UK product ID ZT1097625X. Bzpa strong, reliable and easy-to-fix low-cost anchor for wood and plastic. Simply insert into a pre-drilled hold and tap into place. Flush-fitting, no counterboring required and self-locking to prevent rotation during hand or automatic assembly. Reliable & durable castle & slotted round nuts by Qualfast, buy online at best discount price and fast shipping to the U.K.. Manufacturer part number 14110.100.001.