# Backer-On #9 x 1-5/8 in. Star Drive Serrated Head Cement Board Screws (140-Pack)

**Brand:** [Backer-On](https://shop.coreranger.com/brands/Backer-On)
**Model #:** 23510
**SKU:** HD-314498756
**Price:** $13.87 · in stock
**URL:** https://shop.coreranger.com/product/backer-on-9-x-1-5-8-in-star-drive-serrated-head-cement-board-screws-140-pack-314498756

## Specifications

| Spec | Value |
|---|---|
| Size | #9 |
| Features | Self Tapping |
| Head Style | Bugle Head |
| Returnable | 90-Day |
| Drive Style | Torx |
| Screw Length | 1-5/8 in |
| Thread Style | Serrated Thread |
| Fastener Type | Cement Board Screws |
| Fastener Color | Green |
| Fastener Plating | Polymeric Zinc |
| Package Quantity | 140 |
| Fastener Material | Carbon Steel |
| Interior/Exterior | Interior |
| Measurement System | Inches |
| Product Weight (lb.) | 1.06 lb |
| Manufacturer Warranty | Backer-On® Rock-On®Limited 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. |

## Description

Backer-On Rock-On 1-5/8 in. cement board screws (140 pack) are the premier fastening solutions for installing cement boards. The patented serrated head design countersinks for flush seating at any angle, providing a smooth surface for tile installation. The star drive recess combined with Stikfit bit supports easy one-handed installations and eliminates cam outs. The premium corrosion resistant finish prevents rust from bleeding into grout, making Backer-On Rock-On screws the perfect choice for use in high moisture areas such as bathrooms and kitchens.

• Backer-on rock-on cement board screws are corrosion resistant
• Use to install Hardie Backer, durock,backerboard and cement board
• Ideal for use in showers, backsplashes, countertops and floors