EPChunMi Rocker Arm Nut For 7/16"-20 in Thread Steel Black Oxide Poly Lock (16)

Elgin Engine Rocker Arm Nut RM-8829S; 7/16-20 .600 in. Poly Lock, 16pcs

Crower 86050S-16 Rocker Arm Polylock Nuts Short Design 7/16"-20 Thread Set of 16

ARP Rocker Arm Nut Set 300-8245; Perma Loc 7/16 in. x .550 in. Poly Lock, 16pcs

Elgin RM8829S Rocker Arm Poly Lock Nut Set For 7/16" Studs .600" x 1.125"

5/16" Polylock Rocker Arm Nut Set

Jomar Engine Rocker Arm Nut 1414; 7/16-20 .600 in. Stud Girdle Adjustment Nut

Harland Sharp POLYLOCKS 7/16 .550 BASE