[D1] 3rd Piece of crankcase nuts 12mm M8 ATF Porsche 912 356 Exhaust to Head 

This is a set of 6  x 12mm ATF Nuts (ATF stands for - Across The Flats, in other words it fits a 12mm Spanner/Wrench, instead of the usual 13mm for a normal m8 nut). 

These are the exact same thread (m8 x 1.25) as a normal m8 nut (not fine) except they have a reduced width (12mm) to be used where access is tight such as the following on Classic Porsche
  • 356 & 912 - 3rd piece of case, exhaust to head, carb to manifold,etc
  • 911 - carbs to manifold, heat exchangers, etc
Very Good Quality, Made in Germany. 

NO Extra postage if you buy additional sets of nuts, and bulk options (100+) available in our eBay shop (just have a look)