Description: This listing is for (5) 5/40 thread 7/16 inch outside diameter brass thumb screws.  These are old style thumb nuts with that nice vintage look.  They will fit lots of early plugs and other terminals and connections. They fit the Early Champion Spark Plugs. Thread is 5/40.  We now stock many types of thumb nuts and in both standard and metric thread.  Discounts given on larger quantities. 

Questions call  Thanks, Flywheel Supply