Plastic flared ball cup, 10 mm ball, 18 mm centre, M6 × 1 thread

Plastic ball cup for a 10 mm ball, 18 mm centre distance and M6 × 1 thread.

It is the articulated end fitting of the gas spring: it clips onto a ball stud of the same diameter and lets the assembly pivot as the lid or tailgate opens.

Two dimensions have to match. The 10 mm ball diameter must be the same as the stud it mounts on, or the cup will not clip on. The M6 × 1 thread goes onto the gas spring rod and belongs to the 6/15 and 8/18 series. The 18 mm centre distance sets how far the pivot sits from the rod end.

Ball: 10 mm · Centre: 18 mm · Thread: M6 × 1