Metric Thread Gauges | McMaster-Carr

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1,560 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

Feeler Gauges

Check gaps and alignment between machine parts and other surfaces

Gear Tooth Gauges

Gear Tooth Gauges

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

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

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

Calipers

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

Height Gauges

Measure an object's height and mark workpieces for machining

Drill Bit Size Gauges

Drill Bit Size Gauges

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

Inside Hole Calipers

Inside Hole Calipers

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

Rulers

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

Thickness Gauges

Thickness Gauges

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

Outside Micrometers

Outside Micrometers

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

Micrometer Check Gauges

Micrometer Check Gauges

Confirm the anvil is parallel and measure the amount of wear on your micrometer

Outside Micrometer Tips

Outside Micrometer Tips

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

Depth Micrometers

Depth Micrometers

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

Micrometer Heads

Micrometer Heads

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

Inside Hole Micrometers

Inside Hole Micrometers

Find the inside diameter of cylinders and rings

Tape Measures

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

Variance Indicator Contact Points

Variance Indicator Contact Points

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

Pipe Size Measuring Kits

Pipe Size Measuring Kits

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

Laser Measurers

Laser Measurers

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

Combination Square Blades

Combination Square Blades

Connect to a combination square head to create a combination square

Squares

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

Measuring Wheels

Measuring Wheels

Roll along surfaces to measure distance

Precision Measuring Tool Kits

Precision Measuring Tool Kits

Multiple precision measuring tools in one convenient case

Pipe Size Chart/Rulers

Pipe Size Chart/Rulers

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

Staff Gauges

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

Liquid-Level Tape Measures

Liquid-Level Tape Measures

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

Diameter Tape Measures

Diameter Tape Measures

Wrap around circular items to measure diameter and circumference without calculating

Bore Gauges

Insert into a hole and expand the contacts to measure diameter

Map Distance Measuring Tools

Map Distance Measuring Tools

Slide across maps and blueprints to measure distances

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

Scales

Bench-top, hanging, floor, and conveyor scales

Position Indicators

Position Indicators

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

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

Pressure and Vacuum Transmitters

Pressure and Vacuum Transmitters

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

Differential Pressure Transmitters

Differential Pressure Transmitters

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

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

Safety Equipment

Pedometers

Record steps and miles while you walk and run

Electrical

Sensor Switches

Sensor Switches

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

Material Handling

Robot Tool Calibration Styli

Robot Tool Calibration Styli

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

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