Brass grommet and washer manufactured to BS3102. Outside dia 28.58mm, Inside dia 14.68mm, Barrel length 10.32mm. Nickel finish also available from stock.
Matching hole cutter is 9/16" (14.2mm) 30-4-15 whilst the matching punch and die is No4RF. Standard pack sizes are 100 or 1000 units - other quantities and finishes are available on request.