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Cement Board Screws Rock-On No. 9 X 2-1/4" L Star Flat Head Zinc-Plated

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Backer-On 23520 Cement Board Screws Rock-On No. 9 X 2-1/4" L Star Flat Head Zinc-Plated

Item #: 23520 by ITW GLOBAL BRANDS

UPC #: 092097235205

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Features

Finish

Zinc-Plated

Thread Type

Serrated

Material

Steel

Application

Multi-Purpose

Length

2-1/4"

Head Type

Flat Head

Color

Green

Drive Style

Star

Number in Package

100 pk

Self Drilling

Yes

Packaging Type

Clamshell

Indoor or Outdoor

Indoor

Callout Size

No. 9

Defective Code

A

Driver Bit Included

Yes

Each Weight

1.040 LB

Hazardous Material

No

Returnable

Yes

Self Tapping

Yes

Sub Brand

Rock-On

Velocity

N

Product Type

Cement Board Screws

Height

5.38

Width

3.50

Country Origin Code

TW

Thread Size

9

Package Quantity

100 PK

Drive Size

T25

Nomenclature

23520 CEM BRD SCREW NO9X2-1/4

Point Type

Sharp

Product Overview
Backer-On Rock-On 2-1/4 in. cement board screws are designed for attaching Hardie Backer or equivalent fiber cement backerboard to wood or light gauge steel studs. Backer-On Rock-On 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 Stikfit for 1-handed installation. Backer-On 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. Backer-On Rock-On screws can be installed with a standard impact or drill/driver and T-25 Star drive bit for cement board fastening done right.