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3/8" Hex Bit Socket Metric 3mm — M3815 series specs & sizes

A 3/8 inch drive socket with an integrated metric hex bit. Made from chrome vanadium and S2 steel. Sizes, lengths and weights in American units.

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Written by David Crosbie

A 3/8 inch drive socket with an integrated metric hex bit. Made from chrome vanadium and S2 steel.

CrV STEEL · S2 STEEL · 25°

Features

  • 3/8-inch drive socket with a 3mm hex bit for metric fasteners.

  • Delivers accurate torque in professional automotive, electrical, and mechanical applications.

  • Ball retention groove ensures a secure attachment to the drive tool.

  • Overall length of 23mm is ideal for work in tight assemblies.

  • Compatible with Teng Tools socket sets TED3836, TTESK85, TTBS35, M3812, and TEDBS47.

  • Manufactured according to DIN 7422, this ensures the socket meets rigorous professional criteria

  • S2 steel bits pressed into a chrome vanadium socket with a matte finish provide long-lasting durability under high torque

  • The ballpoint tip allows for use at angles up to 25°, which is convenient when space is limited

  • A ball retention groove in the socket ensures a secure grip on the square drive

  • Comes with a metal socket clip for easy storage and quick access when stored on a socket rail

Sizes & specifications

Part no.

Size

Length

Weight

Docs

Availability

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

1.7 oz (48 g)

In store

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

1.7 oz (48 g)

In store

—

0.91" (23 mm)

—

In store

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

1.7 oz (49 g)

In store

—

3.9" (100 mm)

1.7 oz (49 g)

In store

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

1.7 oz (49 g)

In store

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

2.2 oz (61 g)

In store

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

2.8 oz (78 g)

In store

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

2.9 oz (81 g)

In store

—

0.91" (23 mm)

—

In store

—

3.9" (100 mm)

4.3 oz (123 g)

In store

Dimensions shown in inches with millimeters in parentheses — figures come straight from the official Teng Tools product data. Docs links open the official Teng Tools PDF data sheet, user manual or parts diagram for that part number.

Availability & help

Items marked “In store” are stocked at tengtoolsusa.com and ship from our Fort Worth, Texas warehouse. For anything marked “Ask us”, contact us — we can usually get it. Every Teng Tools hand tool carries our lifetime warranty against manufacturing defects.

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