Screw threaded hexagon stand-off spacers of male to female type, made of brass.
Threaded spacers are used to stack or mount printed circuit boards and machine boards.
A standoffs spacer is used to keep the motherboard above the case, prevents motherboard from shorting out and helps cooling.

Specification:
Product Name: Hexagon Standoff Spacer
Thread Size : 4#-40
Male Thread Length : 12mm/0.47"
Hex Part Length : 5mm/0.2"
Total Size : 17 x 4.5mm/0.67" x 0.18"(L*D)
Material : Brass
Finish: Nickel Plating
Color: Silver Tone
Package Content : 100(+/-2%) x Hexagon Standoff Spacers