3/8"-16 Reducers | McMaster-Carr

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System of Measurement

Material

Stainless Steel

Thread Type

Pipe Size

Gender

Thread Length

Hex Length

Shape

Hex Size

For Tap Thread Size

Threaded Insert Type

For Adapting

For Use In

Stainless Steel

Nut Type

Length

Thread Fit

Metric Class 6g

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3B

Installed Length

0.25" to 0.499"

10 mm to 19.9 mm

Finish

Neoprene Coated

Phosphate Coated

Tin Zinc Plated

Zinc Yellow-Chromate Plated

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

Thread Spacing

For Use With

Helical Inserts

Screw-Locking Helical Inserts

Export Control Classification Number (ECCN)

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

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677 Products

Thread Adapters

Male-Female Thread Adapters

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

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

Connect float rods to float valves with the through hole

Inch-to-Inch Male-Female Hex Thread Adapters

Inch-to-Inch Male-Female Hex Thread Adapters

Change thread size and spacing

Inch-to-Metric Male-Female Hex Thread Adapters

Inch-to-Metric Male-Female Hex Thread Adapters

Change inch threads to metric

Male Thread Adapters

Inch-to-Inch Male Hex Thread Adapters

Inch-to-Inch Male Hex Thread Adapters

Join two female-threaded parts with dissimilar inch thread sizes

Inch-to-Metric Male Hex Thread Adapters

Inch-to-Metric Male Hex Thread Adapters

Join inch and metric female-threaded parts

Female Thread Adapters

Inch-to-Inch Female Hex Thread Adapters

Inch-to-Inch Female Hex Thread Adapters

Join two male-threaded parts with dissimilar inch thread sizes

Inch-to-Metric Female Hex Thread Adapters

Inch-to-Metric Female Hex Thread Adapters

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

Other Products

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Gear Box Shafts

Gear Box Shafts

Convert output drives from female to male

Threaded Insert Installation Tools

Threaded Insert Installation Tools

Install helical, key-locking, slotted-drive, and other threaded inserts

Gear Box Mounts

Gear Box Mounts

Secure gear boxes that can’t be attached directly to a machine or other surface

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

Flexible Shaft Coupling Hubs

Flexible Shaft Coupling Hubs

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

Studs

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

Screw-Mount Nuts

Screw-Mount Nuts

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

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

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