This listing is for a brand new set of 16 rocker arm poly lock nuts from Elgin for 7/16" rocker studs. Set comes with 16 poly lock nuts with allen screws.

They can be used on many Chevy, Ford and Pontiac V8 engines with stainless steel rocker arms and 7/16"-20  rocker arm studs.

Part Details:

• Brand: Elgin
• Part Number: RM8829S
• Thread Size: 7/16"-20 Fine Thread
• Outside Diameter: 0.600" with a 0.550" undercut
• Length: 1.125"
• Wrench Size: 5/8"