Bulkhead Cable Gland Clamp
A screw-tightened cord grip that bolts inside a project box and clamps a 4.5–7 mm round cable so pulls on the lead never reach the solder joints. The 7 mm bore has three grip ribs and a split jaw closed by one M3 x 25 screw with a captured M3 nut; the rear flange bolts down with two M3 screws on 26 mm centres. Overall 40 x 34 x 20 mm, prints flat with no supports.
electronics strain-relief cable-gland enclosure