Thread Reducers | McMaster-Carr

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System of Measurement

Thread Size

Material

Stainless Steel

Fitting Type

Reducing Adapter

Pipe Size

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Gender

Shape

Threaded Insert Type

Fitting Connection

Spec Image

Clamp-On Barbed

Spec Image

Quick Disconnect

Spec Image

For Use With

Acetic Acid (White Vinegar)

Acetic Acid (White Vinegar) (5% Concentration)

Acetic Acid (White Vinegar) (10% Concentration)

Calcium Chloride

Length

Pipe Material

Stainless Steel

Pipe Schedule

For Tap Thread Size

Connects To

For Use In

Installed Length

Less than 0.25"

0.25" to 0.499"

10 mm to 19.9 mm

20 mm to 24.9 mm

25 mm or greater

DFARS Specialty Metals

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

Thread Length

Flange Material

Stainless Steel

Thread Pitch

REACH

How can we improve?

13,337 Products

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

Studs

Press, weld, or screw in place to add a threaded fastening point

Fluid Handling

Pipe Fittings

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

Pipe Nipples and Pipe

Pipe Nipples and Pipe

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

Pipe Flanges

Create an access point in a line by bolting two same-size flanges together with a gasket

Pipe Plugs

Insert into the ends of pipe to keep out dirt and debris

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Manifolds

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

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Diverting Valves

Diverting Valves

Redirect flow between ports

Facility and Grounds Maintenance

Faucet Spout Thread Adapters

Faucet Spout Thread Adapters

Connect the female end of your garden hose to a faucet spout

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