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Silver Robertson screwdriver bit with 1/4 inch shank

Tuff Stuff

Tuff Stuff RS1100 1" Robertson Bit #1 1/4" Shank

SKU CH-PTK0-06Z8M MPN RS1100

A 1-inch Robertson #1 insert bit with a 1/4-inch shank for general-purpose driving tasks

  • Product typeDrill Bits
  • Sold asEach
  • Robertson #1 tip drives square-recess screws cleanly
  • 1" length reaches into tight assemblies
  • Single-ended design keeps the bit stable under load
  • 1/4" shank fits standard drill and driver chucks
  • Built for general-purpose fastening around the shop

Robertson Bit #1 for 1/4" shank drivers

This insert bit fits any drill or driver that accepts a 1/4" hex shank. The 1" length provides standard reach for everyday fastening tasks. It is a single-ended Robertson #1 tip built for general-purpose use.

Users driving Robertson #1 screws in wood.

Suitable for DIYers and tradespeople who need a replaceable tip for #1 recess screws. Not suited for applications requiring a double-ended bit or a different recess size. Buyers needing Phillips, Torx or square-drive tips should look elsewhere.

1/4" hex shank compatibility

The bit only works with chucks or bit holders that accept a 1/4" hex shank. If your tool uses a different shank size or a quick-change mechanism that excludes standard hex, this bit will not fit.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $0.44
Cheaper than about 99% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameTuff Stuff
Model nameRS1100
Product typeDrill Bits

Questions about this item

Will the 1/4" shank fit my drill chuck?

Yes, the 1/4" shank fits any standard drill or screwdriver chuck that accepts a 1/4" hex insert bit.

How do I install the bit and what step do people miss?

Insert the 1/4" shank fully into the chuck or bit holder and tighten securely; the step often missed is confirming the bit seats completely before tightening.

When will this Robertson #1 bit need replacement?

Replace the bit when the tip shows rounding or wear that prevents a clean grip on Robertson #1 screw heads.

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