Drill-Tec Extra Heavy Duty #15
Roofing Fastener
The Drill-Tec Extra Heavy Duty #15 Roofing Fastener is a specialized, high
performance fastener designed to secure insulation and single-ply membrane to steel,
O.S.B., or aluminum roof decks.
Specification
The fastener will be a Drill-Tec Extra Heavy Duty #15 Roofing Fastener with
a thread diameter of .275. The fastener must have 12 threads per inch and a drill
point. Also, the fastener must be heat treated per specification OMG-1. The Drill-Tec
Extra Heavy Duty #15 Roofing Fastener will be used with a Factory Mutual approved,
Drill-Tec round pressure plate or pressure bar. The fastener must be made in U.S.A.
coating requirements
The fastener will be coated with the Drill-Tec CR-10 corrosion resistant coating.
When subjected to 30 Kesternich cycles (DIN 50018), the fastener must show less
than 15% red rust and surpass Factory Mutual Approval Standard 4470.
Application
The Drill-Tec Extra Heavy Duty #15 Roofing Fastener should always be tested on site
by a GAF representative to determine performance and proper installation procedure.
Call GAF to schedule testing.
Note: Make sure not to overdrive the fastener. Fastener must be
tight enough so that the plate doesn’t turn. Factory Mutual requires that the fastener
penetrates the steel deck at the top flute.
Physical Data
Head Diameter: .435
Head Style: #3 Phillips Truss
Thread Diameter: .275
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