M4 Reducers | McMaster-Carr

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System of Measurement

Material

Stainless Steel

Hex Length

Threaded Insert Type

Gender

For Use In

Installed Length

0.25" to 0.499"

10 mm to 19.9 mm

20 mm to 24.9 mm

Thread Pitch

Hex Size

Thread Length

Pitch

Thread Type

Length

For Tap Thread Size

RoHS

Compliant with Exemptions

End Type

REACH

Thread Fit

Metric Class 4H

Metric Class 4H6H

Metric Class 6g

Metric Class 6G

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

For Adapting

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Tensile Strength

Less than 20,000 psi

20,000 psi to 39,999 psi

40,000 psi to 49,999 psi

50,000 psi to 99,999 psi

100,000 psi or greater

Finish

Neoprene Coated

Phosphate Coated

Tin Zinc Plated

Zinc Yellow-Chromate Plated

Drill Bit Size

Drive Style

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412 Products

Thread Adapters

Male-Female Thread Adapters

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-Metric Male-Female Hex Thread Adapters

Inch-to-Metric Male-Female Hex Thread Adapters

Change inch threads to metric

Female Thread Adapters

Metric-to-Metric Female Hex Thread Adapters

Metric-to-Metric Female Hex Thread Adapters

Join two male-threaded parts with dissimilar metric 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

Male Thread Adapters

Metric-to-Metric Male Hex Thread Adapters

Metric-to-Metric Male Hex Thread Adapters

Join two female-threaded parts with dissimilar metric thread sizes

Inch-to-Metric Male Hex Thread Adapters

Inch-to-Metric Male Hex Thread Adapters

Join inch and metric female-threaded parts

Other Products

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Rivet Nuts

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

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.)