NKK Switches - AT504M - Accessory,Hardware,Metric Knurled Face Nut,Brass W/Chrome,Series M,P,S,SB,WB,WT - Allied Electronics & Automation, part of RS Group
NKK Switches - AT527M - Accessory,Hardware,Metric Hex Mounting Nut,Steel,Series M,P,S,SB,SCB,SK,TL - RS