This item is a JAM NUT 1-1/8-16 UN. The brand is DESTACO and the manufacturer number is 051-112-160....View MoreThis item is a JAM NUT 1-1/8-16 UN. The brand is DESTACO and the manufacturer number is 051-112-160. Known as DESTACO 051-112-160. Windsor Factory Supply (WFS) SKU is 175051112160. View Less