Drop Through Nails are used on metal deck to attach insulation to the ceiling. The pin is inserted through the deck, concrete is poured and once dry will hold the pin so the insulation can be attached.
Specifications:
Available in: Mild Steel
Head Diameter - 5/16"
12 or 14 gauge diameter spindle
Standard Lengths: up to 12"
Other lengths available on request
Self-locking Washers available in a variety of sizes and configurations.