Screw M5 x 16 mm DIN 7985, phosphated black with nylon washer, CAYMON KS500, pack of 100

Pack of 100 CAYMON KS500 cross-head screws M5 x 16 mm manufactured to DIN 7985 standard. Each screw is phosphated black to provide basic corrosion resistance and is supplied with a nylon washer to offer electrical insulation and prevent surface damage. These M5 pan-head screws are intended for general fastening tasks in electronics, enclosures, equipment racks and light mechanical assemblies where a standardized fastener with an insulating washer is needed.

Advantages

The DIN 7985 cross-head design ensures consistent engagement with Phillips drivers for reliable torque transfer during installation. Phosphated black surface treatment offers improved resistance to rusting compared with raw steel, while the included nylon washer provides electrical insulation and protects contact surfaces from scratching and marring. Supplied in a pack of 100, the set is convenient for repetitive assembly, maintenance or spare-part needs.

Suitable for

• Fastening components inside electronic enclosures and junction boxes
• Mounting equipment in 19" racks and cabinets
• Assembly of light mechanical structures and panels
• Applications requiring an insulating washer to separate metal parts

Key specifications

• Thread size: M5
• Length: 16 mm (measured from underside of head to end of thread)
• Head type: pan head with cross (Phillips) recess conforming to DIN 7985 geometry
• Surface finish: black phosphate
• Washer type: nylon insulating washer included with each screw
• Quantity: 100 pieces per pack
• Material: steel screw with synthetic (nylon) washer

How to use

Select an appropriately sized Phillips screwdriver or driver bit that matches the cross recess to avoid cam‑out and head damage. Prepare mating threads or tapped holes for M5 fasteners, ensure alignment of parts, and insert the screw through the washer and into the assembled elements. Apply steady torque until the washer compresses slightly and the joint is secure; avoid over-tightening to prevent stripping the thread or deforming the nylon washer.

Usage recommendations

For electrical or insulated assemblies, verify washer positioning so the nylon washer sits between conductive surfaces. When higher corrosion resistance is required, consider alternative finishes or stainless steel variants. Store in a dry environment to preserve the phosphate coating and keep driver tips in good condition to maintain correct engagement with the cross recess.