High power LED and heatsink mount

The mounting brackets provided with most sets of high power LEDs with heatsink and cooling fan - like this one: https://www.aliexpress.com/item/110V-220V-50W-380NM-840NM-Full-Spectrum-LED-Heatsink-Cooler-lens-power-cable/32822792580.html?spm=a2g0s.9042311.0.0.4cde4c4dGDm64i - are useless, so i made one myself.

BOM:

• 4x M3 nuts
• 4x M3 lock nuts
• 4x M3x16 screws
• 4x 10 mm springs (wire diameter 0,5 mm; inner diameter 3,5 mm)
• 12x DIN 9021 3 mm washers (inner diameter 3,2 mm; outer diameter 9 mm; height 0,8 mm)

For maximum strength print massive with 2 mm perimeter.
Print settings i used: 0,3 mm resolution, 2 mm perimeter, 2 mm bottom layers, no top layer, 20 % "Tri-Hexagon"-infill, no support.