Externally-Threaded Gauges | McMaster-Carr

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System of Measurement

Pipe Size

Thread Type

Metric Trapezoidal

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

For Use With

Alcohol-Based Solvents

Grease Fittings

Liquids with Solids

Acetic Acid (White Vinegar)

Connection Location

Dial Diameter

REACH

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

Measurement Unit

Centimeters of Mercury

Inches of Mercury

Inches of Water

Kilograms per Square Centimeter

Liters per Minute

Millimeters of Mercury

Ounces per Square Inch

Pounds per Square Inch

DFARS Specialty Metals

Gender

Display Type

Thread Size

Graduations

Maximum Pressure

Less than 1,000 psi

1,000 psi to 1,999.9 psi

2,000 psi to 2,999.9 psi

3,000 psi to 9,999.9 psi

10,000 psi or greater

Less than 10,000 kPa

10,000 kPa to 19,999 kPa

20,000 kPa to 29,999 kPa

30,000 kPa to 99,999 kPa

100,000 kPa or greater

Material

Graphite Composite

Magnesium Oxide

Measures

Differential Pressure

Relative Humidity

Static Pressure Drop

Fitting Connection

Push to Connect

Quick Disconnect

Mount Type

Maximum Temperature

Less than 250° F

250° F to 499° F

500° F to 999° F

1,000° F to 1,999° F

2,000° F or greater

Less than 50° C

50° C to 99° C

100° C to 149° C

150° C to 199° C

200° C or greater

Dial Type

Connects To

Lens Material

Polyurethane Rubber

Scale Type

Pressure Numeric Increments

How can we improve?

9,857 Products

Measuring and Inspecting

Plug Gauge Handles

Plug Gauge Handles

Add both a go gauge and a no-go gauge to create a custom tool for checking hole diameters

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

Ring Gauges

Confirm your workpiece's outer diameter or external threads are within tolerance

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

Depth Micrometers

Depth Micrometers

Measure slots, counterbores, and other holes more precisely than depth gauges

Shaft Alignment Kits

Shaft Alignment Kits

Confirm that shafts are aligned or measure the degree of their misalignment

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

Torque Gauges

Test the accuracy of torque wrenches and screwdrivers

Levels

Ensure surfaces are completely horizontal or vertical

Variance Indicators

Variance Indicators

Identify small dimensional differences when checking part quality and alignment

Data Recorders

Log temperature, humidity, or pressure levels to track changes and troubleshoot your system

Gas Leak Detectors

Gas Leak Detectors

Find gas leaks in pipes, tubes, fittings, tanks, cylinders, and valves

Thread Size Identifiers

Thread Size Identifiers

Confirm your fastener's thread size, pitch, or threads per inch

Variance Indicator Clamps

Variance Indicator Clamps

Secure and position indicators, arms, and other components on holders

Data Recorder Charts

Data Recorder Charts

Place in temperature and humidity data recorders to document readings over time

Threaded Hole Location Gauges

Threaded Hole Location Gauges

Pinpoint the true center of threaded holes to precisely align and measure parts

Bore Gauge Heads

Bore Gauge Heads

Swap the head on your Mitutoyo electronic bore gauge for one with a different measuring range

Plug Gauge Drivers

Plug Gauge Drivers

Test thread tolerance in seconds to save time during high-volume work

Fluid Handling

Gauge Siphon Tubes

Gauge Siphon Tubes

Fill with water to protect dry gauges from steam and high-temperature liquids; also called pigtails

Thermocouple and RTD Protection Tubes

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

Sights

Observe and monitor the contents of pipes, tanks, and other containers

Flow Sights

Visually confirm flow and inspect liquid color and clarity

Pressure Gauges

Pressure Gauges

Measure pressure in pumps, filters, regulators, and process lines

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

Liquid-Level Transmitters

Liquid-Level Transmitters

Send liquid-level data to logging and monitoring equipment

Pressure Gauge Snubbers

Pressure Gauge Snubbers

Reduce flow to suppress vibration and pressure spikes that can damage gauges

Temperature and Humidity Transmitters

Temperature and Humidity Transmitters

Regulate heating and cooling by sending temperature and humidity levels to PLCs and controllers

RTD Connectors

Attach plug-in connectors to RTD probes with wire leads

Vacuum Test Gauges

Vacuum Test Gauges

Verify that equipment is taking accurate vacuum measurements

Thermocouple Connectors

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

Thermowells

Prevent damage to thermometers and temperature probes in pressurized tanks and pipelines

Pressure and Vacuum Transmitters

Pressure and Vacuum Transmitters

Convert pressure and vacuum measurements into a signal sent to remote displays and controllers

Pressure Transmitters

Pressure Transmitters

Send pressure readings to controllers and remote displays

Vacuum Transmitters

Vacuum Transmitters

Transfer vacuum measurements to remote displays and controllers

Pressure Test Gauges

Pressure Test Gauges

Check and calibrate pressure gauges, transmitters, and equipment to maintain accuracy

Vacuum Gauges

Take vacuum readings in pumps, packaging equipment, and suction lines

Pressure Indicators

Pressure Indicators

Turn green when your compressed air line reaches a certain psi

Pressure and Vacuum Gauges

Pressure and Vacuum Gauges

Measure pressure and vacuum in air and fluid lines, pumps, and refrigeration systems

Thermocouples

Measure and transmit liquid, gas, and surface temperature

Differential Pressure Transmitters

Differential Pressure Transmitters

Relay pressure changes in heating, cooling, and pumping systems to controllers and remote displays

Differential Pressure Sensors

Differential Pressure Sensors

Attach to gauges and switches to detect static pressure changes in air-handling equipment

Pressure-Regulating Valves

Pressure-Regulating Valves

Reduce inlet pressure to a lower outlet pressure to protect sensitive equipment

Flow Transmitters

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

Flow Switches

Turn equipment on or off when flow rate reaches a set point

Flowmeters

Measure the flow rate of a liquid or gas

Liquid-Level Gauges

Liquid-Level Gauges

Monitor fluid levels in containers

Noncontact Temperature Sensors

Noncontact Temperature Sensors

Monitor the temperature of hazardous, sensitive, and hard-to-reach materials without touching them

Electrical

Sensor Switches

Sensor Switches

Detect moving objects from a distance, triggering a circuit to open or close

Power Transmission

Compressed Air Regulator Manifolds

Compressed Air Regulator Manifolds

Use a single air supply to meet multiple pressure requirements

Compressed Air Regulators

Compressed Air Regulators

Ensure continuous, safe operation of air-powered equipment by controlling air pressure

Material Handling

Compression Tools

Compression Tools

Crimp sleeves around rope and wire rope to create loops for attaching fittings

Safety Equipment

Multi-Gas Detectors

Multi-Gas Detectors

Monitor air for carbon monoxide and combustible gases including methane, hydrogen, and propane

Hydrogen Detectors

Hydrogen Detectors

Alarms and lights alert you to the presence of hydrogen

Propane Detectors

Propane Detectors

Alarms and lights alert you to the presence of propane instantly or after a set exposure time

Methane Detectors

Methane Detectors

Alarms and lights alert you to the presence of methane instantly or after a set exposure time

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)