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Wiha 3/8 inch drive hex socket bit, alloy steel finish

Wiha Tools

Wiha Tools 31813 3/8 in Drive Socket Bit

SKU CH-BR7E-TTYFM

3/8 inch drive hex socket bit with 1 11/32 inch insert length and 6-point SAE profile

  • 3/8 in drive fits standard ratchets
  • 3/8 in hex tip engages hex fasteners
  • 6-point socket geometry reduces rounding
  • Alloy steel construction resists wear
  • 3 7/64 in overall length reaches confined spaces

3/8 in Drive Hex Socket Bit

The Wiha Tools 31813 is a 3/8 inch drive socket bit designed for hex fasteners. It features a standard socket depth and a 6-point configuration for secure engagement. The tip size measures 3/8 inch with a hex style. This tool is intended for professional mechanics and serious DIY users who require reliable socket bits.

Alloy Steel Construction Benefits

The bit is manufactured from alloy steel for durability and strength. It has an overall length of 3 7/64 inches and an insert length of 1 11/32 inches. The insert is not replaceable, meaning the entire bit is replaced when worn. This design suits users who prefer a solid one-piece tool over interchangeable systems.

Automotive and Garage Use Cases

This socket bit suits automotive technicians and garage workshops working with SAE hex fasteners. The 3/8 inch drive size fits common ratchets and torque wrenches. Buyers needing metric sizes or replaceable insert systems should look at alternative tool configurations. The product carries a California Proposition 65 warning for chemical exposure.

Highlights

  • 3/8 in drive fits standard ratchets
  • 3/8 in hex tip engages hex fasteners
  • 6-point socket geometry reduces rounding
  • Alloy steel construction resists wear
  • 3 7/64 in overall length reaches confined spaces

Specifications

BrandWIHA

Questions about this item

What drive size does the 31813 socket bit require?

The socket bit uses a 3/8 in drive size for standard ratchet compatibility.

How is the hex insert secured in the 31813 socket bit?

The hex insert is not replaceable; the bit is a single alloy steel piece.

Does the 31813 socket bit need any lubrication or insert changes over time?

No insert changes are needed; occasional cleaning preserves the alloy steel finish.

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