Mr. Gasket Sure-Lock Rocker Arm Nuts - For Aluminum Rocker Arms - Fits SB Chevy 283-400 , Pontiac V-8 , Ford 289/302/351 (Except 351C) - Gold Tone Finished Nuts Have 3/8" Stud and .540" Shank O.D. Bump Steer Gauge Case 1/8" NPT male thread

1/8" NPT male thread

Various Ford Applications 2011-14

90-93 D50/D60 front axle

Double 45 Degree Seat

Mr. Gasket Sure-Lock Rocker Arm Nuts - For Aluminum Rocker Arms - Fits SB Chevy 283-400 , Pontiac V-8 , Ford 289/302/351 (Except 351C) - Gold Tone Finished Nuts Have 3/8" Stud and .540" Shank O.D. Bump Steer Gauge Case 1/8" NPT male threadDesigned to keep the rocker arms positively locked for precise and critical valvetrain adjustments. Manufactured from quality grade steel, then heat treated for extra strength and plated with a durable finish. Kits include 16 rocker arm nuts with socket head set screws and one hex key wrench. Fits Chevrolet 283 400 SB, Pontiac V8 & Ford 289 302 351 (ex 351C). Gold tone finish. Vehicle Applications: 1971 1971 Mercury Monterey 1961 1974 Chevrolet K10