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
Klein Tools 5/16 inch magnetic nut driver with cushion grip handle

Klein Tools

Klein Tools 630-5/16M 5/16" magnetic nutdriver

SKU CH-BMQA-SBRB1 MPN 630-5/16M

A magnetic nut driver with a hollow shaft for long-bolt pass-through and a cushion grip for comfort and torque

  • Product typeNut Drivers
  • Sold asCard
  • Key features* Patent pending hollow shaft design with Rare Ear
  • Rare-earth magnetic tip holds fasteners securely during hard-to-reach work
  • Patent-pending hollow shaft allows unobstructed pass-through on long bolts
  • Internal handle flanges anchor shaft for twist-resistant driving
  • Cushion-grip handle delivers comfort and torque for extended use
  • Color-coded handle with tip indent enables quick size identification

5/16" Magnetic Nut Driver

The Klein Tools 630-5/16M is a hand nut driver built for professionals who need to drive or remove 5/16" hex fasteners. Its magnetic tip holds the fastener in place, making it easier to start bolts in tight or awkward locations. The cushion-grip handle is designed for comfort and torque during extended use. Color-coded markings on the handle and tip allow quick size identification on a busy job site.

Hollow Shaft for Long Bolts

The patent-pending hollow shaft design creates an unobstructed pass-through channel so the tool can seat fully over long bolts or threaded rod without bottoming out. Internal flanges anchor the shaft firmly inside the handle to resist twisting under load. This construction directly addresses the common problem of standard nut drivers running out of clearance on extended studs.

Rare Earth Magnet and Grip Comfort

The rare earth magnetic tip provides strong retention for 5/16" nuts and bolts, reducing drops in hard-to-reach spots. The hollow shaft handles pass-through requirements on long fasteners, while the cushion grip delivers the torque needed for typical installation and maintenance tasks. The tool is not suited for non-magnetic fasteners, oversized hex sizes, or applications requiring insulated handles for live electrical work.

How it compares

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

Price $10.99
Cheaper than about 55% of the 415 comparable items (median $11.99).

Specifications

Product
Brand nameKlein Tools
Model name630-5/16M
Product typeNut Drivers
Size & build
Shipping weight0.07 kg
Package size171 × 27 × 27 mm

Questions about this item

How does the 5/16" magnetic tip help when I'm working on a bolt in a tight spot?

The rare earth magnet holds the fastener so it won't drop while you guide it into a recessed or awkward location.

What does the hollow shaft actually let me do that a solid shaft won't?

It allows the bolt to pass completely through the driver, so you can drive long threaded rods without the shaft bottoming out.

Will the 3" shaft and cushion-grip handle clear the obstacles around my work area?

The 3" hollow shaft reaches into deep cavities, while the cushion grip gives torque and comfort without adding bulk.

More in Screwdrivers, Nut Drivers & Hex Keys

Similar items