STAINLESS STEEL HEX SOCKET + PIN SECURITY DRIVE BITS

Hex Socket + Pin Security Drive Bits — This bit matches the hex-socket-plus-pin recess used across that security screw range, with a bore drilled straight through the centre of the tip to clear the raised pin that otherwise blocks a standard Allen key or hex bit from seating at all. Because the security relies entirely on this pin clearance being correct, the bit has to be matched to the size of the screw's recess just as precisely as an ordinary hex bit does — an undersized bit rounds out the socket walls under torque, while an oversized one won't seat deep enough to reach the flats, so getting the across-flats size right matters as much here as the pin clearance itself. These bits are specified alongside the full Hex Socket + Pin security screw range: button, countersunk, raised countersunk, and self-tapping variants, and they'll also drive matching hex-plus-pin barrel nuts where that thread size is shared. Anywhere hex socket security screws are specified — enclosures, transport fixtures, public and leisure equipment — at least one matching bit needs to be kept on hand, since no generic hex key or bit will substitute; that's the entire point of the pin. As a driving tool it's made from hardened alloy tool steel rather than stainless, because resisting wear and rounding under repeated torque matters far more here than corrosion resistance — a stainless bit would blunt and round out considerably faster in regular use, undermining the very security function the range is built around if the bit itself fails prematurely. The bore-through profile isn't covered by a specific ISO or DIN standard, since it's a proprietary security feature layered onto a conventional hex-socket geometry, but the bit's shank generally follows the standard quarter-inch hex format under ISO 1173, so it fits ordinary bit holders and power tool chucks despite the specialised tip. Choosing between this and the equivalent Hex Socket + Pin Security Wrench Key comes down to use case: the bit suits repeated or powered driving in volume assembly work, while the wrench key is better for higher manual torque, tight access, or occasional use without a power tool to hand.

FAQs
How does this compare to a Hexalobular + Pin security drive bit?
Both clear a centre pin, but the recess shape differs — plain hex versus six-lobe — so bit and screw families are not interchangeable between the two ranges.

Can this bit be used as a standalone hand tool?
No — unlike the wrench key, the bit has no handle of its own and needs a bit holder, screwdriver body, or power driver to use.

Do different screw sizes in this range need different bits?
Yes, across-flats size and pin-bore diameter both scale with screw size, so the correct bit size must be matched to each screw diameter rather than assuming one bit covers the whole range.