Package Quantity: 500 per box
Price: $521.97
Item #OMG-CRH11B
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Description
The OMG CRH11B is an 11-inch #14 heavy duty roofing fastener designed for use with insulation and membrane systems on steel, wood, and concrete decks. It features deep thread geometry to maximize pull-out resistance. The fastener includes a 30° spade point and CR-10 finish for enhanced performance in roofing environments.
Key Features:
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Deep thread profile for strong grip and pull-out resistance
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30° spade point for efficient penetration into substrate
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CR-10 corrosion resistant coating to withstand weather and reduce rust
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#3 Phillips truss head compatible with common screw guns
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11-inch length accommodates thicker roof assembly layers
Specifications
- SKU / Model: CRH11B
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Thread diameter: 0.245 in (6.22 mm)
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Shank diameter: 0.190 in (4.82 mm)
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Head diameter: 0.435 in (11.04 mm), truss Phillips #3
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Thread pitch: 10 threads per inch
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Point type: 30° spade point
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Coating: CR-10 corrosion resistant coating
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Length: 11 in (280 mm)
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Threaded length: 4 in (102 mm)
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Minimum embedment (steel decks): ¾ in (20 mm)
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Minimum embedment (wood decks): 1 in (25 mm)
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Minimum embedment (concrete decks): 1 in (25 mm)
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Pilot hole: 3⁄16 in (5 mm), drilled at least ½ in (13 mm) deeper than embedment
How To
- Determine required fastener length by summing insulation + membrane (if any) thickness plus minimum embedment.
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Drill a 3⁄16 in (5 mm) pilot hole at least ½ in (13 mm) deeper than embedment depth.
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Place the fastener so its head is flush with the surface of the insulation, membrane, or plate.
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Drive using a #3 Phillips bit until a slight depression forms around the plate; avoid overdriving.
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Ensure all plates, boards, or membranes lie flat and stable before final drive.
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Conduct pull tests at representative locations to verify substrate and anchorage performance.
FAQs
Q: What special attributes does CRH11B have compared to shorter fasteners?
A: CRH11B allows for attachment through thicker insulation assemblies while maintaining required embedment depth in the deck.
Q: Which coatings does CRH11B use?
A: It uses the CR-10 corrosion resistant coating standard on OMG’s heavy duty fasteners.
Q: In what deck types is CRH11B usable?
A: It is usable in steel, wood, and structural concrete decks (with appropriate pilot hole and embedment).
Q: How many fasteners are in one box?
A: 500 per box.
Q: Should pull tests be performed when using CRH11B?
A: Yes, pull tests are recommended to validate performance in the specific substrate conditions.
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