Metric aircraft countersunk machine screws

No they’re philips screw.

On Saturday, February 3, 2018 at 9:52:31 PM UTC-5, Charles Longley wrote:
No they’re philips screw.

Sorry - I should have been more clear: could you substitute the Philips type with the hex-insert type as per DIN 7991 / ISO 10642?
Uli
'AS'

The head diameter on that screw is too big. I need a 4 mm screw with a head diameter around 6.5 mm. I am not sure what the countersink angle is. Looks closer to 100 though.

On Saturday, February 3, 2018 at 11:21:17 PM UTC-5, Charles Longley wrote:
The head diameter on that screw is too big. I need a 4 mm screw with a head diameter around 6.5 mm. I am not sure what the countersink angle is. Looks closer to 100 though.

If it is not 90degr., then it is not likely to be a metric screw! Just because the Blanik is from Europe doesn't mean that the hardware they used on that glider is metric. My Caproni was made in Italy and it uses all imperial sized hardware.
Uli
'AS'

The empty package says 4 mm and a 4 mm screw from the hardware store screws in perfectly. Sooo I am guessing it’s a 4 mm screw....

On Saturday, February 3, 2018 at 11:56:41 PM UTC-5, Charles Longley wrote:
The empty package says 4 mm and a 4 mm screw from the hardware store screws in perfectly. Sooo I am guessing it’s a 4 mm screw....

Well, in that case, let us know what standard that strange screw is when you find it.
Uli
'AS'

On Saturday, February 3, 2018 at 8:21:17 PM UTC-8, Charles Longley wrote:
The head diameter on that screw is too big. I need a 4 mm screw with a head diameter around 6.5 mm. I am not sure what the countersink angle is. Looks closer to 100 though.

That head diameter is totally unrealistic; it should be about twice the shaft diameter. Grind the head down if you want it less, but you will have a very small shoulder as a result.

Tom