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Yellow and red insulated nutdriver with 5.0 inch solid round shank

Wiha Tools

Wiha Tools 32278 Insulated Nutdriver 9/16 in 5.0 in Shank

SKU CH-2ZAQ-QQDNN MPN 32278

Insulated nutdriver fits 9/16 in fasteners with a 5.0 in shank for electrical safety

  • Product typeNut Drivers
  • Color and finishYellow and Red
  • Insulated handle protects against electric shock
  • 9/16 in tip fits matching SAE fasteners
  • 0 in shank reaches recessed bolts
  • Yellow and red finish aids quick identification
  • Non-magnetic tip avoids unwanted metal contact

Insulated Nut Driver 9/16 in

The Wiha Tools 32278 is an insulated nut driver sized for 9/16 inch fasteners and rated for live electrical work. It is built for electricians and maintenance technicians who need verified protection on energised panels. The solid round shank extends 5.0 inches to reach recessed hardware in tight enclosures. This tool is not for buyers who require a magnetised tip to hold fasteners during placement.

Thermals noise and power draw

As a hand tool the nut driver produces no operational heat and draws no electrical power. It operates silently because there are no moving parts or motors involved. The insulated coating does not degrade under normal ambient temperatures encountered in electrical cabinets. There are no thermal or acoustic limits that would restrict continuous daily use.

Build quality and day to day use

The yellow and red moulded handle provides a clear visual indication of the insulation rating and resists common workshop chemicals. A 5/16 inch bolt clearance allows the shank to slide over longer thread lengths without binding. The non-magnetic tip avoids attracting metal swarf that could bridge live terminals. This driver is not for users who need ESD-safe materials for sensitive electronics assembly.

How it compares

Measured against everything we stock in Screwdrivers, Nut Drivers & Hex Keys, at today’s prices. Recalculated every night.

Price $13.99
Pricier than about 57% of the 415 comparable items (median $11.99).

Specifications

Product
Brand nameWiha Tools
Model name32278
Product typeNut Drivers
Color and finishYellow and Red

Questions about this item

How do I install the 5.0 in shank nutdriver on a 9/16 in fastener?

Select the 9/16 in nutdriver, align the hollow tip over the fastener head, and press straight on; the solid round shank transmits torque without a magnetic hold.

What maintenance or replacement will the insulated nutdriver need later?

Inspect the yellow and red insulation before each use; replace the tool if the coating shows cuts, cracks, or wear that exposes the metal shank.

What limit appears first when using the 32278 nutdriver continuously?

The 5/16 in bolt clearance restricts access to fasteners with longer threads, so deep-stud applications become the practical limit first.

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