ITEM NAME:30Pcs M3 3mm Male Female Brass PCB Spacer Hex Stand-Off Pillar 30mm R3Q1 30Pcs M3 3mm Male Female Brass PCB Spacer Hex Stand-Off Pillar 30mm R3Q1 Nylon material, single hex head, male female type screw threaded, and It is ideal for mounting between PCB circuit boards and machine boards. Product Name : Hex Standoff Spacer Thread Size : M3 Male Female Hex Spacer Width : 4.5mm/0.18inch Male Thread Length : 6mm/0.24inch Body Length : 30mm/2.4inch Material : Brass Color : Gold Tone Net Weight : 111g Package Content : 30Pcs x Hex Standoff Spacer Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Nylon material, single hex head, male female type screw threaded, and It is ideal for mounting between PCB circuit boards and machine boards. Thread Size : M3 Male Female.