Internet #300662468

Model #23321

Store SKU #1002419402

#9 x 2-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (100-Pack)

  • Serrated head for flush seating
  • Star drive with T-25 bit for one-handed installation
  • Serrated hi-low thread and sharp point for immediate pick up
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Frequently Bought Together

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Price:
$833

Product Overview

The Rock-On 2-1/4 in. Cement Board Screws are designed for attaching Durock, Wonder board or equivalent glass-mesh cement backerboard to wood or light gauge steel studs. Rock-On's patented serrated head design countersinks for flush seating at any angle, providing a smooth surface for tile. The Star drive recess with T-25 bit provides StikfitTM for 1-handed installation. Rock-On screws feature a Climacoat corrosion resistant finish that prevents rust from bleeding into grout and are perfect for use in high moisture areas such as baths, showers, countertops and floors. Conforms to ANSI A108.11 for cement board attachment. Rock-On screws can be installed with a standard impact or drill/driver and T-25 Star drive bit (included with product) for cement board fastening done right.
  • Serrated head design for flush seating even at an angle
  • Star drive with T-25 bit provides StikfitTM for easy 1-handed installation and eliminates cam-outs
  • Serrated thread forms require less torque for faster installation
  • Patented sharp point offers immediate pick-up and eliminates the need to pre-drill
  • Patented design allows attaching close to edge on cement board, drastically reducing fractures or blow outs
  • Premium corrosion resistant finish
  • Use to attach cement board to wood or light gauge steel studs
  • Ideal for use in high moisture areas such as showers, backsplashes, countertops and floors
  • Conforms to ANSI A108.11 standards for cement board attachment
  • Best Screws And Nails For Drywall

Info & Guides

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#9 x 2-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (100-Pack)
#9 x 2-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (100-Pack)#8 x 2-1/4 in Phillips Flat-Head Fiber Cement Board Screw (1 lb. Pack)
BrandPro-TwistRock-OnBacker-OnPro-Twist
Name#7 x 2 in. Phillips-Bugle Head Coarse Thread Drywall Screw (1 lb. Pack)#9 x 2-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (100-Pack)#9 x 2-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (100-Pack)#8 x 2-1/4 in Phillips Flat-Head Fiber Cement Board Screw (1 lb. Pack)
Price
$797
$833
$894
$1297
Ratings
(49)
(46)
(69)
(5)
Screw Length2 in2-1/4 in2-1/4 in2-1/4 in
Size#7#9#9#8
Drive StylePhillipsStarStarPhillips
Head StyleBugle HeadFlat HeadFlat HeadFlat Head
Fastener/Connector MaterialSteelSteelSteelSteel
FeaturesCoatedSelf Drilling,Self TappingCoated,Self Drilling,Self TappingSelf Drilling
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Specifications

Dimensions

Screw Length
2-1/4 in
Thread Pitch
0

Details

Color Family
Gray
Drive Style
Star
Fastener Plating
Zinc
Fastener Type
Drywall Screw
Fastener/Connector Material
Steel
Features
Self Drilling,Self Tapping
Finish
Zinc-plated
Finish Family
Zinc
Head Style
Flat Head
Included
Driver Bit
Interior/Exterior
Interior
Measurement Standard
SAE
Package Quantity
100
Product Weight (lb.)
1.1
Returnable
180-Day
Size
#9

Warranty / Certifications

Manufacturer Warranty
ITW Brands warrants that this product is free from defects in material and workmanship. ITW Brands’ sole liability for any breach of this warranty shall be to replace this product or refund the purchase price.

Questions & Answers

1Questions2Answers

What kind of anchors are best if screwing into a painted masonry shower wall directly, no studs?

Asked by Mik November 12, 2020
2
Answers

It will be dependent on what you are fastening. Tapcon and Redhead brands carry concrete and masonry anchors.

Customer Reviews

  • 46 Customer Reviews
  • 4.8 out of 5 stars overall
100% of customers recommended.
Overall Ratings
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Grips into materials very well and leaves screw head flush on boards.
Grips into materials very well and leaves screw head flush on boards.
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Work great, start easily, drive flush, longer length goes through Durock+ drywall and into studs.
Work great, start easily, drive flush, longer length goes through Durock+ drywall and into studs.
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Easily grabbed cement board and self-drilled flush to its surface...
Easily grabbed cement board and self-drilled flush to its surface every time.
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Good grip, seats flush
These performed well, easily fastening into Durock. I used two layers of 1/2" cement boards and this is the length recommended for such a task. Drop down to 1 5/8" for a single 1/2" board.
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Driver included (Great addition) Screws start easy and hold tight....
Driver included (Great addition) Screws start easy and hold tight.
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Good product, works well. Really appreciate that the drive accompanies...
Good product, works well. Really appreciate that the drive accompanies the screws.
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Rating provided by a verified purchaser...
Rating provided by a verified purchaser
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WORKED PERFECT FOR MY BATHROOM PROJECT...
WORKED PERFECT FOR MY BATHROOM PROJECT
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Are use these to put hardy board on a wall...
Are use these to put hardy board on a wall that had to be tiled these things go in very quickly and do a great job holding it tight
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