1871538 - 

Metric Thread A4 Socket Hexagon Cap Head Screws
The RS Pro hexagon head socket cap screws have a narrow head and are perfect for use in hard to reach areas. The fasteners are good in machine repair and maintenance applications also in many other sectors including food and beverage, automotive and aerospace. This range of fasteners are produced from A4 (316) Stainless Steel making them ideal for use in the food and beverage, offshore and marine industry. A4 (316) stainless steel has greater corrosion resistance than A2 Stainless Steel but is more expensive, although more affordable than Titanium which provides even greater levels of corrosion resistance.
Standards:

Threaded in accordance with Din standard 912 / ISO standard 4762