Knurl Grip SDR Series Micrometer Adjustable Click Wrench

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When the wrench clicks, the designated amount of torque has been applied. Stop pulling. Continuing to pull after the wrench clicks can increase the applied torque to a value that exceeds the engineering specification.

This micrometer adjustable torque wrench measures and applies torque in the clockwise direction. Using this wrench in the counter-clockwise direction will apply torque, but it will not measure torque because it does not click in the counter-clockwise direction.

Specification and Ordering Information

Technical Information

SDR Micrometer Adjustable Click Wrench Dimensions English Units of Measure

Part #	Model	Min Cap	Max Cap	Graduation	A (in.)	B (in.)	C (in.)	D (in.)	Weight (lbs.)	Drive Size (in.)
869749	2 SDR 50 I MG	10 in-lb	50 in-lb	1 in-lb	11.2	1.0	0.8	0.9	1.0	1/4
869750	2 SDR 150 I MG	30 in-lb	150 in-lb	2 in-lb	11.2	1.0	0.8	0.9	1.0	1/4
869781	2 SDR 200 I MG	40 in-lb	200 in-lb	2 in-lb	11.2	1.0	0.8	0.9	1.0	1/4
869751	3 SDR 150 I MG	30 in-lb	150 in-lb	2 in-lb	10.6	1.4	1.1	0.9	1.1	3/8
869761	3 SDR 200 I MG	40 in-lb	200 in-lb	2 in-lb	10.7	1.4	1.1	0.9	1.1	3/8
869748	3 SDR 600 I MG	100 in-lb	600 in-lb	5 in-lb	15.2	1.4	1.1	0.9	1.5	3/8
869752	3 SDR 750 I MG	150 in-lb	750 in-lb	5 in-lb	15.2	1.4	1.1	0.9	1.5	3/8
869747	3 SDR 1200 I MG	200 in-lb	1200 in-lb	10 in-lb	18.8	1.4	1.1	0.9	1.5	3/8
869755	4 SDR 1800 I MG	300 in-lb	1800 in-lb	10 in-lb	19.5	1.9	1.1	0.9	2.0	1/2
869756	3 SDR 75 MG	15 ft-lb	75 ft-lb	.5 ft-lb	15.2	1.4	1.1	0.9	1.5	3/8
869754	3 SDR 100 MG	20 ft-lb	100 ft-lb	1 ft-lb	18.8	1.9	1.1	0.9	1.5	3/8
869757	4 SDR 150 MG	30 ft-lb	150 ft-lb	1 ft-lb	19.5	1.9	1.4	0.9	2.0	1/2
869758	4 SDR 250 MG	50 ft-lb	250 ft-lb	2 ft-lb	25.5	2.7	1.4	1.1	3.5	1/2
810760	6 SDR 300	50 ft-lb	300 ft-lb	2.5 ft-lb	29.0	2.7	2.0	2.0	7.8	3/4
810597*	6 SDR 600	100 ft-lb	600 ft-lb	5 ft-lb	39.2	2.7	2.0	2.0	10.5	3/4
810525**	6 SDR 700	100 ft-lb	700 ft-lb	5 ft-lb	39.2	2.7	2.0	2.0	16.5	3/4

Model Notes:

*The 810597 an optional handle extension part number 853363 may be used. The use of a handle requires recalibration of the wrench.

** The 6 SDR 700 comes from the factory with an extension handle and MUST be used with that handle attached.

Technical Information

SDR Micrometer Adjustable Click Wrench Dimensions Metric Units of Measure

Part #	Model	Min Cap	Max Cap	Graduation	A (mm)	B (mm)	C (mm)	D (mm)	Weight (kg)	Drive Size (in.)
869774	2 SDR 6 Nm MG	1 Nm	6 Nm	0.1 Nm	290	25	21	24	0.5	1/4
869775	2 SDR 20 Nm MG	4 Nm	20 Nm	0.2 Nm	290	25	21	24	0.5	1/4
869776	3 SDR 20 Nm MG	4 Nm	20 Nm	0.2 Nm	302	35	29	24	0.5	3/8
869782	3 SDR 50 Nm MG	10 Nm	50 Nm	0.5 Nm	393	35	29	24	0.7	3/8
869777	3 SDR 100 Nm MG	20 Nm	100 Nm	0.5 Nm	393	35	32	24	0.7	3/8
869797	4 SDR 100 Nm MG	20 Nm	100 Nm	0.5 Nm	393	35	32	24	0.7	1/2
869783	3 SDR 140 Nm MG	30 Nm	140 Nm	1 Nm	473	49	32	24	0.7	3/8
869798	4 SDR 140 Nm MG	30 Nm	140 Nm	1 Nm	473	49	32	24	0.7	1/2 (3/8 body)
869778	4 SDR 200 Nm MG	40 Nm	200 Nm	1 Nm	485	49	33	24	0.9	1/2
869779	4 SDR 300 Nm	60 Nm	300 Nm	2 Nm	618	49	33	27	1.6	1/2
869789	6 SDR 300 Nm	60 Nm	300 Nm	2 Nm	618	49	41	27	1.6	3/4
810598*	6 SDR	150 Nm	800 Nm	5 Nm	989	68	51	51	4.8	3/4

*For the 810598 an optional handle extension part number 853363 may be used. The use of the handle requires wrench recalibration.

Thinking about Ratchet Renewal Kits? Visit the Ratchet Renewal Page.

The Micrometer Adjustable SDR Series - Square Drive Ratchet- Knurl Grip

Have micrometer adjustable click wrenches with the neoprene grip and want to convert to the Knurl Grip handle? You can do it yourself and order the parts by going to the Knurl Grip Conversion Kit page.

Applications

Micrometer Adjustable Fixed Square Drive torque wrenches are ideal for any application where:

The fastener or fitting can be engaged with a socket.
The operator has to frequently change torque values.
High rotation or limited access requires ratcheting to achieve torque level.
Repeatability and reliability are important.
Reducing side load during torque application or testing is imperative.
The ability to quickly select torque value and lock it is needed.
Operational simplicity is needed.
High durability is important.

Small quantity assembly operations, as well as maintenance and repair functions, find the SDR line of wrenches to fit very well with their needs.

Features and Characteristics

Ships in a blow-molded plastic case.
Adjust torque value by rotating the grip.
Grip lock makes locking in torque value fast, easy, and secure.
When in a hurry, our tools change from one end of the scale to the other with the fewest number of turns.
Ball-bearing rock-over assembly assures smooth operation enhances repeatability and increases wrench service life.
The accuracy of +/- 4% of Indicated Value from 20% to 100% of rated capacity.
Meets or exceeds requirements of ASME B107.300-2010 and ISO 6789.
Error Proofing By Guidance design provides a strong audible and tactile impulse when the set torque is achieved.
Error Proofing By Design flattened case provides the mechanism with superior support resulting in a wrench that is easier to calibrate and one that holds calibration longer.
The flattened case prevents side loading during torque application or testing/calibration.
The knurled grip offers an ergonomic grip that remains comfortable over long periods of use.
Changing values with the fewest number of turns save time and energy.
Ratchet is built for durability.
Ratchet replacement is fast and easy when needed.
All tools up to 250 ft-lb capacity come with a rugged, custom-molded plastic case.
Includes FREE tabulated calibration certificate from our ISO 17025 certified calibration laboratory.

Tips From Torque Man

Many people believe that a micrometer adjustable wrench should be set to zero or no load on the spring when work is completed. Many torque wrench mechanisms are held in place by the spring tension. Unloading the spring allows the internal parts to move and can easily cause the wrench to quickly go out of calibration.

You won't find out until the wrench goes in for its annual calibration.

Sturtevant Richmont micrometer adjustable wrenches are engineered with Error Proofing By Design. SR wrenches need only to be taken down to 20% of capacity. Taking the torque setting down to zero or below with our wrenches is not needed. And, it is not possible.

Sturtevant Richmont micrometer adjustable torque wrenches are designed for accuracy, reliability, and durability. To achieve those factors the internal design is dramatically different than other adjustable wrenches.

Accurate. Reliable. Durable. It is all part of our Error Proofing By Design.

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