Metric Reducers | McMaster-Carr

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System of Measurement

Thread Size

Thread Pitch

Material

Grade 2 Titanium

Stainless Steel

Threaded Insert Type

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Fitting Type

Reducing Adapter

For Use In

Installed Length

0.25" to 0.499"

10 mm to 19.9 mm

20 mm to 24.9 mm

25 mm or greater

For Tap Thread Size

Pipe Size

End Type

Gender

For Tap Type

Drill Bit Size

Length

Shape

Nut Type

Thread Spacing

Thread Insert Style

For Material Thickness

0.000 mm to 5.000 mm

0.400 mm to 2.800 mm

0.400 mm to 4.000 mm

0.400 mm to 4.900 mm

0.400 mm to 11.100 mm

0.500 mm to 1.500 mm

0.500 mm to 2.000 mm

0.500 mm to 2.500 mm

0.500 mm to 3.000 mm

0.500 mm to 3.300 mm

0.500 mm to 4.500 mm

0.500 mm to 7.100 mm

0.700 mm to 3.000 mm

0.700 mm to 3.300 mm

0.700 mm to 3.800 mm

0.700 mm to 4.200 mm

0.800 mm to 4.000 mm

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Helical Insert Type

RoHS

Compliant with Exemptions

REACH

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1,535 Products

Fluid Handling

Pipe and Fittings

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

Pressure-Regulating Valves

Pressure-Regulating Valves

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

Fastening and Joining

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Power Transmission

Compressed Air Filter/Regulators

Compressed Air Filter/Regulators

Simultaneously clean air that's running through a system and control its pressure

Compressed Air Filter/Regulator/Lubricators

Compressed Air Filter/Regulator/Lubricators

Deliver clean, lubricated air at the desired pressure to a component in your line

Compressed Air Regulators

Compressed Air Regulators

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

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