8" OMG Extra Heavy-Duty ROOFING FASTENER 500ct | XHD008B

8" Phillips Truss Head Extra Heavy-Duty Roofing Screws OMG XHD008B

The OMG Extra Heavy Duty Roofing Fastener (#15) is a specialized, high performance fastener designed to secure roofing materials to certain light gauge steel (20 ga. [0.95-mm] and lighter), O.S.B., plywood or aluminum* roof decks. Factory Mutual and Dade County approved.

While most items are in-stock, lead times may apply for some sizes. Ask us if this item is in-stock
Physical Data

• Fastener Length: 8" (200-mm)
• Thread Length: 4" (102-mm)
• Thread Diameter: .265-in. (6.73-mm)
• Head Diameter: .435-in. (11.04-mm)
• Head Style: #3 Phillips Truss Head (#3 Phillips bit included)
• Point Type: Self-Drilling
• Coating: OMG CR-10 corrosion resistant coating exhibits less than 15% red rust after 30 Kesternich cycles. CR-10 coating exceeds F.M. Approval Standard 4470.
• Weight 38 pounds

Features & Benefits

• Oversized heavy shank and thread diameters for enhanced pullout resistance in light gauge steel and aluminum roof decks.
• Deep buttress threads further increase pullout and backout resistance.
• Miniature drill point penetrates decks quickly and contributes to exceptional resistance to back-out as well as pullout.

Application

• For steel and aluminum* decks, 3/4-in.(20-mm) penetration is the minimum allowable. Factory Mutual requires that fasteners penetrate the top flute.
• For OSB and plywood*, 3/4-in. (20-mm) penetration through the underside of the board is the minimum allowable. For wood deck (wood beams, wood plank, tongue & groove), 1-in. (25-mm) embedment is the minimum allowable.
• Using a screw gun, drive the fastener until a slight depression is seen in the insulation and the plate. On rigid cover boards, care must be taken not to strip the deck.
• The strength of different roof decks can vary widely and can be adversely affected by moisture and other conditions. Therefore, it is recommended that a fastener pull test be conducted to help evaluate deck condition and fastener suitability. Call OMG to schedule testing.

Extra Heavy Duty Roofing Fastener Length Selection Procedure

1. If applicable, determine the thickness of the existing roofing material.
2. Add thickness of new insulation.
3. For steel and aluminum:Add 3/4-inch (20-mm) minimum fastener penetration.
4. For OSB and plywood, add 3/4-inch (20-mm) mimimum fastener penetration.
5. For wood plank (beam, tongue and groove), add 1-inch (25-mm) embedment.
6. If odd size requirement, always size up in length, not down.
   
   NOTE: Care must be taken not to overdrive the fastener. Fastener must be tight enough so that the plate doesn’t turn. For best results, use a variable speed 0–2500 RPM screw gun.
   
   To speed installation, this fastener can be used with the AccuTrac® System and is also available pre-assembled.
   
   *FM does not recognize OSB, plywood or aluminum deck types.