NO20 Steel Spur Gear 5/16" ID just has eccentric locking insert

just has eccentric locking insert instead of set screw

SUCNPFC has nickel plated housing and stainless steel bearing insert

When used with worm gears

Material: Bronze

They are available in plastic

NO20 Steel Spur Gear 5/16" ID just has eccentric locking insertBoston Gear spur gears are designed to transmit motion and power between parallel shafts. The different styles offered include spur, gear rack, pinion wire, stem pinions, and internal gears, and most come with a selection of bore diameters, keyways, and setscrews to accommodate a wide variety of application requirements. They are available in plastic, non metallic, brass, steel, and cast iron and are manufactured in a variety of styles, including