Product overview
The STEAM AK4060H is a black ball link set for AK400/420 helicopters. Its construction incorporates stainless steel anti-burst rings and a thread-depth inspection hole for observing screw engagement. The set contains four black AK400/420 ball links measuring M3.0×Φ4.5×Φ4.8×19.0mm and four Φ5.0 stainless steel anti-burst rings. The threaded installation rod diameter is Φ2.5mm.
Installation requires an effective screw engagement depth greater than twice the screw diameter. The ball and ball link require a zero-clearance fit while retaining smooth rotation. An HZ037 ball link reamer or WD40 lubricant may be used during fitting.



