Pb fastener zinc plated steel ff spacers m5 packs of 10 pb fastener s58050x20 these zinc plated steel ff spacers m5 x 20mm from pb fastener amp components are 20mm long hexagonal m5 tapped spacers manufactured to a high standard using galvanised steel and designed with 2x female threads these quality spacers fit a 8mm spanner opening and come supplied in packs of 10 pb fastener s58050x20 zinc plated steel ff spacers m5 x 20mm pack of 10