Big Block Ford FE 390-428 Head Stud Kit12 Point Nuts, Suit OEM and Aftermarket Cylinder Heads, 8740 Grade MaterialBrand: AEROFLOWPart Number: AF37-2019Description: Aeroflow Performance head studs greatly improve your cylinder head-to-block sealingcompatibilities. This is important in engines with highpower adders such as turbochargers, superchargers or nitrous. They can even be agreat addition to a mildly modified build as insurance against failure. All head studs provide a more accurate and consistent torque loading over traditional head bolts.
These head studs are manufactured from aircraftquality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity within thestud. Meaning these studs are rated up to 190,000 psi makingthem stronger than Grade 8 andOEM fasteners. All kits come complete with 12-point nuts and hardened washers for an even load distribution and accurate torque readings.
Additional Specifications: Kit Contains:
10 x Short Studs.
96.5mm Overall Length.
30mm Shank Length.
1/2-13" thread into Engine. 1/2-20" Nut End.
10 x Long Studs.
136.9mm Overall Length.
70.3mm Shank Length.
1/2-13" thread into Engine. 1/2-20 " Nut End.
20 x 12 Point Nuts.
1/2-20" Thread.
22.1mm Outside Diameter.
12.9mm Overal Height.
20 x Flat Washers.
22.2mm Outside Diameter. 12.8mm Inside Diameter.
3.1mm Thickness.