Metric Reducers | McMaster-Carr

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System of Measurement

Thread Size

Thread Pitch

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Material

Grade 2 Titanium

Stainless Steel

Threaded Insert Type

Fitting Type

Reducing Adapter

Installed Length

0.25" to 0.499"

10 mm to 19.9 mm

20 mm to 24.9 mm

25 mm or greater

For Use In

For Tap Thread Size

Pipe Size

Gender

Length

Shape

Drill Bit Size

End Type

Nut Type

For Tap Type

Export Control Classification Number (ECCN)

Thread Spacing

Thread Insert Style

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Thread Direction

Helical Insert Style

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1,522 Products

Fluid Handling

Pipe Fittings

Form threaded, barbed, flanged, and other types of connections between lengths of pipe

Manifolds

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

Fastening and Joining

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

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

Socket Nuts

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

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