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Two silver S2 steel square drive bits with 1/4 inch hex shanks

Senco

Senco EA0301 No 2 Square Bit 1/4" Shank 2-Pack

SKU CH-GA74-FCSGZ

Two S2 steel square-drive bits with 1/4" hex shanks for Robertson #2 fasteners

  • #2 Robertson tip drives square-recess screws cleanly
  • 1/4" hex shank fits standard drill chucks and bit holders
  • S2 steel construction resists wear on repetitive fastening tasks
  • 7 1/2" overall length reaches deep or recessed fasteners
  • Two-piece pack keeps a spare bit ready on the job

Senco EA0301 No 2 Square Bit 1/4" Shank 2-Pack

This two-piece set supplies #2 Robertson square-recess bits with a 1/4" hex shank for use in standard drill chucks and quick-change holders. The bits are made from S2 steel and measure 7 1/2 in overall length. They are designed for driving square-socket screws in wood, metal and composite assemblies.

Sustained driving performance

Because the bits are not impact rated, they are intended for rotary drilling and driving rather than high-torque impact tools. Under continuous rotary load the S2 steel resists rounding and cam-out, letting the operator maintain consistent drive depth across many fasteners. Impact drivers will exceed the design limits and may cause premature tip failure.

Replaces worn or lost #2 square bits

The pack directly replaces individual #2 Robertson bits that have stripped or gone missing, restoring full engagement with square-recess screws. It is not suited for Phillips, Torx or hex sockets, nor for applications that require impact-rated bits. Buyers needing impact-rated square bits or different tip sizes should select a different product.

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 nameSENCO

Questions about this item

Will the 1/4" hex shank on these Senco EA0301 bits fit the chuck of my older cordless drill?

Yes, the 1/4" hex shank is a standard size that fits the keyless chuck found on most cordless drills and impact drivers made in the last two decades.

Do I need a specific Senco driver like the DS332-AC or DS312-18V to use these Robertson #2 bits?

No, they work with any tool that accepts a 1/4" hex shank; the Senco model numbers are simply the manufacturer's own drivers that also take this bit.

Since these are not impact-rated, will they hold up if I use them in my older impact driver for deck screws?

They are made of S2 steel but lack an impact rating, so repeated high-torque impacts can shatter the tip; reserve them for drill mode or a standard driver.

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