The TIMco Twin Thread Zinc Countersunk Woodscrew is designed for general use in softwood and various hardwoods. This traditional twin-thread screw features a single lead start for fast installation and is effective in soft timber applications. It is designed and manufactured to BS 1210 standards and includes a double countersunk head to reduce head shear and aid countersinking, with a parallel shank for faster insertion and greater pull-out resistance. The screw is partially threaded from 1 1/4 inch, made from C10-18 steel with zinc plating, and is compatible with plastic expansion plugs. It is optimized for performance in soft timber and masonry scenarios when used with a plastic plug.
Specifications
- Size and type: 7 x 1.5 inches twin-thread with single lead
- Material and finish: C10-18 steel, zinc plating 3–5 µm
- Hardness: surface up to 750 HV; core up to 450 HV
- Design: double countersunk head, parallel shank; partially threaded from 1 1/4 inch
- Point and thread: 25° point, 24° thread acceptance
- Use: for softwood and hardwood; suitable with plastic plugs
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