Timco Twin-Threaded Woodscrews PZ Double Countersunk Zinc 12x3.5 Box of 100

The TIMco Twin Thread Zinc Countersunk Woodscrew is designed for general use in softwood and various hardwoods. It features a double countersunk head and zinc plating for corrosion resistance. The twin-thread design enables faster insertion and greater pull-out resistance, making it suitable for a range of applications. The screw is partially threaded from 1 1/4 inches, with a 60-degree twin-thread profile and a sharp point for easy penetration. Its construction from C10-18 steel provides consistent quality and durability, with surface hardness up to 750 HV and core hardness up to 450 HV to resist torque shear under load. In addition to timber, it is compatible with plastic expansion plugs commonly used in masonry and other substrates, offering reliable performance where a plastic plug is involved.

Features

• Twin-thread design enables faster insertion
• Higher pull-out resistance in softwoods and hardwoods
• Double countersunk head reduces head shear
• Zinc plating provides corrosion resistance (3–5 microns)
• Compatible with TIMco and other plastic expansion plugs

Technical specifications

• Size: 12 x 3 1/2 inches
• Material: C10-18 steel
• Surface hardness: up to 750 HV
• Core hardness: up to 450 HV
• Thread type: Partially threaded from 1 1/4 inches
• Point: 25° sharp point for easy penetration