Kits come complete with appropriate number of studs, hardened and parallel ground washers, and aerospace quality nuts. Rated 190,000psi tensile strength.

Optional Features:

12-Point Nuts - With a reduced wrenching diameter, these nuts allow the use of larger diameter valve springs which eliminates the need for valve train removal to facilitate cylinder head retorquing.
Undercut Studs - It is preferable to make a stud or bolt as flexible as possible. If a stud or bolt is very stiff and does not stretch much, the amount of set in the gasket will reduce the effectiveness of that stretch. This becomes very critical as the length of the bolts or studs becomes shorter. Very short fasteners are also very stiff, and the amount of stretch present is about the same as the amount of compression in the gasket. If the gasket loses some of its compression due to set, it can eliminate the preload in the fastener and unload the gasket, resulting in a blown head gasket.. Undercutting the fastener provides the extra stretch critical to retain proper gasket seal.

12-Point Nuts

12-Point Nuts

12-Point Nuts

12-Point Nuts

12-Point Nuts

12-Point Nuts

12-Point Nuts

12-Point Nuts

12-Point Nuts

12-Point Nuts