Simpson CB3BLG158S CB3BLG Fiber-Cement Board Screw (Collated) - #10 x 1-5/8 in. #3 SQU (1500-Qty) is a Simpson Strong-Tie collated screw engineered specifically for dense fiber-cement-to-wood fastening applications. Designed for use with the Quik Drive PROLDHG2 underlayment/backerboard system, this coarse-threaded screw features a ribbed wafer head with countersinking nibs that deliver a clean, concealed finish on every installation.

Key Features

• 0.375-in. ribbed wafer head with nibs for easy countersinking
• #3 undersized square drive (2 driver bits in each box; replacement bit model BIT3SU)
• Coarse threads
• Type-17 point
• C-3 mechanically galvanized coating
• Straight collation
• Size: #10 x 1-5/8 in.
• Quantity: 1,500

Specifications

• Model No.: CB3BLG158S
• Screw Size: #10
• Length: 1-5/8 in.
• Head Type: Ribbed Wafer Head
• Head Diameter: 0.383 in.
• Drive Type: #3 Square, Undersized
• Thread Type: Coarse Threads
• TPI: 10
• Point Type: Type-17 Point
• Coating: Mechanically Galvanized, C-3
• Collation Type: Straight
• Collation Angle: Straight
• Compatible Tool: Quik Drive PROLDHG2
• Packaging Quantity: 1,500
• Country of Origin: Taiwan

Approved Applications

• Fastening Fiber-Cement Siding
• Dense fiber-cement board to wood

What's Included

• 1,500 CB3BLG158S collated fiber-cement board screws
• 2 driver bits (replacement bit model: BIT3SU)

Frequently Asked Questions

What tool is the CB3BLG158S designed to be used with?

This collated screw is designed for use with the Quik Drive PROLDHG2 underlayment/backerboard system, which automates and speeds up the fastening process for fiber-cement board applications.

What type of drive does the CB3BLG158S require, and are bits included?

The CB3BLG158S uses a #3 undersized square drive. Each box includes 2 driver bits. If replacements are needed, the compatible replacement bit model is BIT3SU.

What makes this screw suitable for fiber-cement board installation?

The CB3BLG158S features a 0.375-in. ribbed wafer head with nibs for easy countersinking, coarse threads for strong purchase in dense material, and a Type-17 point for efficient penetration - all designed specifically for fiber-cement-to-wood applications with a clean, concealed finish.

What corrosion protection does the C-3 mechanically galvanized coating provide?

The C-3 mechanically galvanized coating is a robust zinc coating applied through a mechanical process, providing enhanced corrosion resistance suitable for demanding exterior and construction environments where fiber-cement siding is typically installed.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.