SEBO M4 x 12 DIN 966 Screw for X Series, G Series and DUO — Single

DIN 966 is the head profile SEBO calls for at this fastening point on the X series, the G series and the DUO. The standard covers a cross-recessed raised countersunk head, the oval-topped form that pulls down into a chamfered seat so the screw finishes flush with a slight dome rather than standing proud. Part 129 is that screw in M4 x 12, supplied singly rather than in a pack.

Strip one during a brush roll or filter service and the panel it held sits proud, rattles on the next run, or works its way free entirely. Because the head is countersunk, a damaged one also stops centring itself in its seat, so the panel is pulled slightly out of line as the screw is tightened. Driving in the correct M4 x 12 pulls the cover flat again and keeps it there.

• Part number: 129
• Fits: SEBO X-series and G-series uprights, plus the DUO
• Thread: M4 machine thread, 12 mm long
• Standard: DIN 966, cross-recessed raised countersunk head
• Quantity: sold individually
• Ten-pack version: part 0129ER, the same M4 x 12 DIN 966 screw
• Other M4 x 12 head forms: part 0117ER to DIN 84 and part 0199ER to ISO 7380

Read what is stamped on the screw you removed and match it before ordering, since several M4 screws with different heads appear on one machine and the thread alone does not identify the part. If the same repair calls for a handful of these, the ten-pack under 0129ER covers it in one order.

Head form is the detail most easily overlooked on an M4 x 12. A pan head will start and tighten in a countersunk seat, but it bears on the rim of the chamfer instead of down its cone, so the panel is held on a narrow ring and the screw sits high. Ordering by part number rather than by thread size avoids that entirely.

This is the listing for searches such as SEBO X series M4 screw, SEBO G series DIN 966 fastener, SEBO DUO countersunk screw and genuine SEBO 129. Genuine SEBO part, shipped in 2-5 business days.