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#9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (575-Pack)

$3436
  • Seats flush even when driven at an angle
  • One handed installation (includes T-25 star drive bit)
  • Immediate pick-up into cement board
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Product Overview

The Backer-On 1-5/8 in. Cement Board Screws are designed for attaching HardieBacker or equivalent fiber cement backerboard to wood or light gauge steel studs. Backer-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. Backer-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. Backer-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

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From the Manufacturer

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#9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (575-Pack)
#9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (575-Pack)#9 x 1-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (750-Pack)
BrandGrip-RiteBacker-OnRock-OnRock-On
Name#6 x 1-5/8 in. Philips Bugle-Head Coarse Thread Sharp Point Drywall Screws (5 lbs./Pack)#9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (575-Pack)#9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (575-Pack)#9 x 1-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (750-Pack)
Price
$2597
$2998
$3035
$3035
Ratings
(1552)
(818)
(636)
(636)
Screw Length1-5/8 in1-5/8 in1-5/8 in1-5/8 in
Size#6#9#9#9
Drive StylePhillipsStarStarStar
Head StyleBugle HeadFlat HeadFlat HeadFlat Head
Fastener/Connector MaterialSteelSteelSteelSteel
Product Weight (lb.)5 lb4.42 lb4.42 lb4.67 lb
FeaturesCoatedCoated,Self Drilling,Self TappingCoated,Self Drilling,Self TappingCoated,Self Drilling,Self Tapping
Interior/ExteriorInteriorInteriorInteriorInterior
Finish FamilyBlackZincZincZinc
Package Quantity995575575750
View ProductView ProductView ProductView Product

Specifications

Dimensions

Screw Length1-5/8 inThread Pitch (mm)2.6 mm
Threads Per Inch (TPI)9.8

Details

Color FamilyGreenDrive StyleStar
Fastener PlatingZincFastener TypeDrywall Screw
Fastener/Connector MaterialSteelFeaturesCoated,Self Drilling,Self Tapping
FinishZinc-platedFinish FamilyZinc
Head StyleFlat HeadIncludedDriver Bit
Interior/ExteriorInteriorMeasurement StandardSAE
Package Quantity575Product Weight (lb.)4.42 lb
Returnable90-DaySize#9

Warranty / Certifications

Manufacturer WarrantyITW 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.

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Customer Reviews

  • 4.7
    out of 818 reviews
  • 91%recommend this product
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Showing 1-10 of 818 reviews
Excellent Screw for any backer board
Every screw is perfect. Of course when I hit a nail head underneath then the screw cannot penetrate, but that was rare. This screw made the entire backer board project ALMOST fun! The tip easily penetrates, and the screw head has a digging action which makes the flush setting that-more-easier.
by
    • Recommended
    1 found this review helpful
    These screws were easy to use and work well with the Hardibacker board. They drive down into the...
    These screws were easy to use and work well with the Hardibacker board. They drive down into the board well making it easy to level tile without a screw sticking up proud of the surface.
    by
    • Verified Purchase
    • Recommended
    1 found this review helpful
    These screws worked as expected. Most screw heads countersunk the first time. The screws that wer...
    These screws worked as expected. Most screw heads countersunk the first time. The screws that were still exposed above the surface were my fault for stop driving them short. When I found the exposed heads they went in deeper with a little more effort with the impact driver.
    by
    • Verified Purchase
    • Recommended
    Worked just like it was recommended on video about Hardie Cement Board
    Worked just like it was recommended on video about Hardie Cement Board
    by
    • Verified Purchase
    Forget it if you wanna put 1/2” hardie board
    Cheap and flimsy. It won’t go through and lots of energy to work with. Should have stick with GRKs. Wanted to try these but now I know what a junk they are.
    by
      3 found this review helpful
      Awesome screws for use with Hardy board. It cuts thru the board quick and doesn't split the mater...
      Awesome screws for use with Hardy board. It cuts thru the board quick and doesn't split the material.
      by
      • Verified Purchase
      • Recommended
      Excellent countersink desgin, Durable anti corosive finish, reliable star head drive tip included...
      Excellent countersink desgin, Durable anti corosive finish, reliable star head drive tip included. My application through Hardie Panel and existing 1/2" composite exterior resulted in a solid to stud finish.I give this is a professional product my highest rating.
      by
      • Verified Purchase
      • Recommended
      Excellent product. Very reliable. Years ahead of phillips head screws.
      Excellent product. Very reliable. Years ahead of phillips head screws.
      by
      • Pro
      • Verified Purchase
      • Recommended
      Excellent for All Cementitious board
      Excellent for All Cementitious board
      by
      • Verified Purchase
      • Recommended
      Great Product.
      Great Product.
      by
      • Verified Purchase
      • Recommended
      Showing 1-10 of 818 reviews