Sturtevant Richmont M Indicating Torque Wrench

Capacity 110 cNm // 25 / 50 / 100 / 300 ft.lb

Direct Reading Flat Beam Memory Wrench

The SR line of 'Flat Beam' torque wrenches is the direct descendant of those produced by P. A. Sturtevant in the 1930's, and is still among the most accurate and durable of all torque wrenches on the market! The four most important requirements of a torque wrench – accuracy, reliability, durability, low ownership cost – are combined into these exceptional tools. Accuracy is literally ground into the wrench. The service life of these tools is frequently measured in decades!

The special alloy steel beam is ground to a rate of deflection with the use of dead weights, rather than a dimensional tolerance. This process is time consuming and very labor intensive, but the result is a tool that remains accurate as long as the beam is intact and the pointer is on zero under no-load condition.

The flat shape of the beam insures the wrench remains at a right angle to the fastener, reducing or eliminating side-loading error. This unique taper-grinding distributes stress evenly along the entire length of the beam, extending tool life indefinitely. With a minimum of moving parts, these tools are virtually repair and maintenance free.

These torque wrenches are ideal for aircraft assembly and maintenance operations, fastener testing (in-process/final/receivinging inspection) for prevailing torque nuts, and assembly compliance testing for products with rotating components. For these and similar operations, Flat Beam torque wrenches are often the best tool for the job.

Key Features

Incredibly durable design, with a service life frequently measured in decades!
Very low cost of ownership - exceptional accuracy retention permits extended calibration intervals, and they are virtually maintenance and repair free!
Ideal for prevailing-torque and destructive testing applications!
Low mass/low inertia design of pointers helps eliminate reading distortion.
Memory feature consists of fingers that follow a track in the scale and remain in place to indicate the maximum torque achieved.
Pivoted handles concentrate the applied load (force) at a precise point on the lever to assure torque accuracy.
The SR flat beam torque wrenches meet or exceed all requirements of ASME B107.14M and ISO 6789.
Accuracy of SR flat beams is ± 2% of Indicated Value from 20% to 100% of wrench capacity in both directions.
FREE included with each wrench!

Scope of Supply

Torque wrench M
NIST-traceable tabulated certification
Operating instructions

NATO approval (NSN)

5120-00-221-7947 = 850247 = M-600I (1/2)
5120-00-247-2540 = 850198 = M-150
5120-00-541-3001 = 850240 = M-50 (3/8)
5120-00-542-5681 = 850246 = M-600I (3/8)
5120-01-394-4233 = 850234 = M-50I (1/4) = obsolete
5120-01-394-4234 = 850242 = M-50I (3/8)
5120-01-394-4235 = 850191 = M-100I
5120-01-394-4236 = 850211 = M-200I
5120-01-394-4237 = 850228 = M-300I
5120-01-394-4238 = 850246 = M-600I (3/8)
5120-01-394-4239 = 850247 = M-600I (1/2)
5120-01-394-4240 = 850195 = M-1200I
5120-01-394-4241 = 850205 = M-1800I
5120-01-394-4242 = 850240 = M-50 (3/8)
5120-01-394-4243 = 850220 = M-25
5120-01-394-4244 = 850241 = M-50 (1/2)
5120-01-394-4245 = 850190 = M-100
5120-01-394-4247 = 850198 = M-150
5120-01-394-4260 = 850233 = M-32IO
5120-01-394-4262 = 850254 = M-80IO
5120-01-394-4266 = 850238 = M-5I = obsolete
5120-01-394-4267 = 850188 = M-10I
5120-01-394-4268 = 850202 = M-160IO
5120-01-394-4269 = 850222 = M-25I (3/8)
5120-01-394-4272 = 850214 = M-25I (1/4) = obsolete
5120-01-394-4288 = 850227 = M-300
5120-01-394-4290 = 850209 = M-200 = obsolete

M series – S.I.

Model	Item No.	Torque [cN·m]	Torque [N·m]	Graduation	SqD [inch]	Handle	Weight [kg]
M-110 cNm	R 855276	22 - 110	–	5	1/4	B	0.11
M-2.5 Nm	R 855281	–	0.2 - 2.5	0.1	3/8	B	0.16
M-5 Nm	R 855282	–	0.5 - 5	0.2	3/8	B	0.16
M-12 Nm	R 855283	–	1.2 - 12	0.5	3/8	B	0.17
M-22 Nm	R 855284	–	2.2 - 22	1	3/8	H	0.23
M-34 Nm	R 855285	–	3.4 - 34	1	3/8	H	1.25
M-70 Nm	R 855287	–	7 - 70	2	3/8	H	1.25
M-70 Nm	R 855288	–	7 - 70	2	1/2	H	1.25
M-140 Nm	R 855289	–	14 - 140	5	1/2	H	1.33
M-210 Nm	R 855290	–	21 - 210	10	1/2	H	1.70
M-410 Nm	R 855292	–	41 - 410	10	1/2	H	4.88

M series – Ounce-inch

Model	Item No.	Torque [ozf·in]	Graduation	SqD [inch]	Handle	Weight [kg]
M-32 IO	R 850233	3.2 - 32	2	1/4	B	0.10
M-80 IO	R 850254	8 - 80	5	1/4	B	0.11
M-160 IO	R 850202	16 - 160	10	1/4	B	0.11

M series – Pound-inch

Model	Item No.	Torque [lbf·in]	Graduation	SqD [inch]	Handle	Weight [kg]
M-10i	R 850188	1 - 10	0.5	1/4	B	0.11
M-25i	R 850222	2.5 - 25	1	3/8	B	0.16
M-50i	R 850242	5 - 50	2	3/8	B	0.16
M-100i	R 850191	10 - 100	5	3/8	B	0.17
M-200i	R 850211	20 - 200	10	3/8	H	0.23
M-300i	R 850228	30 - 300	10	3/8	H	1.25
M-600i	R 850246	60 - 600	25	3/8	H	1.25
M-600i	R 850247	60 - 600	25	1/2	H	1.25
M-1200i	R 850195	120 - 1200	50	1/2	H	1.33
M-1800i	R 850205	180 - 1800	50	1/2	H	1.70

M series – Pound-foot

Model	Item No.	Torque [lbf·ft]	Graduation	SqD [inch]	Handle	Weight [lb]
M-25	R 850220	2.5 - 25	1	3/8	H	2 3/4
M-50	R 850240	5 - 50	2	3/8	H	2 3/4
M-50	R 850241	5 - 50	2	1/2	H	2 3/4
M-100	R 850190	10 - 100	5	1/2	H	2 3/4
M-150	R 850198	15 - 150	5	1/2	H	3 3/4
M-300	R 850227	30 - 300	10	3/4	H	10 3/4

The table shows the torque ranges specified by the manufacturer. Usage in the medium range (approx. 1/3 to 4/5 of rated capacity) is recommended. If you would regularly work close to the load capacity limit, in general a larger tool may be more recommendable.

All technical data without guarantee, errors and omissions excepted.

Handle shape "B" = ball, Handle shape "H" = handle.