Three Inch Casters With 5/16-18 UNC Threaded Stem Two Casters With Brake Lock And Three Without Locking Bearing Swivel Casters With Screw In Inserts Safe For All Floor Surfaces Imperial Stem Size 5/16 Inch 18 TPI Not For Metric M8 Sockets

3-inch caster set, 5-pack, with 5/16-18 UNC stems, brakes
✔️ 2 brake casters + 3 standard; 650 lb cap; 0.79" stem length (20 mm)

These 3-inch swivel casters use imperial 5/16-18 UNC threaded stems and come in a 5-pack with 2 brake-enabled units and 3 non-brake units. Built for mobile furniture, carts, and shop equipment, they roll smoothly on wood, concrete, and tile floors while protecting sensitive surfaces.

✅ Wheel diameter 3 inches (76 mm), polyurethane tread for smooth rolling
✅ Stem size 5/16-18 UNC, length 0.79 inch (20 mm) for secure mounting
✅ 2 brake-enabled casters; 3 standard casters included
✅ Heavy-duty steel housing with precision bearings; 650 lb capacity per 5-pack
✅ Quiet, floor-friendly operation; suited for all floor types

💡 What is a 5/16-18 UNC threaded stem caster used for in workshop mobility and furniture upgrades?

These handy casters are great for giving movable capability to heavy carts, chairs, and workbenches in garages and shops. - handy for moving heavy carts around a shop - brake-enabled units help lock wheels when needed - polyurethane wheels protect floors and resist debris buildup