DIN 6902 Screw with Captive Flat Washer

The European standard DIN 6902 applies to the screw with captive flat washer. Their use increases the contact area on the material, which reduces pressure. The screw with captive washer is used for joining thin-sheet materials: the increased contact area prevents the formation of cracks. The fastener is in demand in machine building and is suitable for joining parts of various mechanisms and assemblies. It is used in the automotive industry, machine tool building and other sectors.

Material and features

The screw with washer is made of high-strength carbon steel. To improve corrosion resistance, the metal is coated with a layer of zinc by electroplating. Stainless steel A2 and A4 is also used — thanks to its alloy composition it has increased resistance to external influences.

Screw DIN 6902 has the following characteristics:

• Heads can have any standard shape, except countersunk and raised countersunk.
• The standard provides for 5 design variants depending on the shape of the washer used.
• Normal and heavy-duty designs are possible depending on strength requirements.

Ordering conditions

FLOK supplies products wholesale and retail.