Single-Point Load Cells | McMaster-Carr

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63 Products

Configurable Tension and Compression Force Sensors

Calibrate these sensors to your desired capacity to measure tension, compression, or both. Also known as load cells, they measure and track the forces of your equipment by converting them into electrical signals. Send these signals to your computer or programmable logic controller (PLC) to monitor, document, and trigger actions in your machinery.

When choosing a sensor, consider whether you’ll be measuring tension, compression, or both. Select sensors with a capacity rating higher than the greatest load you expect them to receive. They’re designed to briefly handle forces 1.5 times their load capacity to protect from overload. Choose between a rectangle, round, or S-shape sensor to best suit your application.

For the most accurate measurements, calibrate these sensors to your data acquisition system or display.

Rectangle


With 4 Threaded Holes	With 8 Threaded Through Holes	With 4 Threaded Through Holes

Rectangle sensors are also known as single-point or shear beam load cells. They can be used in multiples across surfaces to measure uneven loads. They’re often used in bench-top and floor scales where loads are often unbalanced. They’re also used in packaging, machine bins, conveyors, and chutes.

IP65 Enclosure Rating—IP65 sensors stand up to splashing water.

IP66 Enclosure Rating—IP66 sensors stand up to spraying water.

IP67 Enclosure Rating—IP67 sensors won’t fail if briefly submerged.

Enclosure Rating—IP-rated sensors seal out dust.

	Thread Size	Lg.	Wd.	Ht.	Sensor Material	Temp. Range, ° F	Enclosure Rating		Each
Measures Tension and Compression







	With 4 Threaded Through Holes

	10.5 oz., 300 g	±0.0021 oz., ±0.06 g	0.001 oz., 0.01 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	IP66	3487N356	0000000


	2.2 lb., 1 kg	±0.007 oz., ±0.2 g	0.001 oz., 0.1 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	IP66	3487N357	000000
	4.4 lb., 2 kg	±0.014 oz., ±0.4 g	0.001 oz., 0.1 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	IP66	3487N358	000000
	6.6 lb., 3 kg	±0.016 oz., ±0.5 g	0.001 oz., 0.1 g	M6 × 1 mm	5 1/8"	1 3/16"	7/8"	Aluminum	15 to 100	IP65	3487N511	000000
	6.6 lb., 3 kg	±0.021 oz., ±0.6 g	0.01 oz., 0.1 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	IP66	3487N359	000000
	11 lb., 5 kg	±0.026 oz., ±0.8 g	0.01 oz., 0.1 g	M6 × 1 mm	5 1/8"	1 3/16"	7/8"	Aluminum	15 to 100	IP65	3487N512	000000
	22 lb., 10 kg	±0.053 oz., ±1.5 g	0.01 oz., 0.1 g	M6 × 1 mm	5 1/8"	1 3/16"	7/8"	Aluminum	15 to 100	IP65	3487N513	000000
	44 lb., 20 kg	±0.11 oz., ±3 g	0.01 oz., 0.001 kg	M6 × 1 mm	5 1/8"	1 3/16"	7/8"	Aluminum	15 to 100	IP65	3487N514	000000




			With 8 Threaded Through Holes

			110 lb., 50 kg	±0.35 oz., ±10 g	0.01 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	1 3/16"	Alloy Steel	15 to 100	—	3487N39	000000


			Measures Tension and Compression Legal-for-Trade







							With 4 Threaded Holes

							22 lb., 10 kg	±0.07 oz., ±2 g	0.01 lb., 0.001 kg	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	IP67	3487N418	000000


							44 lb., 20 kg	±0.14 oz., ±4 g	0.01 lb., 0.001 kg	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	IP67	3487N419	000000
							110 lb., 50 kg	±0.35 oz., ±10 g	0.01 lb., 0.01 kg	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	IP67	3487N42	000000
							220 lb., 100 kg	±0.7 oz., ±20 g	0.01 oz., 0.001 g	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	IP67	3487N421	000000

Load Cell Junction Boxes

Connection hubs combine the measurements of multiple tension and compression force sensors together.

				Housing
For No. of Sensors	Lg.	Wd.	Ht.	Material	Color	Temp. Range, ° F	Enclosure Rating		Each
2	7 11/16"	4 15/16"	1 1/2"	Aluminum	Blue	-40 to 185	IP66	6131N11	0000000
4	7 11/16"	7 1/4"	1 1/2"	Aluminum	Blue	-40 to 185	IP66	6131N12	000000

Ready-to-Use Tension and Compression Force Sensors

Already calibrated, these sensors are ready to use right out of the box. Use them to measure forces in equipment by converting forces into electrical signals. They’re also used as the foundation within custom-built scales and force gauges, and to measure force in crash tests and other quality control processes. These sensors are also known as load cells.

When choosing a sensor, consider whether you’ll be measuring tension, compression, or both. Select sensors with a capacity rating higher than the greatest load you expect them to receive. They’re designed to briefly handle forces over their load capacity to protect from overload. Choose between a rectangle, round, S-shape, or cylinder sensor to best suit your application.

For the most accurate measurements, these sensors may need to be recalibrated.

Rectangle


With 4 Threaded Through Holes	With 6 Threaded Holes

With 8 Threaded Holes	With 8 Threaded Through Holes

IP68 Enclosure Rating— IP67 and IP68 sensors won’t fail if briefly submerged.

Legal-for-Trade—Legal-for-trade sensors are NTEP approved for use with equipment that measures materials sold by weight.

Enclosure Rating—IP-rated sensors seal out dust.

	Wt. Cap.	Accuracy	Wt. Measuring Increments	Thread Size	Lg.	Wd.	Ht.	Sensor Material	Temp. Range, ° F	Enclosure Rating		Each
Measures Tension and Compression







				With 8 Threaded Holes

				1,650 lb.; 750 kg	±7.9 oz., ±225 g	0.1 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	2 9/16"	Aluminum	15 to 100	—	6131N29	0000000




						With 8 Threaded Through Holes

						550 lb.; 250 kg	±1.8 oz., ±50 g	0.01 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	1 3/16"	Alloy Steel	15 to 100	—	6131N27	000000


						Measures Compression Not Legal-for-Trade







										With 4 Threaded Through Holes

										10.5 oz.; 300 g	±0.003 oz., ±0.09 g	0.01 oz., 0.1 g	M3 × 0.5 mm	2 3/4"	1/2"	7/8"	Aluminum	-30 to 145	IP65	6131N31	000000


										1.3 lb.; 600 g	±0.006 oz., ±0.18 g	0.01 oz., 0.1 g	M3 × 0.5 mm	2 3/4"	1/2"	7/8"	Aluminum	-30 to 145	IP65	6131N32	000000
										2.2 lb.; 1 kg	±0.01 oz., ±0.3 g	0.01 oz., 0.001 kg	M3 × 0.5 mm	2 3/4"	1/2"	7/8"	Aluminum	-30 to 145	IP65	6131N33	000000
										6.6 lb.; 3 kg	±0.03 oz., ±0.9 g	0.01 lb., 0.001 kg	M3 × 0.5 mm	2 3/4"	1/2"	7/8"	Aluminum	-30 to 145	IP65	6131N34	000000




												With 8 Threaded Holes

												1,650 lb.; 750 kg	±7.9 oz., ±225 g	0.1 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	2 9/16"	Aluminum	15 to 100	—	6131N28	000000




														With 8 Threaded Through Holes

														550 lb.; 250 kg	±1.8 oz., ±50 g	0.01 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	1 3/16"	Alloy Steel	15 to 100	—	6131N26	000000


														Measures Compression Legal-for-Trade







																		With 6 Threaded Holes

																		22 lb.; 10 kg	±0.07 oz., ±2 g	0.01 lb., 0.001 kg	M6 × 1 mm	5 7/8"	1"	1 9/16"	Aluminum	-30 to 145	IP65	6131N35	000000


44 lb.; 20 kg																		±0.14 oz., ±4 g	0.01 lb., 0.01 kg	M6 × 1 mm	5 7/8"	1"	1 9/16"	Aluminum	-30 to 145	IP65	6131N36	000000
110 lb.; 50 kg	±0.35 oz., ±10 g																	0.01 lb., 0.01 kg	M6 × 1 mm	5 7/8"	1"	1 9/16"	Aluminum	-30 to 145	IP65	6131N37	000000
220 lb.; 100 kg	±0.7 oz., ±20 g																	0.1 lb., 0.01 kg	M6 × 1 mm	5 7/8"	1"	1 9/16"	Aluminum	-30 to 145	IP65	6131N38	000000




		With 8 Threaded Holes

		330 lb.; 150 kg	±1.1 oz., ±30 g															0.1 lb., 0.1 kg	5/16"-18	7 1/2"	3"	3"	Aluminum	-30 to 145	IP65	6131N39	000000


		440 lb.; 200 kg	±1.4 oz., ±40 g															0.1 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	1 3/4"	2 1/2"	17-4 PH Stainless Steel	-30 to 145	IP68, IP69K	6131N42	000000
		1,100 lb.; 500 kg	±3.5 oz., ±100 g	0.1 lb., 0.1 kg														M8 × 1.25 mm	6 7/8"	1 3/4"	2 1/2"	17-4 PH Stainless Steel	-30 to 145	IP68, IP69K	6131N43	000000
		1,100 lb.; 500 kg	±3.5 oz., ±100 g	1 lb., 1 kg	5/16"-18													7 1/2"	3"	3"	Aluminum	-30 to 145	IP65	6131N41	000000

Load Cell Junction Boxes

Junction Boxes bring multiple sensors together to create a single system. They’re often used in platform or hopper scales when multiple sensors need to work together to give a total weight reading.

				Housing
For No. of Sensors	Lg.	Wd.	Ht.	Material	Color	Temp. Range, ° F	Enclosure Rating		Each
2	7 11/16"	4 15/16"	1 1/2"	Aluminum	Blue	-40 to 185	IP66	6131N11	0000000
4	7 11/16"	7 1/4"	1 1/2"	Aluminum	Blue	-40 to 185	IP66	6131N12	000000

Cylinder

Cylinder sensors are commonly used for platform, belt, hopper, and packaging scales. They resist corrosion and frequent washdowns.

IP68 Enclosure Rating— IP67 and IP68 sensors won’t fail if briefly submerged.

Legal-for-Trade—Legal-for-trade sensors are NTEP approved for use with equipment that measures materials sold by weight.

Enclosure Rating—IP-rated sensors seal out dust.

	Thread Size	Dia.	Lg.	Sensor Material	Temp. Range, ° F	Enclosure Rating		Each
Measures Compression Legal-for-Trade







	With 3 Through Holes

	65 lb.; 30 kg	±0.2 oz., ±6 g	0.01 lb., 0.01 kg	M8	1 1/2"	4 3/4"	17-4 PH Stainless Steel	-30 to 145	IP68	6131N75	0000000


	220 lb.; 100 kg	±0.7 oz., ±20 g	0.1 lb., 0.01 kg	M8	1 1/2"	4 3/4"	17-4 PH Stainless Steel	-30 to 145	IP68	6131N76	000000
	440 lb.; 200 kg	±1.4 oz., ±40 g	0.1 lb., 0.01 kg	M8	1 1/2"	4 3/4"	17-4 PH Stainless Steel	-30 to 145	IP68	6131N77	000000
	1,100 lb.; 500 kg	±3.5 oz., ±100 g	0.1 lb., 0.1 kg	M10	1 1/2"	4 3/4"	17-4 PH Stainless Steel	-30 to 145	IP68	6131N78	000000

Load Cell Junction Boxes

Junction Boxes bring multiple sensors together to create a single system. They’re often used in platform or hopper scales when multiple sensors need to work together to give a total weight reading.

				Housing
For No. of Sensors	Lg.	Wd.	Ht.	Material	Color	Temp. Range, ° F	Enclosure Rating		Each
2	7 11/16"	4 15/16"	1 1/2"	Aluminum	Blue	-40 to 185	IP66	6131N11	0000000
4	7 11/16"	7 1/4"	1 1/2"	Aluminum	Blue	-40 to 185	IP66	6131N12	000000

Ready-to-Use Tension and Compression Force Sensor Kits

With a sensor that’s already calibrated and everything you need to relay data, these kits come ready to operate. Use them to measure forces in equipment and send the data directly to a computer or programmable logic controller (PLC) to monitor, document, and trigger actions in machinery. They’re also used as the foundation within custom-built scales and force gauges, and to measure force in crash tests and other quality control processes. These sensors are also known as load cells.

Rectangle


PC Connection Kit	PLC Connection Kit

Wireless PC Connection Kit


With 4 Threaded Holes	With 4 Threaded Through Holes

With 8 Threaded Holes	With 8 Threaded Through Holes

IP66 Enclosure Rating— IP66 rated sensors stand up to spraying water.

IP67 Enclosure Rating—IP67 rated sensors won’t fail if briefly submerged.

Threaded Through Hole—Sensors with a threaded through hole are also known as pancake load cells. They can be bolted to surfaces in any orientation and are commonly used to measure clamping forces

PC Connection Kits—PC connection kits link to a computer, tablet, or LCD display. All include a calibrated force sensor, a data conversion hub, and data-recording software. The conversion hub turns electrical signals from the sensor into usable force measurements. The software plots and analyzes measurements, so you can track high, low, and average values over time. It can also set off connected alarms or notify you when readings fall outside a set range. Export the data to Microsoft Excel and other analytical software such as MATLAB and LabVIEW. Wired PC connection kits come with a 6-ft. hub-to-PC USB cord.

PLC Connection Kits—PLC connection kits send an analog signal to your PLC to trigger actions such as diverting items that exceed a certain weight on a conveyor. They include a calibrated sensor and a data conversion hub. They’re not for use with LCD displays.

Wireless PC Connection Kits—Wireless PC connection kits transmit data over Wi-Fi to your computer from their conversion hub without a cord.

Enclosure Rating—IP rated sensors seal out dust.

										PC Connection Kits		PLC Connection Kits		Wireless PC Connection Kits
	Wt. Cap.	Accuracy	Wt. Measuring Increments	Thread Size	Lg.	Wd.	Ht.	Sensor Material	Temp. Range, ° F		Each		Each		Each
Measures Compression and Tension (Not Legal-for-Trade)







				With 8 Threaded Holes

				1,650 lb.; 750 kg	±7.9 oz., ±225 g	0.1 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	2 9/16"	Aluminum	15 to 100	6384N14	000000000	———	0	———	0




						With 8 Threaded Through Holes

						110 lb.; 50 kg	±0.35 oz., ±10 g	0.01 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	1 3/16"	Alloy Steel	15 to 100	3487N402	00000000	3487N414	000000000	———	0


						Measures Compression, and Tension—IP66 Rated (Not Legal-for-Trade)







										With 4 Threaded Through Holes

										10.5 oz.; 300 g	±0.0021 oz., ±0.06 g	0.001 oz., 0.01 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	3487N371	000000	3487N386	000000	———	0


										2.2 lb.; 1 kg	±0.007 oz., ±0.2 g	0.001 oz., 0.1 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	3487N372	000000	3487N387	000000	———	0
										4.4 lb.; 2 kg	±0.014 oz., ±0.4 g	0.001 oz., 0.1 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	3487N373	000000	3487N388	000000	———	0
										6.6 lb.; 3 kg	±0.021 oz., ±0.6 g	0.01 oz., 0.1 g	M3 × 0.5 mm	2 13/16"	1/2"	3/4"	Aluminum	15 to 100	3487N374	000000	3487N389	000000	———	0


										Measures Compression and Tension—IP65 Rated (Not Legal-for-Trade)







														With 4 Threaded Through Holes

														22 lb.; 10 kg	±0.053 oz., ±1.5 g	0.01 oz., 0.1 g	M6 × 1 mm	5 1/8"	1 3/16"	7/8"	Aluminum	15 to 100	6384N12	000000	———	0	———	0


														44 lb.; 20 kg	±0.11 oz., ±3 g	0.01 oz., 1 kg	M6 × 1 mm	5 1/8"	1 3/16"	7/8"	Aluminum	15 to 100	6384N13	000000	———	0	———	0


														Measures Compression (Not Legal-for-Trade)







																		With 8 Threaded Holes

																		1,650 lb.; 750 kg	±7.9 oz., ±225 g	0.1 lb., 0.01 kg	M8 × 1.25 mm	6 7/8"	2 3/8"	2 9/16"	Aluminum	15 to 100	6384N11	000000	———	0	6384N19	000000000


Measures Compression and Tension—IP67 Rated (Legal-for-Trade)







																		With 4 Threaded Holes

																		22 lb.; 10 kg	±0.07 oz., ±2 g	0.01 lb., 1 kg	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	3487N43	000000	3487N442	000000	———	0


				44 lb.; 20 kg	±0.14 oz., ±4 g													0.01 lb., 1 kg	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	3487N431	000000	3487N443	000000	———	0
				110 lb.; 50 kg	±0.35 oz., ±10 g													0.01 lb., 0.01 kg	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	3487N432	000000	3487N444	000000	———	0
				220 lb.; 100 kg	±0.7 oz., ±20 g													0.01 oz., 1 g	1/4"-20	5 15/16"	1"	1 9/16"	Aluminum	15 to 100	3487N433	000000	3487N445	000000	———	0




						With 8 Threaded Holes

						550 lb.; 250 kg	±1.8 oz., ±50 g											0.01 lb., 0.01 kg	5/16"-18	7 3/8"	2 1/2"	2 7/16"	Aluminum	15 to 100	6384N15	00000000	———	0	———	0


						1,100 lb.; 500 kg	±3.5 oz., ±100 g	0.1 lb., 0.01 kg										5/16"-18	7 3/8"	2 1/2"	2 7/16"	Aluminum	15 to 100	6384N16	00000000	———	0	———	0

Accessories for Load Cells

Component	Display Type	For No. of Sensors		Each
Display	Digital	1	3487N487	0000000
Display	Digital	4	3487N488	000000

		Each
Data-Recording Software	3487N491	0000000

Load Cell Junction Boxes

Also known as summing boxes, these junction boxes combine the measurements of multiple load cells together.

For No. of Sensors	Lg.	Wd.	Ht.	Housing Material	Housing Color	Data Connection	Temp. Range, ° F	Enclosure Rating		Each
2	7 11/16"	4 15/16"	1 1/2"	Aluminum	Blue	Screw Terminal	-40 to 185	IP66	6131N11	0000000
4	7 11/16"	7 1/4"	1 1/2"	Aluminum	Blue	Screw Terminal	-40 to 185	IP66	6131N12	000000