【RAF Electronic Hardware】M0594-3-SS,电路板硬件 - PCB 5mm, 3.2 ID, M3 ROUND METRIC SPACER
M0594-3-SS-20,METRIC ROUND SPACERPASSIVATE8MM
M0594-3-SS-26,METRIC ROUND SPACERBLACK OXIDE,
【RAF Electronic Hardware】M0594-4-AL,电路板硬件 - PCB 5mm, 4.3 ID, M4 ROUND METRIC SPACER
M0594-4-AL-7,METRIC ROUND SPACERCLEAR IRIDITE
M0594-4-AL-9,METRIC ROUND SPACERALODINE 12008
M0594-4-B,METRIC ROUND SPACERPLAIN BRASS8M
M0594-4-B-12,METRIC ROUND SPACERCLEAR ZINC8MM