We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Chrome 12-point 20 mm socket 3/8 in drive

Wiha Tools

Wiha Tools 31520 3/8 in Drive 20mm Hex Metric Socket tool storage

SKU CH-4AH4-28342

20 mm insulated 12-point socket with 3/8 in drive meets ASTM F1505, CSA, EN/IEC 60900, NFPA 70E and VDE standards

  • 12-point socket profile grips fastener flats securely
  • 20 mm metric size fits standard hardware applications
  • Insulated to EN/IEC 60900 for live-line protection
  • Alloy steel construction with chrome finish resists corrosion
  • VDE and ASTM F1505 certified for professional use

3/8 in Drive 20 mm Hex Socket

This insulated socket fits a 3/8 in drive and engages 20 mm metric fasteners with a 12-point profile. It is built from alloy steel with a chrome finish for hand-operated use. The tool meets ASTM F1505, CSA, EN/IEC 60900 and NFPA 70E standards and carries VDE certification. It is not impact rated.

Compatibility check before ordering

Verify that your ratchet or handle accepts a 3/8 in square drive. Confirm the fastener you are turning is a 20 mm metric hex head. Ensure the application does not require an impact-rated socket, as this model is designed for hand use only. Check that your work environment demands the listed insulation standards.

Upgrade from non-insulated or worn sockets

This socket replaces standard chrome sockets when electrical insulation to EN/IEC 60900 and VDE is required. It also replaces rounded or damaged 20 mm sockets that no longer grip securely. The jump is worth it for professionals working on live or potentially live equipment up to the rated voltage. It is not for users who need impact-rated drive tools.

Highlights

  • 12-point socket profile grips fastener flats securely
  • 20 mm metric size fits standard hardware applications
  • Insulated to EN/IEC 60900 for live-line protection
  • Alloy steel construction with chrome finish resists corrosion
  • VDE and ASTM F1505 certified for professional use

Specifications

BrandWIHA

Questions about this item

Does the Wiha 31520 socket ship alone or in a set with other pieces?

The listing describes a single 3/8 in drive, 20 mm, 12-point metric socket; no additional sockets, rails or cases are mentioned.

When should I choose the 20 mm size over another metric size?

Select the 20 mm socket only when the fastener you are turning measures 20 mm across the flats; each size fits one specific bolt or nut.

What does the VDE and ASTM F1505 marking mean for daily workshop use?

It certifies the socket is insulated for live electrical work up to 1 000 V AC and meets ASTM F1505, CSA, EN/IEC 60900 and NFPA 70E safety standards.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.