Screw hole centering ring, helper for pull/hydraulic screws for screw hole system.
Plastic screw punch centering ring. Ideal helper for lag screws or hydraulic screws in screw punch systems. To be used in case of too large holes in e.g. control cabinets to center pull bolts (screw holes). The centering ring can be used on all known screw punch designs that separate the waste piece - also third-party makes! Suitable for 2- and 3-part punch systems. The present ring size 3 is suitable for connecting screws 19 mm (UNF3/4-16) for both manual and hydraulic use. The ring in size 3 can be used up to a hole diameter, in the sheet metal to be processed, of 28 mm. The smallest hole diameter, in which the ring still mediates between tool and workpiece, is 20.4 mm. Pack of 10 pieces.
