Made by Fastener Systems in West Chester, PA, USA
Below are the official specifications. The screws can be used for other purposes.
These are being sold by the pound. That is approximately 10 screws per pound. If you would like to buy in bulk, please contact me.
Lite-Deck Fasteners with total length of 4" with a square drive and offer coarse thread to provide high pullout resistance.
Use: Insulation
Fastener: Carbon Steel
Head: Square Drive
Deck Type: Gypsum, and Cementitious Wood Fiber
Measured length: 3.979"
Shank diameter: 0.325"
Thread diameter: 0.389"
Head diameter: 0.688"
Thread length: 2.894"
Application
The Lite-Deck can be installed into cementitious wood fiber decks without predrilling. A pilot hole is required for gypsum decks, hole size is determined by pullout results. Lite-Deck must penetrate the deck a minimum of 2" (51 mm). Using a screw gun, drive the fastener until a slight depression is seen around the plate, or with a very rigid insulation, watch for the plate to dimple. Care must be taken to not damage the roof deck and should never penetrate the underside of the deck. Choose the correct fastener length and do not overdrive or underdrive the fastener. Pullout tests are required prior to job start for technical evaluation.
If anyone is interested in the entire lot (or whatever remains), contact me and I will ship it through USPS flat rate to save you money. I have approximately 50lbs, give or take a pound or so.