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Seven Klein Tools nut drivers with cushion grips arranged in a set

Klein Tools

Klein Tools 409-647 7-piece nut driver set

SKU CH-0YBB-3EEKQ MPN 409-647

Seven-piece nut driver set with cushion-grip handles and hollow shanks for SAE fasteners from 3/16 to 1/2 inch

  • Product typeNut Drivers
  • Sold asSet
  • Number of items7
  • Seven SAE sizes cover common fasteners
  • Hollow shanks clear long bolts without binding
  • Six-inch shanks reach recessed hardware easily
  • Cushion grips reduce hand fatigue during extended use
  • Durable Klein Tools construction withstands daily job-site demands

7-Piece SAE Nut Driver Set

This Klein Tools 409-647 set contains seven hollow-shank nut drivers covering SAE sizes from 3/16 in to 1/2 in. Each driver has a 6 in shank for reach and a cushion grip handle. The hollow shank allows bolt clearance during fastening tasks. The set is supplied new and includes no magnetic or insulated features.

Technicians needing common SAE hex fasteners

The set suits mechanics, electricians and maintenance staff who regularly drive 3/16 in through 1/2 in nuts and bolts. The hollow shank helps when a bolt protrudes beyond the nut. Buyers who require metric sizes, insulated shafts for live electrical work, or magnetic tip retention should look at alternative products.

Seven SAE sizes from 3/16 in to 1/2 in

The range of seven fractional-inch sizes determines whether this kit covers the fasteners you encounter. If your hardware uses only these SAE dimensions the set fits; if you need metric or larger SAE sizes it will not. The 6 in shank length and cushion grip are fixed attributes of this model.

How it compares

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

Price $64.99
Pricier than about 90% of the 415 comparable items (median $11.99).

Specifications

Product
Brand nameKlein Tools
Model name647
Product typeNut Drivers
Size & build
Shipping weight4.45 kg
Package size254 × 254 × 127 mm
In the box
Number of items7

Questions about this item

How do the seven SAE sizes from 3/16 in to 1/2 in cover common fastener jobs?

The set includes 3/16 in, 1/4 in, 5/16 in, 11/32 in, 3/8 in, 7/16 in and 1/2 in drivers, matching the most frequent bolt and nut sizes found in electrical and mechanical work.

What does the 6 in hollow shank allow you to reach?

A 6 in shank lets you access recessed or deep-set fasteners that a standard stubby driver cannot reach, while the hollow core clears long bolts or threaded rod.

Will the cushion-grip handles fit in a standard tool pouch or belt slot?

Each driver is about 6 in of shank plus handle, so the overall length fits typical pouches and belt loops designed for standard nut-driver sets.

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