STAINLESS STEEL HEXALOBULAR + PIN SECURITY DRIVE BITS

Hexalobular + Pin Security Drive Bits — Matches the six-lobed star recess found on hexalobular+pin security screws, with a bore cut to clear the raised pin at the centre — a standard hexalobular bit can't get past the pin at all, since its tip is solid rather than bored through. It is designed to match the full Hexalobular + Pin security screw range: button, countersunk, raised countersunk, and self-tapping versions, as well as Hexalobular + Pin Security Barrel Nuts, provided the bit size is matched to the screw's recess size. That matching matters as much here as it does with any hexalobular bit — an undersized bit rounds the lobes under torque, while an oversized one won't seat deep enough to engage them properly, and neither problem is unique to the pin clearance itself. Wherever this security screw range is specified — enclosures, transport fixtures, public and leisure equipment, street furniture — at least one matching bit needs to be kept on hand, since a standard Torx bit simply bottoms out on the pin and transmits no torque at all. 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, which would undermine the security function if the bit itself failed prematurely in service. The bore-through profile isn't covered by a specific ISO or DIN standard, since it's a proprietary security feature layered onto the standard hexalobular geometry defined in ISO 10664, 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 Hexalobular + 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
What screws does this bit drive?
The full Hexalobular + Pin security screw range: button, countersunk, raised countersunk, and self-tapping versions, as well as Hexalobular + Pin Security Barrel Nuts, provided the bit size matches.

How does this compare to a Hex Socket + Pin security drive bit?
Both bit types clear a centre security pin, but the recess and bit profile differ — six-lobe versus plain hex — so each only fits its matching screw family.

Can this bit also 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 it.