Plastic Knockout Plugs UL Recognized Threaded Plugs

Threaded knockout plugs UA-010, UA-011, UA-012 & UA-014 from Polycase create a waterproof seal. Buy hole plugs from Polycase today.
Polycase is a premier manufacturer of electronic enclosures, dedicated to providing the best customer service in the industry. With over 65 years of continuous service to the electronics and electrical industries, we can be your trusted partner.

RS PRO, RS PRO Blanking Plug, M16, 15.7mm Hole Diameter, Nylon 66, 20mm Diameter, Threaded, 865-9748

NM902 Arlington 1 Plastic Knock Out Seal

Heyco® Nylon Liquid Tight Threaded Plugs

Versatile Dynamic 3 inch rubber plug - Alibababa.com

Threaded Plugs - MOCAP, Quality Plastic Products Manufacturer

Nylon Plastic Round Snap In Type Locking Furniture Hole Plugs

UNF Threaded Plugs, Plastic Threaded Plugs For Protection - Vital

M16 Hexagon Nylon Screw Hole Plugs Online

UNF Threaded Plugs, Plastic Threaded Plugs For Protection - Vital Parts

Sigma ProConnex 1/2-in Plastic Knockout Bushing Conduit Fittings

Plastic Threaded Protection Plugs

A Full Guide to the NEC Code for Junction Boxes