Thread Converters | McMaster-Carr

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Compliant with Exemptions

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Threading

Threaded on Both Ends

38,275 Products

Thread Adapters

Male-Female Thread Adapters

Inch-to-Inch Male-Female Hex Thread Adapters

Change thread size and spacing

473 products

Inch-to-Metric Male-Female Hex Thread Adapters

Change inch threads to metric

770 products

Metric-to-Metric Male-Female Hex Thread Adapters

Increase or decrease metric thread size and change the pitch

238 products

Male-Female Round Universal Thread Adapters with Through Hole

Air, liquids, wire, and other thin materials flow through the hole

3 products

Inch-to-NPT Male-Female Hex Thread Adapters with Through Hole

Connect float rods to float valves with the through hole

14 products

Slotted-Drive Male-Female Round Thread Adapters

Install and remove with a screwdriver

7 products

Inch-to-NPT Male-Female Hex Thread Adapters

Connect float balls, float rods, and valves

3 products

Male Thread Adapters

Inch-to-Metric Male Hex Thread Adapters

Join inch and metric female-threaded parts

482 products

Inch-to-Inch Male Hex Thread Adapters

Join two female-threaded parts with dissimilar inch thread sizes

290 products

Inch-to-Inch Male Round Thread Adapters

Finger tighten two female-threaded parts with dissimilar inch thread sizes

1 product

Metric-to-Metric Male Hex Thread Adapters

Join two female-threaded parts with dissimilar metric thread sizes

129 products

Metric-to-Metric Male Round Thread Adapters

Finger tighten two female-threaded parts with dissimilar metric thread sizes

1 product

Inch-to-Metric Male Round Thread Adapters

Finger tighten two female-threaded parts with inch and metric thread sizes

4 products

Male Round Universal Thread Adapters with Through Hole

Air, liquids, wire, and other thin materials flow through the hole

4 products

Left-Hand to Right-Hand Male Thread Adapters

Fasten parts with right-hand threads to parts with left-hand threads

32 products

Female Thread Adapters

Inch-to-Inch Female Hex Thread Adapters

Join two male-threaded parts with dissimilar inch thread sizes

353 products

Inch-to-Metric Female Hex Thread Adapters

Join two male-threaded parts with inch and metric thread sizes

532 products

Left-Hand to Right-Hand Female Hex Thread Adapters

Join two male-threaded parts with dissimilar metric thread sizes
Fasten parts with right-hand threads to parts with left-hand threads

66 products

Metric-to-Metric Female Hex Thread Adapters

Join two male-threaded parts with dissimilar metric thread sizes

164 products

Thread Adapters for Drum Openings

Convert drum openings with metric or BSPP threads to a 2 NPT pipe size

10 products

Hex Drive Thread Adapters

Join coarse threads to fine threads using a hex key

27 products

Thread Adapters for Pullers

Pair with an external grip puller to pull shafts, bearing caps, and pinions

8 products

Other Products

Threaded Inserts

Create new threads or repair stripped threads

844 products

Drum Plug Adapters

Screw into plastic drum openings to replace threads that can become damaged with frequent use

1 product

Pipe Fittings

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

8,401 products

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

5,257 products

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

11,055 products

Hose Fittings

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

5,561 products

Conduit and Cord Grip Thread Adapters

Connect to fittings and openings that have a different thread type

44 products

Studs

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

82 products

Pipe Nipples and Pipe

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

483 products

Faucet Spout Thread Adapters

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

4 products

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

2 products

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

1 product

Syringe Thread Adapters

Change connections on syringes, dispensing tips, and needles to luer lock or threaded connections

3 products

Thermocouple and RTD Mounts

Join thermocouple connectors and probes that have different connection types

18 products

Pipe Flanges

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

952 products

Pipe Plugs

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

81 products

Air Chucks

Connect air hose to Schrader valves, which are common on tires and hydraulic systems

28 products

Wood Screws

Fasten material to wood or pieces of wood to each other

13 products

Thermocouple Connector Adapters

Convert round-pin male connectors to flat-pin male connectors

10 products

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

5 products

Drum Plugs

Seal drum lid openings

4 products

Valve Stems

Snap into tubeless tire rims to create an air inlet

4 products

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

1 product