The spotter pin is welded to the sheet metal and the insulation is impaled over the nail. It is held in place with the addition of a galvanized steel washers. PC (metal) washers are used with PN's. Pins can be installed with all DYN-O-LITE, LF, MF and PBF Pinspotters.
30 ga steel
Duro Dyne Spotter Clip, Series: PC Series, Accessory Type: Spotter Clip, For Use With: PN Spotter Pin, Steel, Galvanized, 1-1/4 in L x 1-1/4 in W, Domestic