STAINLESS STEEL POZI RAISED COUNTERSUNK MACHINE SCREWS DIN 966Z

Pozi Raised Countersunk Machine Screws DIN 966Z — A raised, or oval, countersunk head combines the flush-seating taper of a standard countersunk screw with a domed section rising above the countersink line — a hybrid that keeps the practical benefit of a countersunk seat while giving a more finished, less austere appearance wherever the fastener stays visible once installed. DIN 966Z pairs that raised profile with a Pozidriv recess, which matters more here than it might elsewhere in the range, because a driver that slips during installation risks marking the visible domed top rather than a hidden bearing face — Pozidriv's more positive engagement reduces that risk compared with a plain slot. It's a natural fit for furniture, fittings and consumer products where appearance matters as much as the fixing itself, alongside general assembly wanting the improved cam-out resistance Pozidriv offers over slotted drives.

The tapered lower portion of the head matches standard countersunk geometry exactly, so DIN 966Z uses the same countersink hole as any flat countersunk screw of the equivalent thread size — the domed top sits proud of the surface by design and needs no additional recess. DIN 966Z itself fixes head diameter, dome height, recess dimensions and thread length for a given nominal size, giving a consistent, interchangeable part across suppliers.

A2 stainless is the sensible default for most visible fittings and furniture hardware used indoors. A4 is worth the extra cost for anything destined for outdoor, coastal, or washdown environments, since a visible fastener that develops surface staining or pitting is far more noticeable — and more damaging to the finished look of a product — than the same corrosion on a hidden fixing.

Match the thread to the tapped hole as usual, and choose this raised profile specifically where the fastener will be seen, reserving a flat countersunk head for purely functional, hidden fixings.

FAQs
How does a raised countersunk head differ from a standard countersunk head?
A standard countersunk head is flat-topped and sits fully flush. A raised, or oval, countersunk head has the same tapered seating profile but adds a domed section above the countersink line, giving a more finished, decorative appearance while still seating in a standard countersunk hole.

Why use Pozidriv rather than slotted on a raised countersunk screw?
Pozidriv provides more positive driver engagement and less cam-out than a slotted drive, reducing the risk of the driver slipping and marking the visible domed head — important given the raised head's decorative role.

Does DIN 966Z need a different countersink than the flat DIN 965Z countersunk screw?
No. The tapered seating section is identical between the two, so the same countersink hole suits both; only the visible portion of the head above the surface differs.