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#9 x 1-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (185-Pack)

$1131
  • Seats flush even when driven at an angle
  • One handed installation (includes T-25 star drive bit)
  • Immediate pick-up into cement board
  • View More Details
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Product Overview

The Rock-On 1-1/4 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

Additional Resources

From the Manufacturer

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#9 x 1-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (185-Pack)
#9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (140-Pack)#8 x 1-5/8 in. Phillips Flat-Head Fiber Cement Board Screw (1 lb. Pack)
BrandGrip-RiteRock-OnRock-OnPro-Twist
Name#6 x 1-1/4 in. Philips Bugle-Head Coarse Thread Sharp Point Drywall Screws (1 lb./Pack)#9 x 1-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (185-Pack)#9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (140-Pack)#8 x 1-5/8 in. Phillips Flat-Head Fiber Cement Board Screw (1 lb. Pack)
Price
$697
$7.97
Save $1.00 (13%)
$1098
$1098
$1297
Ratings
(781)
(636)
(636)
(66)
Screw Length1-1/4 in1-1/4 in1-5/8 in1-5/8 in
Size#6#9#9#8
Drive StylePhillipsStarStarPhillips
Head StyleBugle HeadFlat HeadFlat HeadFlat Head
Fastener/Connector MaterialSteelSteelSteelSteel
Product Weight (lb.)1 lb1.14 lb1.07 lb1 lb
FeaturesCoatedCoated,Self Drilling,Self TappingCoated,Self Drilling,Self TappingCoated,Self Drilling
Interior/ExteriorInteriorInteriorInteriorInterior
Finish FamilyBlackZincZincBlack
Package Quantity238185140149
View ProductView ProductView ProductView Product

Specifications

Dimensions

Screw Length1-1/4 inThread Pitch (mm)2.8 mm
Threads Per Inch (TPI)9.0

Details

Color FamilyGrayDrive StyleStar
Fastener PlatingZincFastener TypeDrywall Screw
Fastener/Connector MaterialSteelFeaturesCoated,Self Drilling,Self Tapping
FinishZinc-platedFinish FamilyZinc
Head StyleFlat HeadIncludedDriver Bit
Interior/ExteriorInteriorMeasurement StandardSAE
Package Quantity185Product Weight (lb.)1.14 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.

Questions & Answers

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Customer Reviews

  • 4.8
    out of 636 reviews
  • 98%recommend this product
Filter by:
Showing 1-10 of 636 reviews
I only want to do the job right the first time
I chose the Rock On cement board screws because I only want to do the job right the first time.
by
  • Verified Purchase
  • Recommended
Cement boards with cement board screws work great....
Cement boards with cement board screws work great.
by
  • Verified Purchase
They worked good for what I needed
They worked good for what I needed
by
  • Verified Purchase
  • Recommended
These screws work very well , do not use regular drywall screws they will rust.
These screws work very well , do not use regular drywall screws they will rust.
by
  • Pro
  • Verified Purchase
  • Recommended
Grips into materials very well and leaves screw head flush on boards.
Grips into materials very well and leaves screw head flush on boards.
by
  • Verified Purchase
  • Recommended
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.
by
  • DIY
  • Verified Purchase
  • Recommended
This product was perfect for my remodeling job, which included tearing out the old backboard and...
This product was perfect for my remodeling job, which included tearing out the old backboard and installing new backboard in my shower room. The product was easy to use, well-suited to the purpose, and reasonably priced. Thanks to my local Home Depot staff, I had the right tools and supplies to do my job.
by
  • Verified Purchase
  • Recommended
They did what they are supposed too
They did what they are supposed too
by
  • Verified Purchase
  • Recommended
It is very good product and it is easy to use by head type
It is very good product and it is easy to use by head type
by
  • Verified Purchase
  • Recommended
Works great! Goes in just deep enough.
Works great! Goes in just deep enough.
by
  • Verified Purchase
  • Recommended
Showing 1-10 of 636 reviews