This is a JIC closing plug with an external hexagon. Zinc-coated steel fittings provide some corrosion resistance, but are not meant for corrosive environments.
Specifications
Thread : UNF 7/16-20
Dash Size : 4
Connection type : Outer thread JIC
Material : Steel
Max pressure at 20 °C (bar) : 310
Material connection 1 : Steel
Surface protection connection 1 : Galvanic zink plated
![JIC Plug UNF 7/16''-20 (Dash Size 4) Steel 310bar (4355.5psi) [5 Pieces]](https://www.coolgrittools.com/wp-content/uploads/2026/06/f2eez_00.ba9f8325.webp)




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