Metallics 00SP10B Screwdriver Bit Hx 1/4" Spanner Point #10 1" (1pc)

It has a 1/4 inch hex shank, so it drops into any standard 1/4 inch hex bit holder, quick-change chuck, or impact driver collet. You can also run it in a three-jaw drill chuck or a hand bit driver. Overall bit length is 1 inch, the common insert-bit length.

Spanner, also called snake-eye or pig-nose, is a tamper-resistant head with two round holes set either side of center. The 00SP10B is the #10 size, matching spanner screws in that size range. A Phillips, Torx, or hex bit will not engage these heads, and that is the point of the drive, it keeps the public out of panels, fixtures, and restroom hardware.

Spanner bits are sized to the screw, and the 00SP10B is cut for #10 spanner screws. If your fasteners are #6 or #8, the pins will be too far apart to seat and you will round the holes out. Check the screw size stamped on the box or measure the shank before ordering, then match the bit number to it.

One bit per pouch. It ships as a single piece in a pouch pack, so if you are outfitting several techs or expect to wear bits out on a large security-fastener job, order a count per person rather than assuming a multi-pack.

Order Metallics 00SP10B. That is the manufacturer part number for the 1/4 inch hex shank, #10 spanner point, 1 inch bit, sold one per pouch.

The hex shank takes an impact collet, but spanner drive relies on two small pins carrying the whole torque load. Work at low speed and finish by hand on the seat. Metallics sells the 00SP10B through its electrical fastener line, which is where these tamper-resistant heads usually turn up, on panel covers, device plates, and fixture housings.