1/2"-13 Adapters | McMaster-Carr

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40,000 psi to 49,999 psi

50,000 psi to 59,999 psi

60,000 psi to 99,999 psi

100,000 psi or greater

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Unified Standard Class 3B

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559 Products

Thread Adapters

Male-Female Thread Adapters

Inch-to-Inch Male-Female Hex Thread Adapters

Change thread size and spacing

75 products

Inch-to-Metric Male-Female Hex Thread Adapters

Change inch threads to metric

56 products

Female Thread Adapters

Inch-to-Inch Female Hex Thread Adapters

Join two male-threaded parts with dissimilar inch thread sizes

53 products

Inch-to-Metric Female Hex Thread Adapters

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

32 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

4 products

Male Thread Adapters

Inch-to-Inch Male Hex Thread Adapters

Join two female-threaded parts with dissimilar inch thread sizes

44 products

Inch-to-Metric Male Hex Thread Adapters

Join inch and metric female-threaded parts

29 products

Left-Hand to Right-Hand Male Thread Adapters

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

7 products

Thread Adapters for Pullers

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

1 product

Other Products

Threaded Inserts

Create new threads or repair stripped threads

137 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

3 products

Shaft Adapters

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

2 products

Weld Nuts

Weld to metal surfaces to add permanent threads

17 products

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

58 products

Studs

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

8 products

Pipe Threader Dies

Install in the die head on your Ridgid pipe threader to cut external pipe and conduit threads

1 product

Leveling Mount Inserts

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

21 products

Flexible Shaft Coupling Hubs

Pair with spiders, discs, or grids for a complete flexible shaft coupling

8 products

Drill Chuck Arbors

Attach drill chucks to machine spindles

3 products