This is a Grade 5 Titanium Nuts or Bolts Package for various brands for your K Series fuel rail.
The Flanged nuts fit stock manifolds and the allen head bolts fit all aftermarket fuel rails
Flush mount rails Like Hybrid Racing, Golden Eagle Fuel Rails take the nuts for studs or 10mm length bolts
K Tuned, SpeedFactory Fuel Rails takes 20mm length bolts
Radium, Skunk2 Fuel Rails take 25mm length bolts
Allen Head:
6mm
Thread Pitch:
M8X1.25
Material:
Ti 6Al-4V