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Yellow cushion-grip nut driver with 3-inch hollow chrome shank and 5/16-inch hex tip

Klein Tools

Klein Tools 630516 5/16" 3" Nut Driver

SKU CH-Z1VH-83QDD MPN 630516

A 5/16 inch hex nut driver with a 3 inch hollow shank for long bolts and a cushion-grip handle for torque and comfort

  • Handle constructionChrome Plated
  • Product typeNut Drivers
  • Color and finishYellow
  • Key featuresCushion Grip Corrosion Resistant Twist Resistant
  • Hollow 3" shank clears long bolts and studs
  • Cushion-grip handle delivers extra torque and comfort
  • Chrome-plated steel resists corrosion for lasting use
  • Yellow colour-coded end speeds size identification
  • Patented Tip-Ident marks orientation and driver type

5/16" Hex Nut Driver for Long Bolts

The Klein Tools 630516 is a 5/16 inch hex nut driver designed to fit over long bolts and studs. Its 3 inch hollow chrome plated shank reaches recessed fasteners on stacked circuit boards or deep assemblies. The cushion grip handle provides comfort and allows greater torque during extended use. Yellow colour coding on the handle end enables quick size identification in a busy tool bag.

Simple Hand Tool Installation

No installation is required beyond selecting the correct 5/16 inch hex size for the fastener. The hollow shank slides over protruding threads, but the fixed 3 inch shank length limits reach in very deep cavities. The patented Tip-Ident marking prevents confusion with other driver sizes during fast-paced work. Users must ensure the hex tip fully engages the nut flats to avoid rounding corners under high torque.

Manual Torque and Reach Limits

Torque capacity depends entirely on the operator's hand strength and the cushion grip's friction. The 3 inch shank length restricts access to fasteners deeper than that dimension unless an extension is used. The hollow shaft design accommodates long studs but offers no mechanical advantage beyond direct manual leverage. Chrome plating resists corrosion but does not increase the structural strength of the steel shank.

How it compares

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

Price $5.99
Cheaper than about 85% of the 415 comparable items (median $11.99).

Specifications

Product
Brand nameKLEIN TOOLS
Product typeNut Drivers
Color and finishYellow
Size & build
Handle constructionChrome Plated
Shipping weight0.45 kg
Package size25 × 25 × 25 mm

Questions about this item

How do I confirm the nut driver is seated correctly on a fastener?

The patented Tip-Ident marking on the handle shows the hex orientation and 5/16" size so you can verify alignment before applying torque.

What comes with the 630516 and is anything else needed to start using it?

The package contains the nut driver with its 3" hollow chrome-plated shank and cushion-grip handle; no additional parts are required for normal use.

When should I choose the 5/16" yellow-coded version over other sizes?

Select this model when the fastener measures 5/16" across flats; the yellow handle end provides instant visual identification in a mixed set.

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