tap holders allow you to back out of a hole once it has been tapped without stopping the machine's motor. They’re also known as tapping heads. Use them for fast, precise tapping on manually operated drill presses and milling machines. Collets (sold separately) are required to connect the tap to the holder.

Straight Shank

Procunier Number	Shank Dia.	For Tap Size in Aluminum	For Tap Size in Steel	Max Speed, rpm	Material		Each
1-E	1/2"	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5, M6	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No.10, No.12, M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5	3,000	Steel	00000000	0000000
2-E	1/2"	No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M4, M4.5, M5, M6, M6.3, M7, M8, M9, M10, M11, M12, 1/8 Pipe	No. 6, No. 8, No.10, No.12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", M4, M4.5, M5, M6, M6.3, M7, M8	2,000	Steel	00000000	00000000
3-E	3/4"	No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, 1/4 Pipe	No.10, No.12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M6, M6.3, M7, M8, M9, M10, M11, M12	1,000	Steel	00000000	00000000
4-F	3/4"	1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, M18.6, M20, M20.4, M22, M22.5, M24, M26, M27, 1/4 Pipe, 3/8 Pipe, 1/2 Pipe, 3/4 Pipe	1/4", 9/32", 5/16", 11/32", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, M18.6, M20, M20.4, M22, M22.5, M24	800	Steel	00000000	00000000

Morse Taper Shank

Procunier Number	Morse Taper Number	For Tap Size in Aluminum	For Tap Size in Steel	Max. Speed, rpm	Material		Each
1-E	1	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5, M6	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No.10, No.12, M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5	3,000	Steel	00000000	0000000
1-E	2	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5, M6	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No.10, No.12, M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5	3,000	Steel	00000000	000000
2-E	2	No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M4, M4.5, M5, M6, M6.3, M7, M8, M9, M10, M11, M12, 1/8 Pipe	No. 6, No. 8, No.10, No.12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", M4, M4.5, M5, M6, M6.3, M7, M8	2,000	Steel	00000000	00000000
2-E	3	No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M4, M4.5, M5, M6, M6.3, M7, M8, M9, M10, M11, M12, 1/8 Pipe	No. 6, No. 8, No.10, No.12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", M4, M4.5, M5, M6, M6.3, M7, M8	2,000	Steel	00000000	00000000
3-E	2	No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, 1/4 Pipe	No.10, No.12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M6, M6.3, M7, M8, M9, M10, M11, M12	1,000	Steel	00000000	00000000
3-E	3	No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, 1/4 Pipe	No.10, No.12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M6, M6.3, M7, M8, M9, M10, M11, M12	1,000	Steel	00000000	00000000
4-F	3	1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, M18.6, M20, M20.4, M22, M22.5, M24, M26, M27, 1/4 Pipe, 3/8 Pipe, 1/2 Pipe, 3/4 Pipe	1/4", 9/32", 5/16", 11/32", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, M18.6, M20, M20.4, M22, M22.5, M24	800	Steel	00000000	00000000
4-F	4	1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, M18.6, M20, M20.4, M22, M22.5, M24, M26, M27, 1/4 Pipe, 3/8 Pipe, 1/2 Pipe, 3/4 Pipe	1/4", 9/32", 5/16", 11/32", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", M7, M8, M9, M10, M11, M12, M12.5, M14, M15.2, M16, M18, M18.6, M20, M20.4, M22, M22.5, M24	800	Steel	00000000	00000000

Replacement Parts for Procunier Auto-Reversing Tap Holders

Clutch Assembly

Clutch Spring

Collet Nut

Spindle

Stud Nut

Wrench

Clutch Assembly
Procunier Number		Each
1-E	00000000	0000000
2-E	00000000	000000
3-E	00000000	000000
4-F	00000000	000000
Clutch Spring
1-E	00000000	00000
2-E	00000000	00000
3-E	00000000	00000
4-F	00000000	00000
Collet Nut
1-E	0000000	00000
2-E	0000000	00000
3-E	0000000	00000
4-F	0000000	00000
Spindle
1-E	00000000	000000
2-E	00000000	000000
3-E	00000000	000000
4-F	00000000	000000
Stud Nut
1-E	00000000	0000
2-E, 3-E	00000000	0000
4-F	00000000	0000
Wrench
1-E	00000000	00000
2-E	00000000	00000
3-E	00000000	00000
4-F	00000000	00000

Parts for Procunier Auto-Reversing Tap
Holders for Straight and Morse Taper Spindles

Clutch Assembly

Clutch Spring

Collet Nut

Spindle

Stud Nut

Wrench

Clutch Assembly
Procunier Number		Each
1-E	00000000	0000000
2-E	00000000	000000
3-E	00000000	000000
4-F	00000000	000000
Clutch Spring
1-E	00000000	00000
2-E	00000000	00000
3-E	00000000	00000
4-F	00000000	00000
Collet Nut
1-E	0000000	00000
2-E	0000000	00000
3-E	0000000	00000
4-F	0000000	00000
Spindle
1-E	00000000	000000
2-E	00000000	000000
3-E	00000000	000000
4-F	00000000	000000
Stud Nut
1-E	00000000	0000
2-E, 3-E	00000000	0000
4-F	00000000	0000
Wrench
1-E	00000000	00000
2-E	00000000	00000
3-E	00000000	00000
4-F	00000000	00000

Auto-Reversing Tap Holders for Jacobs Taper Shanks

These instantly reversing tap holders allow you to back out of a hole once it has been tapped without stopping the machine's motor. They're also known as tapping heads. Use them for fast, precise tapping on manually operated drill presses and milling machines. Each holder comes with a chart that indicates the maximum speed, which may be lower depending on the tap size and workpiece material.

For technical drawings and 3-D models, click on a part number.

Jacobs Taper 33
For Tap Size	For Use On	Max. Speed, rpm	Material	For Tap Pipe Size		Each
No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", M1.4, M1.6, M1.8, M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5, M6, M6.3, M7	Steel	2,000 rpm	Steel	__	0000000	0000000
No. 6, No. 8, No. 10, No. 12, 1/8", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", M3, M3.5, M4, M4.5, M5, M6, M6.3, M7, M8, M9, M10, M11, M12	Steel	1,500 rpm	Steel	1/8	0000000	00000000

Collets for Auto-Reversing Tap Holders for Jacobs Taper Shanks

Attach taps to auto-reversing tap holders for Jacobs taper shanks.

Manufacturer Model Number	For Tap Size	Body Dia.	Overall Lg.	Material	Jaw Insert Material		Each
J116	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8	0.59"	0.468"	Rubber	Steel	00000000	000000
J117	1/4", 3/16", 7/32", No. 10, No. 12, No. 14	0.59"	0.468"	Rubber	Steel	00000000	00000
J421	1/4", 3/16", 7/32", No. 0, No. 1, No. 10, No. 12, No. 14, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8	0.941"	0.5"	Rubber	Steel	00000000	00000
J422	1/2", 1/4", 11/32", 15/32", 3/8", 5/16", 7/16", 9/32"	0.941"	0.5"	Rubber	Steel	00000000	00000
J423	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8	0.86"	0.5"	Rubber	Steel	00000000	00000

Collets for Auto-Reversing Tap Holders for Jacobs Taper Shanks

Attach taps to auto-reversing tap holders for Jacobs taper shanks.

Manufacturer Model Number	For Tap Size	Body Dia.	Overall Lg.	Material	Jaw Insert Material		Each
J116	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8	0.59"	0.468"	Rubber	Steel	00000000	000000
J117	No. 10, No. 12, No. 14, 3/16", 7/32", 1/4"	0.59"	0.468"	Rubber	Steel	00000000	00000
J421	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, No. 14, 3/16", 7/32", 1/4"	0.941"	0.5"	Rubber	Steel	00000000	00000
J422	1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2"	0.941"	0.5"	Rubber	Steel	00000000	00000
J423	No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8	0.86"	0.5"	Rubber	Steel	00000000	00000

Collets for Procunier Auto-Reversing Tap Holders

Use to attach taps to Procunier auto-reversing tap holders.

For Procunier No. 1-E
For Tap Size	For Tap Pipe Size	Body Dia.	Material		Each
No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6	__	3/8"	Steel	00000000	000000
No. 8	__	3/8"	Steel	00000000	00000
No. 10	__	3/8"	Steel	00000000	00000
No. 12	__	3/8"	Steel	00000000	00000
1/4"	__	3/8"	Steel	00000000	00000
M2.5	__	3/8"	Steel	00000000	00000
M3	__	3/8"	Steel	00000000	00000
M4	__	3/8"	Steel	00000000	00000
M4.5	__	3/8"	Steel	00000000	00000
M5	__	3/8"	Steel	00000000	00000
M6	__	3/8"	Steel	00000000	00000
For Procunier No. 2-E
No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6	__	1/2"	Steel	00000000	00000
No. 8	__	1/2"	Steel	00000000	00000
No. 10	__	1/2"	Steel	00000000	00000
No. 12	__	1/2"	Steel	00000000	00000
1/4"	__	1/2"	Steel	00000000	00000
5/16"	__	1/2"	Steel	00000000	00000
3/8"	__	1/2"	Steel	00000000	00000
7/16"	__	1/2"	Steel	00000000	00000
1/2"	__	1/2"	Steel	00000000	00000
M4	__	1/2"	Steel	00000000	00000
M4.5	__	1/2"	Steel	00000000	00000
M5	__	1/2"	Steel	00000000	00000
M6	__	1/2"	Steel	00000000	00000
M7	__	1/2"	Steel	00000000	00000
M8	__	1/2"	Steel	00000000	00000
For Procunier No. 3-E
No. 8	__	3/4"	Steel	0000000	00000
No. 10	__	3/4"	Steel	00000000	00000
No. 12	__	3/4"	Steel	00000000	00000
1/4"	__	3/4"	Steel	00000000	00000
5/16"	__	3/4"	Steel	00000000	00000
3/8"	__	3/4"	Steel	00000000	00000
7/16"	__	3/4"	Steel	0000000	00000
1/2"	__	3/4"	Steel	00000000	00000
9/16"	__	3/4"	Steel	00000000	00000
5/8"	__	3/4"	Steel	00000000	00000
11/16"	__	3/4"	Steel	00000000	00000
3/4"	__	3/4"	Steel	00000000	00000
__	1/8	3/4"	Steel	0000000	00000
__	1/4	3/4"	Steel	0000000	00000
M4.5	__	3/4"	Steel	00000000	00000
M5	__	3/4"	Steel	00000000	00000
M6	__	3/4"	Steel	00000000	00000
M7	__	3/4"	Steel	00000000	00000
M8	__	3/4"	Steel	00000000	00000
For Procunier No. 4-F
1/4"	__	1"	Steel	00000000	00000
5/16"	__	1"	Steel	00000000	00000
3/8"	__	1"	Steel	00000000	00000
7/16"	__	1"	Steel	00000000	00000
1/2"	__	1"	Steel	00000000	00000
5/8"	__	1"	Steel	00000000	00000
11/16"	__	1"	Steel	00000000	00000
3/4"	__	1"	Steel	00000000	00000
13/16"	__	1"	Steel	00000000	00000
7/8"	__	1"	Steel	00000000	00000
15/16"	__	1"	Steel	00000000	00000
1"	__	1"	Steel	00000000	00000
__	1/8	1"	Steel	00000000	00000
__	1/4	1"	Steel	00000000	00000
__	3/8	1"	Steel	00000000	00000
__	1/2	1"	Steel	00000000	00000
__	3/4	1"	Steel	00000000	00000
M7	__	1"	Steel	00000000	00000
M8	__	1"	Steel	00000000	00000

Procunier Auto-Reversing Tap Holders for Straight and Morse Taper Spindles

Parts for Procunier Auto-Reversing TapHolders for Straight and Morse Taper Spindles

Auto-Reversing Tap Holders for Jacobs Taper Shanks

Collets for Auto-Reversing Tap Holders for Jacobs Taper Shanks

Collets for Procunier Auto-Reversing Tap Holders

Parts for Procunier Auto-Reversing Tap
Holders for Straight and Morse Taper Spindles