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Chrome Bulge Acorn nuts, with 19mm head size,for alloy or steel wheels, choose thread required from list.
The Bulge taper style of nut is widely used now on alloy wheels,but can also be used on steel wheels that have a taper seating.
Two styles usually available main pic shows the USA version and below is a UK spec style. If you have a preference please state in special instructions section at check out, other wise we will send out the item we have in stock for your thead choice.
The 3/8ths UNF have a smaller 17mm head due to smaller thread. Picture below.
A radius seating nut is also available in the 12mm 1.5 thread, see drop down menu to order.
See wheel nut start page for thread guide.