DIN 7995 Metric Pozi Raised Countersunk Wood Screw Zinc Plated Stainless Steel Screws

DIN 7995 Cross Recessed Metric Pozi Raised Countersunk Head Wood Screw, Zinc Plated

1. Descriptions:

Wood screw: Primarily designed for finish work in wood; medium to coarse threads and usually with a smooth portion of shank under the head that allows the screw to slip through the top material while the threaded portion bites into the mating material below; commonly with a flat head but also available with a variety of decorative head shapes.

Our factory provide standard and non-standard wood screws include DIN7995,DIN7997,DIN95, DIN96, DIN97,DIN571 and other screws with both carbon steel and stainless steel.They are available in all shapes,sizes and numerous different head types.

2. Specifications:

3. Applications:

Driving a wood screw directly into oak lumber often causes the screw head to strip out or the screw shank to twist apart. Softer wood compacts when screws enter, but dense oak hardwood resists the cutting action of threads. Drilling a starter hole to match the screw diameter solves installation problems, but tannic acid in oak could react with some common metal fasteners, causing disfiguring dark streaks in the wood.

Different thread configurations make some types of wood screws work better in hardwood like oak. Double-thread wood screws require more torque to drive but sink into the wood faster because of a greater pitch angle. The extra turns of thread increase the screw's holding strength in dense hardwood. Double-thread screws actually hold two separate threads cut with the same pitch, so the tip of the screw shows two thread starting points. Since woodworkers drill pilot holes for screws in oak, gimlet tips work well. The screws don't need self-tapping points.

4. More pictures:






DIN7995 RAISED COUNTERSUNK HEAD CROSS RECESSED WOOD SCREWS

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