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Use accurate torque controls to improve quality! Case examples can be found in torque handbook 10

HOME > Products > How to select MPQL/MQL/MQSP accessories (older sockets and older marker heads)

How to select MPQL/MQL/MQSP accessories (older sockets and older marker heads)

If you have been using older sockets (sold until May 20, 2016), product compatibility is now different. Check the table below for information on the sockets you are currently using.

Old socket model	Part #	Width across flats W mm / inch	Allowable torque Tmax	Height H	External diameter Φ	Applicable models
Old socket model	Part #	mm / inch	N.m / lbf.inch	mm	mm	Applicable models
4MH-10	1700	10	25	100	17.5	MPQL/MQSP50N ~ MQSP200N4
4MH-12	1701	12	35	100	20.5	MPQL/MQSP50N ~ MQSP200N4
4MH-13	1702	13	40	100	21.5	MPQL/MQSP50N ~ MQSP200N4
4MH-14	1703	14	60	100	22.5	MPQL/MQSP50N ~ MQSP200N4
4MH-16	1704	16	70	100	25	MPQL/MQSP50N ~ MQSP200N4
4MH-7/16	1712	7/16	300	100	20	MPQL/MQSP50N ~ MQSP200N4
4MH-1/2	1713	1/2	400	100	21	MPQL/MQSP50N ~ MQSP200N4
4MH-9/16	1714	9/16	700	100	23	MPQL/MQSP50N ~ MQSP200N4
4MH-5/8	1715	5/8	800	100	25.5	MPQL/MQSP50N ~ MQSP200N4

If you are using any of the above sockets, see here for compatibility >

Old socket model	Part #	Width across flats W mm / inch	Allowable torque Tmax	Height H	External diameter Φ	Applicable models
Old socket model	Part #	mm / inch	N.m / lbf.inch	mm	mm	Applicable models
4MH-17	1705	17	110	100	28	MPQL/MQSP50N ~ MQSP200N4
4MH-18	1706	18	120	105	29	MPQL/MQSP50N ~ MQSP200N4
4MH-19	1707	19	170	105	30	MPQL/MQSP50N ~ MQSP200N4
4MH-22	1709	22	190	105	30	MPQL/MQSP50N ~ MQSP200N4
4MH-24	1710	24	200	105	32.8	MPQL/MQSP50N ~ MQSP200N4
6MH-22	1720	22	255	105	32	MPQL/MQSP50N ~ MQSP200N4
6MH-24	1721	24	255	110	34.5	MQL280N
6MH-27	1722	27	255	110	38.5	MQL280N
6MH-30	1723	30	280	110	42	MQL280N
4MH-11/16	1716	11/16	1000	105	28.5	MPQL/MQSP50N ~ MQSP200N4
4MH-3/4	1717	3/4	1500	105	30	MPQL/MQSP50N ~ MQSP200N4

If you are using any of the above sockets, see here for compatibility >

If you have been using older sockets W16 and smaller (Catalog Nos. 1700 to 1704, or Nos. 1712 to 1715)

Remove the spring in the socket to use the new φ5 marker heads No. 2780 and No. 2782.

* No. 2780: For red and blue ink No. 2782: For white and yellow ink

* A marking diameter of φ9 cannot be used with sockets W16 and smaller. (Only φ5 can be used.)

◆ If you have the older φ5 Marker Head MK53RB (No. 1780) or MK53WY (No. 1782), when you purchase a new socket W16 or smaller (Nos. 2700 to 2704, or Nos. 2712 to 2715), the older marker head will be exchanged for a new one (No. 2780 / No. 2782) free of charge.　

For further details contact Tohnichi Manufacturing Co., Ltd.

If you have been using older sockets W17 or larger (Catalog Nos. 1705 to 1723, or Nos. 1716 or 1717)

Remove the spring and marker guide in the socket to use the new φ9 Marker Head No. 2783 or No. 2785.

* No. 2783: For red and blue ink. No. 2785: For white and yellow ink.

* New marker heads (No. 2780 for red and blue ink, and No. 2782 for white and yellow ink) with a marking diameter of φ5 cannot be used with older sockets.

* When marking with a marking diameter of φ5 with W17 or larger sockets, with new sockets (Catalog Nos. 2705 to 2723) use Marker Head MK53RB (No. 1780/No. 1782), and the Marker Guide No. 2786 or a marker set.

◆ If you have the older φ9 Marker Head MK93RB (No.1783) or MK93WY (No.1785), when you purchase a new socket W17 or larger (Nos. 2705 to 2723, and Nos. 2716 to 2717), the older marker head will be exchanged for a new one (No. 2783 / No. 2785) free of charge.

For further details contact Tohnichi Manufacturing Co., Ltd.

If you have been using older marker heads (sold until May 20, 2016), product compatibility is now different. Check the table below for information on the marker heads you are currently using.

Old marker head Product name	Part #	Color	Marking diameter mm
MK53RB	1780	Red, blue	φ5
MK53WY	1782	White, yellow	φ5

When the above marker heads are used, see here for compatibility >

Old marker head Product name	Part #	Color	Marking diameter mm
MK93RB	1783	Red, blue	φ9
MK93WY	1785	White, yellow	φ9

When the above marker heads are used, see here for compatibility >

If you have been using marker heads MK53RB (No. 1780) and MK53WY (No. 1782)

There has been no change to the design of Marker Head MK53RB (No. 1780) or MK53WY (No. 1782).
If you have been using MK53RB or MK53WY with older sockets W16 or smaller (Nos. 1700 to 1704, Nos. 1712 to 1715), you can continue using Marker Heads MK53RB (No. 1780) and MK53WY (No. 1782).

◆ If you have the φ5 Marker Head MK53RB (No. 1780) or MK53WY (No. 1782), when you purchase a new socket W16 or smaller (Nos. 2700 to 2704, or Nos. 2712 to 2715), the older marker head will be exchanged for a new one (No. 2780 / No. 2782) free of charge.　

For further details contact Tohnichi Manufacturing Co., Ltd.

* If you have marker head MK53RB (No. 1780 / No. 1782), when you purchase a marker guide (No. 2786) and a new socket W17 or larger, you will be able to perform φ5 markings with sockets W17 or larger.

If you have been using Marker Heads MK93RB (No. 1783) and MK93WY (No.1785)

For further details contact Tohnichi Manufacturing Co., Ltd.

Use accurate torque controls to improve quality! Case examples can be found in torque handbook 10

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Use accurate torque controls to improve quality! Case examples can be found in torque handbook 10

How to select MPQL/MQL/MQSP accessories (older sockets and older marker heads)

If you have been using older sockets W16 and smaller (Catalog Nos. 1700 to 1704, or Nos. 1712 to 1715)

Remove the spring in the socket to use the new φ5 marker heads No. 2780 and No. 2782.

If you have been using older sockets W17 or larger (Catalog Nos. 1705 to 1723, or Nos. 1716 or 1717)

Remove the spring and marker guide in the socket to use the new φ9 Marker Head No. 2783 or No. 2785.

If you have been using marker heads MK53RB (No. 1780) and MK53WY (No. 1782)

There has been no change to the design of Marker Head MK53RB (No. 1780) or MK53WY (No. 1782). If you have been using MK53RB or MK53WY with older sockets W16 or smaller (Nos. 1700 to 1704, Nos. 1712 to 1715), you can continue using Marker Heads MK53RB (No. 1780) and MK53WY (No. 1782).

If you have been using Marker Heads MK93RB (No. 1783) and MK93WY (No.1785)

Use accurate torque controls to improve quality! Case examples can be found in torque handbook 10

There has been no change to the design of Marker Head MK53RB (No. 1780) or MK53WY (No. 1782).
If you have been using MK53RB or MK53WY with older sockets W16 or smaller (Nos. 1700 to 1704, Nos. 1712 to 1715), you can continue using Marker Heads MK53RB (No. 1780) and MK53WY (No. 1782).