8.8 grade zinc hexagon socket head half-thread screws

Hexagonal copper stud motherboard hexagonal isolation column chassis support column copper pillar ea

Circlips for holes GB /T 893.1 - 1986

Spring washers Light spring washers GB/T 859-1987

Dacromet spring washers GB 93 - 1976

Wave spring washersGB/T 955-1987

Large flat washer GB/T 96.1

External Serrated Lock Washers GB/T 862.2-1987

304 internal serrated lock washerGB/T 861.2-1987

8.8 grade black hexagon socket flat point set screws GB/T 77-2007

12.9 grade hexagon socket set screw GB/T 78-2007

Hexagonal nut DIN934 stainless steel 304 316 material

Hexagonal cap nut 304 stainless steel GB /T 923 - 2009