Bolt Reducers | McMaster-Carr

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Stainless Steel

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Metric Class 6g

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

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DFARS Specialty Metals

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Finish

Zinc Yellow-Chromate Plated

Pipe Size

OD

Thread Spacing

Shaft Diameter

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3,541 Products

Thread Adapters

Male Thread Adapters

Inch-to-Inch Male Round Thread Adapters

Inch-to-Inch Male Round Thread Adapters

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

Inch-to-Inch Male Hex Thread Adapters

Inch-to-Inch Male Hex Thread Adapters

Join two female-threaded parts with dissimilar inch thread sizes

Metric-to-Metric Male Round Thread Adapters

Metric-to-Metric Male Round Thread Adapters

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

Metric-to-Metric Male Hex Thread Adapters

Metric-to-Metric Male Hex Thread Adapters

Join two female-threaded parts with dissimilar metric thread sizes

Left-Hand to Right-Hand Male Thread Adapters

Left-Hand to Right-Hand Male Thread Adapters

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

Inch-to-Metric Male Round Thread Adapters

Inch-to-Metric Male Round Thread Adapters

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

Inch-to-Metric Male Hex Thread Adapters

Inch-to-Metric Male Hex Thread Adapters

Join inch and metric female-threaded parts

Male Round Universal Thread Adapters with Through Hole

Male Round Universal Thread Adapters with Through Hole

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

Male-Female Thread Adapters

Inch-to-Inch Male-Female Hex Thread Adapters

Inch-to-Inch Male-Female Hex Thread Adapters

Change thread size and spacing

Metric-to-Metric Male-Female Hex Thread Adapters

Metric-to-Metric Male-Female Hex Thread Adapters

Increase or decrease metric thread size and change the pitch

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

Male-Female Round Universal Thread Adapters with Through Hole

Male-Female Round Universal Thread Adapters with Through Hole

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

Inch-to-Metric Male-Female Hex Thread Adapters

Inch-to-Metric Male-Female Hex Thread Adapters

Change inch threads to metric

Slotted-Drive Male-Female Round Thread Adapters

Slotted-Drive Male-Female Round Thread Adapters

Install and remove with a screwdriver

Inch-to-NPT Male-Female Hex Thread Adapters

Inch-to-NPT Male-Female Hex Thread Adapters

Connect float balls, float rods, and valves

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

Metric-to-Metric Female Hex Thread Adapters

Metric-to-Metric Female Hex Thread Adapters

Join two male-threaded parts with dissimilar metric thread sizes

Hex Drive Thread Adapters

Hex Drive Thread Adapters

Hex Drive Thread Adapters

Join coarse threads to fine threads using a hex key

Other Products

Standoffs

Separate, position, or connect components in assemblies

Shaft Adapters

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

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