This is for 5 x brass nuts suitable for inlet and exhaust manifolds on various classic cars. These are 3/8" UNF.
10 X BRASS MANIFOLD EXHAUST M10 NUTS 10MM NUT 1.25 BN9
MGB Roadster/ MGB GT/ Midget Brass Manifold Nut set - GHF261K
OEQ Intake Inlet Manifold & Swirl Flaps BMW 1 2 3 4 5 X Series N47 11617807991
Intake Inlet Manifold & Swirl Flaps For BMW 1 2 3 4 5 X Series N47 11617807991
Intake Inlet Manifold + Swirl Flaps Fits BMW 1 2 3 4 5 X Series N47 11617807991