Thread size: M3
Length: 20 mm
Head shape: Internal hexagon countersunk
Material: Steel
Finish: Black, natural color
Thread type: Metric
Thread pitch: 0.5 mm

Threads according to DIN 7991. Requires an internal hexagon key. We offer a wide range of countersunk internal hexagon screws made from plain steel, available in various thread sizes and lengths. Details can be found in the datasheet and the series overview. If plain steel with a black oxide finish is not what you are looking for, we also offer the countersunk internal hexagon screws in bright zinc-plated or alternatively in A2-(306) and A4-(316) stainless steel. Metric countersunk screw. Our popular countersunk internal hexagon screws are an excellent choice when you need a fastener that sits flush or below the surface of your material. Our RS Pro countersunk screws with metric threads are made from steel grade 10.9 and are designed for light-duty applications with limited space. These fasteners feature a black finish that provides an attractive, high-quality appearance in any setting.

Features and benefits:

• Marking on the head
• More durable than grade 8.8
• Nominal value of 1040 N/mm²
• Yield strength of 940 N/mm²

Typical applications:

• Machine tool construction
• Safety protection
• Panel manufacturing.