Thread Adapters | McMaster-Carr

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26,460 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

Slotted-Drive Male-Female Round Thread Adapters

Install and remove with a screwdriver

7 products

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

Connect float rods to float valves with the through hole

14 products

Inch-to-NPT Male-Female Hex Thread Adapters

Connect float balls, float rods, and valves

3 products

Male Thread Adapters

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

Inch-to-Metric Male Hex Thread Adapters

Join inch and metric female-threaded parts

482 products

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

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

Inch-to-Metric Male Round Thread Adapters

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

4 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

Metric-to-Metric Female Hex Thread Adapters

Join two male-threaded parts with dissimilar metric thread sizes

164 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

Thread Adapters for Pullers

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

8 products

Hex Drive Thread Adapters

Join coarse threads to fine threads using a hex key

27 products

Thread Adapters for Drum Openings

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

10 products

Other Products

Pipe and Pipe Fittings

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

15,389 products

Hose Fittings

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

5,573 products

Conduit Straights

Join conduit of different sizes and types, or attach conduit to a knockout in electrical boxes

42 products

Threaded Inserts

Create new threads or repair stripped threads

1,003 products

Drum Plug Adapters

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

1 product

Probe Stylus Accessories

Add components that extend length, adapt threads, or hold multiple styli at once

1 product

Grease Fitting Adapters

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

2 products

Weld Nuts

Weld to metal surfaces to add permanent threads

133 products

Tube and Tube Fittings

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

123 products

Faucet Spout Thread Adapters

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

4 products

Syringe Thread Adapters

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

3 products

Variance Indicator Contact Point Adapters

Convert variance indicators to work with inch-size contact points or measure hard-to-reach spots

2 products

Air Chucks

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

8 products

Hose Coupling Size-Identification Kits

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

1 product

On-Off Valves

Start and stop flow through a line

1 product

Diverting Valves

Redirect flow between ports

15 products

Sampling Valves

Drain a small amount of fluid for inspection without disrupting flow

5 products

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

88 products

Thermocouple and RTD Mounts

Join thermocouple connectors and probes that have different connection types

18 products

Thermocouple Connector Adapters

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

10 products

Gear and Bearing Puller Step-Plate Adapters

Provide a surface for forcing screws on pullers to push against

11 products

Gear and Bearing Puller Shaft Protectors

Prevent forcing screws on pullers from causing damage

5 products

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

1 product

Hose Clamps

Connect hose to barbed hose fittings

2 products