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SKU: CSS-412

.275" x 4-1/2" Conquest Structural Screw - T-30 Star Drive, Pkg 50

.275" x 4-1/2" Conquest Structural Screw - T-30 Star Drive, Pkg 50!

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SKU: CSS-412

.275" x 4-1/2" Conquest Structural Screw - T-30 Star Drive, Pkg 50

$36.99
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Ships Jun 29 when you order now

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Specifications

Diameter: 0.275"
Length: 4-1/2"
Thread Length: 3"
Head Diameter: 0.74"
Drive Type: T30 Star Drive
Head Type: Flat Head
Point Type: Type 17 Point
For Treated Lumber: No
Material: Carbon Steel
Finish: Plain
Manufacturer Name: Conquest Fasteners
Quantity: 50
Description

.275" x 4-1/2" Conquest Structural Screw - T-30 Star Drive, Pkg 50

The .275" x 4-1/2" Conquest Structural Screw is engineered for heavy structural wood connections requiring deeper embedment and superior clamping strength. Designed for demanding framing applications, this screw delivers consistent performance in deck construction, ledger installations, and multi-member wood assemblies. The T-30 star drive ensures strong bit engagement under high torque, helping contractors maintain control during installation.

Note: ICC-ES code approved for structural wood applications.

.275" x 4-1/2" Heavy-Duty Structural Wood Screw with T-30 Drive

With its extended 4-1/2" length and robust .275" diameter, this structural screw penetrates deeply into dimensional lumber and engineered wood, creating secure load-bearing connections. The aggressive self-tapping thread design reduces installation time while maintaining dependable holding power in dense materials.

Key Features

  • 4-1/2" Extended Length: Provides deeper embedment for thicker structural members.
  • .275" Structural Diameter: Built for high-strength wood-to-wood connections.
  • T-30 Star Drive: Improves torque transfer and reduces cam-out under load.
  • Self-Tapping Threads: Designed to eliminate predrilling in most wood applications.

Common Applications

  • Deck Ledger Installation: Secures ledgers to structural framing members.
  • Beam-to-Post Connections: Reinforces load-bearing wood assemblies.
  • Structural Blocking: Strengthens framing between joists and studs.
  • Pergolas and Outdoor Structures: Ideal for heavy-duty exterior builds.
  • Remodeling and Reinforcement: Adds strength to existing wood framing.

Installation Tips

  • Use a T-30 Bit: Ensure full star engagement for maximum control.
  • Drive at Steady Speed: Allow threads to cut cleanly into dense lumber.
  • Seat Head Flush: Tighten until flush without overdriving the wood fibers.
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× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit: www.P65Warnings.ca.gov.

Customer Reviews

Based on 7 reviews
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R
Richard Brooks
great screws, work perfect

nice

J
John Bailey

These are awesome screws for big rough cut lumber

H
Hayne Drake
Screws are flawless

I was shocked with the cost of shipping, but the 50 screws I ordered were exactly what I needed for my deck rebuild. Shipping was almost as much as the screws themselves. I could understand that for a larger order, but for 50 screws, I felt that was unnecessary. A few dollars would cover the real shipping cost for the small box of screws.