Point-Seven-five
Life time member
Number of posts : 4223
You can get the top nuts at any shop that services small engines. They usually have a bucket of old plugs that you can take the nuts off. Those nuts never wear out so you can swap them from the old plug to the new one.
I don't know why NGK doesn't include those nuts with the spark plugs. I was able to get a bag of a dozen nuts by emailing NGK Technical service and explaining that the plugs I bought didn't have nuts and the BMW wires didn't work without them. I told the tech that I had been using NGK for nearly 50 years and didn't really want to change brands just because they didn't have those nuts.
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Present: 1991 K100RS "Moby Brick Too"
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175