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Internet # 322516916

Model # 99401

Store SKU # 1008445089

#9 x 2-1/2 in. Star Drive Bugle Head R4 Multi-Purpose Screw Combo Kit 2 of (100-per Pack)

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  • Faster Drive for Improved Productivity
  • Fast Bite Tip provides a fast start for one-step installation
  • For interior / exterior use
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Product Details

About This Product

GRKs R4 Multi-Purpose Framing Screw has 6 self-contained cutting pockets which act like a router and transport the drill dust away from the edge of the screw hole. They also widen the countersink hole only around the head shape. The screw head top closes the hole exactly, leaving no damaged fibers around the wider area of the head.


  • Use in wood, particle-board, cement fiberboard, plastic, sheet metal
  • Star drive eliminates stripping for improved productivity
  • Zip-tip allows for no-pre-drilling and 1 step application
  • Self-tapping
  • No pre-drilling
  • No stripped heads
  • Common project applications: remodeling, fencing, storage, cabinets, framing
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Product Information

Internet # 322516916

Model # 99401

Store SKU # 1008445089



Screw Length2-1/2 inSize#9
Thread Pitch (mm)2.2 mmThreads Per Inch (TPI)11.5


Drive StyleTorxFastener ColorBrass
Fastener MaterialCarbon SteelFastener PlatingPolymer
Fastener TypeWood ScrewFeaturesACQ Rated, Self Tapping
Head StyleBugle HeadIncludedDriver Bit
Interior/ExteriorExterior, InteriorMaterials FastenedWood to Wood
Measurement StandardSAEPackage Quantity100
Product Weight (lb.).01 lbReturnable90-Day
Thread StyleW-Cut Thread

Warranty / Certifications

Manufacturer WarrantyVisit our website at grkfasteners.com and type in warranty in the search box for detailed warranty information

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Customer Reviews

5 out of 5
  • 5 out of 2 reviews
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Showing 1-2 of 2 reviews
For multi-purpose fasteners Just make sure you install the correct screw head, which comes included Bugle head design, works awesome.
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My go to screws
These screws are high quality and dependable. These are my go to for multi-purpose screws.
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Showing 1-2 of 2 reviews