Screw Cimco 193099 25 mm Zinc Plated Steel 4 mm Diameter

The Cimco 193099 screw is a zinc-plated steel fastener with a length of 25 mm and a shaft diameter of 4 mm designed for general utility applications. Its corrosion-resistant plating and standard dimensions make it suitable for assembly, repairs, and fastening tasks across household, workshop, and light industrial environments.

Advantages

The zinc plating provides enhanced resistance to rust and surface corrosion compared to bare steel, extending service life in indoor and mildly humid conditions. The 4 mm diameter and 25 mm length deliver a balanced combination of shear strength and embedment depth for secure joints in metal, wood, and composite materials. Manufactured to consistent dimensions, the screw offers predictable fit and torque behavior for reliable installation with common manual and powered drivers.

Suitable for

• General household repairs and furniture assembly
• Mounting small fixtures and brackets
• Workshop projects using metal, wood, or plastic components
• Light-duty maintenance in utility and service equipment

Key specifications

• Material: zinc-plated steel for corrosion protection
• Length: 25 mm
• Diameter (shaft): 4 mm
• Head and drive type: compatible with common manual and power drivers (ensure matching drive bit)
• Recommended application environments: indoor and mildly humid conditions

How to use

Select a matching driver bit to avoid cam-out or damage to the screw head. Pre-drill a pilot hole when fastening into hard materials such as dense hardwood or metal to reduce splitting and to ensure accurate alignment; choose a pilot diameter slightly smaller than 4 mm. Drive the screw with steady pressure until the head is flush or at the desired depth, avoiding over-tightening which can strip threads or damage substrates. For repeated installations, inspect the screw for plating wear and replace if significant corrosion or deformation is present.

Usage recommendations

For outdoor or high-humidity applications, consider using stainless steel or specially coated fasteners; use appropriate protective washers if joining dissimilar metals to minimize galvanic corrosion. Store unused screws in a dry environment to preserve the zinc plating.