Adapter Nuts | McMaster-Carr

Filter by

System of Measurement

Thread Size

Material

Length

Gender

Hex Size

Shape

Thread Length

Nut Type

Hex Length

Threading

Threaded on Both Ends

Screw Size

Thread Fit

Unified Standard Class 1B

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

2B999

EAR99

Tensile Strength

Less than 10,000 psi

10,000 psi to 19,999 psi

20,000 psi to 49,999 psi

50,000 psi to 99,999 psi

100,000 psi or greater

Not Rated

Finish

Black Oxide

Glazed

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Mount Type

Specifications Met

Pitch

Drive Style

10,834 Products

Thread Adapters

Female Thread Adapters

Inch-to-Inch Female Hex Thread Adapters

Join two male-threaded parts with dissimilar inch thread sizes

353 products

Metric-to-Metric Female Hex Thread Adapters

Join two male-threaded parts with dissimilar metric thread sizes

164 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

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

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

Connect float rods to float valves with the through hole

14 products

Metric-to-Metric Male-Female Hex Thread Adapters

Increase or decrease metric thread size and change the pitch

238 products

Slotted-Drive Male-Female Round Thread Adapters

Install and remove with a screwdriver

7 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

Connect float balls, float rods, and valves

3 products

Thread Adapters for Pullers

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

8 products

Male Thread Adapters

Inch-to-Inch Male Hex Thread Adapters

Join two female-threaded parts with dissimilar inch thread sizes

290 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-Inch Male Round Thread Adapters

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

1 product

Metric-to-Metric Male Round Thread Adapters

Finger tighten two female-threaded parts with dissimilar metric 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

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

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

Coupling Nuts

Connect and extend threaded rods

620 products

Standoffs

Separate, position, or connect components in assemblies

5,257 products

Threaded Inserts

Create new threads or repair stripped threads

350 products

Hex Nuts

Handle most general fastening needs

33 products

Weld Nuts

Weld to metal surfaces to add permanent threads

589 products

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

28 products

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

166 products

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

113 products

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

21 products

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

10 products

Rod End Nuts

Attach to rods, pipe, and tubing to make pivot and hinge points

8 products

Shaft Adapters

Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends

8 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

7 products

Flange Nuts

The flange distributes pressure, so you don't need a washer

4 products

Retaining Nuts for Backup Pads

Thread onto your tool’s arbor to hold a sanding disc against the backup pad

3 products