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Wiha 3/8 drive 7/8 inch 12-point chrome alloy steel socket

Wiha Tools

Wiha Tools 31439 3/8 in Drive Socket 7/8 in Hex SAE 12-Point Alloy Steel

SKU CH-YAAT-3FZ2C

A 12-point alloy-steel socket with a 3/8 in drive for 7/8 in hex fasteners, meeting ASTM F1505, CSA, EN/IEC 60900, NFPA 70E and VDE standards

  • 12-point hex profile grips fastener flats securely
  • Alloy steel construction resists wear during repeated use
  • 3/8-inch drive fits standard ratchet handles
  • Meets ASTM F1505 and CSA safety standards
  • VDE and EN/IEC 60900 certified for electrical work

Professional Electrician Socket

The Wiha Tools 31439 is a 3/8 inch drive socket sized at 7/8 inch with a 12-point hex profile. It is manufactured from alloy steel with a chrome finish for professional electrician use. The hand tool meets ASTM F1505, CSA, EN/IEC 60900, NFPA70E and VDE standards. It is rated for standard applications and not impact rated.

Upgrade From Basic Sockets

This socket replaces standard chrome sockets that lack insulated tool certifications. The jump is worth it when working on or near live electrical systems up to the rated voltage. The VDE and IEC 60900 compliance provides verified insulation protection. It also satisfies NFPA 70E requirements for workplace electrical safety.

Build Integration Needs

The 3/8 inch drive fits compatible ratchets, extensions and torque wrenches already in the kit. The 12-point hex geometry engages fasteners from multiple angles in tight panels. Alloy steel construction resists rounding on SAE hardware. California Proposition 65 warnings apply for chemical exposure during handling.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 89% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameWIHA TOOLS

Questions about this item

Will the 3/8 in drive fit my existing ratchet?

Yes, the 3/8 in drive square matches standard ratchets and extensions of the same size.

How do I install the socket onto the fastener correctly?

Align the 12-point opening with the 7/8 in hex fastener and press firmly until the drive square engages the ratchet.

When should I replace this alloy steel socket?

Replace it if the 12-point profile shows rounding, cracks, or if the chrome finish flakes off exposing bare metal.

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