Hexagon Head Pipe Plugs DIN 910 — Where the socket-drive plugs sit flush or recessed into the port, DIN 910 has an external hexagon head standing proud for a spanner or socket wrench, giving access to more installation torque than an Allen key comfortably allows and suiting situations where internal socket access simply isn't practical - limited clearance for a hex key, a plug that needs to be driven up tight against a stop, or spanner tooling already being the standard on site. Functionally it serves the same purpose as DIN 906: blanking an unused threaded port on a manifold, valve body, or pipework fitting, without the collar and sealing washer that DIN 908 adds for parallel-thread ports. Sealing is typically achieved the same way as the plain socket plug, through the thread form itself on tapered threads, backed up with sealant or PTFE tape as standard practice. The main trade-off against the socket-drive versions is profile: the external hex head sits proud of the port face, so it's worth checking clearance around the fitting before specifying this plug where the socket variants would otherwise sit flush. Typical settings include pneumatic and general fluid pipework, plant and machinery ports, and any installation where a wrench is the more practical or available tool compared with an Allen key. As with the rest of the pipe plug range, matching thread type and size exactly to the port is the main selection step - a mismatched tapered or parallel thread won't seal properly regardless of head style. Grade choice follows the same logic across this fitting family: A2 handles general indoor pneumatic and low-corrosion fluid systems adequately, while A4 is worth specifying for washdown areas, coastal or marine installations, food and beverage plant, or chemical process pipework, where its resistance to chloride-driven corrosion meaningfully extends service life over A2.
FAQs
Does the external head increase the overall profile compared with the socket plugs?
Yes - the hex head sits proud of the port, which is worth checking where clearance around the fitting is tight.
Is DIN 910 generally easier to remove than a socket plug once installed?
Often, yes, in tight or corroded installations - a spanner or socket wrench on an external hex generally allows more leverage than an Allen key on a rounded or partially seized socket, which can matter for plugs that see infrequent removal.
Can DIN 910 be substituted anywhere DIN 906 is specified?
Functionally yes for blanking the same thread and port, provided there's enough external clearance for the hex head - the main check is available space around the fitting rather than thread compatibility.