No12 for 5.5mm screws. No6 for 3.5mm screws. No14 for 6.3mm screws. No8 for 4.2mm screws. No10 for 4.8mm screws. BRASS SCREW CUP FINISHING WASHER TURNED TYPE. No.6, 8, 10, 12, 14 BRASS SCREW SOCKETS Decorative Cup Washer Cabinet Furniture.
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