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Tuff Stuff SP8100 spanner insert bit #8, 1 inch length, 1/4 inch shank, single-ended, metal finish

Tuff Stuff

Tuff Stuff SP8100 pneumatic accessory 1" spanner bit #8 1/4" shank

SKU CH-2RR0-726D6 MPN SP8100

A 1" single-ended spanner bit with a 1/4" shank for driving #8 spanner screws in drills and screwdrivers

  • Product typeDrill Bits
  • Sold asEach
  • Spanner #8 tip fits matching fasteners securely
  • 1" length reaches recessed screw heads easily
  • Single-ended design simplifies bit changes quickly
  • 1/4" shank works with standard drill chucks
  • Durable construction withstands repeated tightening tasks

Spanner Bit #8, 1/4" shank

The Tuff Stuff SP8100 is a single-ended spanner insert bit with a 1/4" shank and a #8 tip. It measures one inch in overall length and fits any drill or driver that accepts a 1/4" hex shank. The bit is supplied new and sold individually for general-purpose fastening tasks.

Suits standard 1/4" hex drivers.

This bit suits users who drive #8 spanner-head screws with a standard 1/4" hex chuck or adapter. It will not fit tools that require a different shank diameter, a double-ended design, or a different tip profile such as Phillips, Torx or hex. Buyers needing those configurations should look at other accessories.

#8 tip size decides fit

The critical specification is the #8 spanner tip, which must match the screw head exactly. An incorrect tip size will not engage the fastener and can damage both the screw and the bit. Verify that the fastener calls for a #8 spanner before purchasing.

How it compares

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

Price $1.17
Cheaper than about 99% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameTuff Stuff
Model nameSP8100
Product typeDrill Bits

Questions about this item

Which spanner bit size fits my #8 fastener?

The SP8100 is a #8 spanner bit, made for #8 spanner-head screws.

How does the 1" length work in a real drill?

At 1" long, the bit reaches recessed #8 fasteners while staying rigid in a 1/4" shank chuck.

What does the 1/4" shank limit in practice?

The 1/4" hex shank fits any drill or driver with a 1/4" chuck or quick-change holder.

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