Metric Thread Gauges | McMaster-Carr

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System of Measurement

Thread Type

Metric Trapezoidal

For Use With

Grease Fittings

Thread Size

Thread Location

Material

Stainless Steel

Tungsten Carbide

Pipe Size

Connection Location

Thread Pitch

Manufacturer

Length

Screw Size

Gender

Number of Identifiers

Display Type

Maximum Pressure, psi

Container Type

Width

Thickness

Measurement Unit

Inches of Mercury

Inches of Water

Height

24 1/4" to 38 3/16"

Dial Type

REACH

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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2,252 Products

Measuring and Inspecting

Thread Size Identifiers

Thread Size Identifiers

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

Plug Gauges

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

Ring Gauges

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

Flatness Gauges

Flatness Gauges

Determine if the flatness of surface plates, lapping plates, and other surfaces is within tolerance

Variance Indicators

Variance Indicators

Identify small dimensional differences when checking part quality and alignment

Variance Indicator Caps

Variance Indicator Caps

Cover and color-code the spindle on your variance indicator

Variance Indicator Lifting Levers

Variance Indicator Lifting Levers

Replace the cap on your variance indicator to help lift the spindle

Variance Indicator Clamps

Variance Indicator Clamps

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

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

Calipers

Take inside, outside, and depth measurements with more precision than a ruler

Gear Tooth Gauges

Gear Tooth Gauges

Identify your gear's pressure angle, pitch, and module

Height Gauges

Measure an object's height and mark workpieces for machining

Height Gauge Calibrators

Height Gauge Calibrators

Ensure height gauges are accurate

Drill Bit Size Gauges

Drill Bit Size Gauges

Match your drill bit to one of the holes to confirm its size

Depth Gauges

Reach into slots, counterbores, and other holes to measure depth

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

Diameter Identifiers

Diameter Identifiers

Tighten the strap around rods, drill bits, and other small items to measure outer diameter

Radius Gauges

Check convex and concave radii of tools, patterns, and dies

Inside Hole Calipers

Inside Hole Calipers

Measure hard-to-reach areas, such as internal grooves and slots

Thickness Gauges

Thickness Gauges

Move the thumb lever to quickly check the thickness of flat stock, pipe, or tubing

Depth Micrometers

Depth Micrometers

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

Outside Micrometers

Outside Micrometers

Apply even pressure to objects to measure thickness more precisely than thickness gauges

Outside Micrometer Tips

Outside Micrometer Tips

Adapt your micrometer to measure curved and irregularly shaped objects, such as gear teeth and pipe

Rulers

Horizontal, vertical, circumference, center-finding, and pica rulers

Inside Hole Micrometers

Inside Hole Micrometers

Find the inside diameter of cylinders and rings

Tape Measures

Standard, long, center-finding, and flexible tape measures

Micrometer Heads

Micrometer Heads

Mount on jigs, fixtures, and machine tools to position equipment and measure length

Pipe Size Chart/Rulers

Pipe Size Chart/Rulers

Curl around pipe to gauge its size, measure its diameter, or mark lines

Calibration Rods

Calibration Rods

Check and set micrometers and other measuring tools

Measuring Wheels

Measuring Wheels

Roll along surfaces to measure distance

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

Variance Indicator Contact Points

Variance Indicator Contact Points

Attach to your variance indicator to make contact with the workpiece being measured

Map Distance Measuring Tools

Map Distance Measuring Tools

Slide across maps and blueprints to measure distances

Threaded Hole Location Gauges

Threaded Hole Location Gauges

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

Laser Measurers

Laser Measurers

Point the laser to determine the distance to objects up to 700 yards away

Pipe Size Measuring Kits

Pipe Size Measuring Kits

Connect to pipe and fittings to determine their size without additional measuring tools

Micrometer Check Gauges

Micrometer Check Gauges

Confirm your outside or depth micrometers are accurate

Squares

Check 90° angles during layout work with combination, angle, or pipefitters' squares

Step Gauges

Check step height, gap width, and distance between slots to make sure machine and engine parts align

Chamfer Gauges

Check the diameter of chamfered edges to make sure they're within tolerance

Combination Square Blades

Combination Square Blades

Connect to a combination square head to create a combination square

Squareness Gauges

Squareness Gauges

Check frames and machined parts to see if they are leaning or uneven

Liquid-Level Tape Measures

Liquid-Level Tape Measures

Lower into deep containers, such as tanks, to check the level of oil and other fluids

Staff Gauges

Typically mounted to walls and tanks for measuring the level of liquids, such as water, fuel, and oil

Precision Measuring Tool Sets

Precision Measuring Tool Sets

Multiple precision measuring tools in one convenient case

Transfer Punches

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

Parallel Rules

Draw parallel lines, as well as circles, arcs, and angles

Load Cells

Measure forces and send them to computers to monitor and trigger actions in machinery

Hardness Tester Indenters

Hardness Tester Indenters

Hard enough to make impressions on most metal to determine Brinell hardness

Position Indicators

Position Indicators

Track components on rotating spindles or lead screws to help adjust machinery quickly and precisely

Scales

Bench-top, hanging, floor, and conveyor scales

Fluid Handling

Pressure Gauges

Pressure Gauges

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

Pressure and Vacuum Gauges

Pressure and Vacuum Gauges

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

Differential Pressure Transmitters

Differential Pressure Transmitters

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

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

Sights

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

Flowmeters

Measure the flow rate of a liquid or gas

RTDs

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

Noncontact Temperature Sensors

Noncontact Temperature Sensors

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

Material Handling

Robot Tool Calibration Styli

Robot Tool Calibration Styli

Calibrate robot arm movement for precision in tasks such as attaching fasteners

Safety Equipment

Pedometers

Record steps and miles while you walk and run

Fastening and Joining

Rivet Nut Tools

Rivet Nut Tools

Install rivet nuts

Electrical

Sensor Switches

Sensor Switches

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

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