Abstract: A fastener and a nosepiece for use in attaching lath to a support. The fastener includes a screw and a spacing element, in which the spacing element is adapted to threadingly penetrate the lath and abut the support. The lath is retained between the spacing element and the head of the screw and is thereby held away from the support in order to allow plaster to properly extrude through openings in the lath. The nosepiece is attachable to a driving tool and has rigid prongs which reach through openings in the lath. Travel of a bit on the driving tool is limited so that automatic disengagement occurs to prevent over-driving of the screw. The prongs ensure that the lath is held a predetermined distance from the support.

Abstract: A two piece hole-drilling and fastener-driving assembly consists of a three-sectioned drill bit and a three-sectioned drive collar. The drill bit has a fluted drilling section, a hexagonal driving section and a tapered section adapted to be received in a complementarily shape chuck of a rotary hammer. The drive collar has a first hexagonal portion which mates with the hexagonal drill bit section and is driven thereby. A second tubular portion receives the drilling section when the hexagonal portions are engaged. A third portion includes a fastener-engaging recess. This portion may take the form of a removable socket and the collar provided with a spring-biased ball retainer to hold the socket thereon and a second such retainer to hold the collar on the drill bit. The drill bit is inserted in the rotary hammer chuck and a hole is drilled in the workpiece. The drive collar is then slipped over the drill bit and a self-tapping fastener driven into the just-drilled hole.