Double Star Threaded Caster Inserts In Heat Treated Steel For 1-1/2 Inch Square Tubes 16-18 Gauge With 3/8-16 Thread Deep Setting For Secure Flush Mounting Pack Of 4 Ideal For Heavy Duty Furniture Carts Shelving And Workshop Equipment

Heavy-Duty Double Star Caster Insert for 1.5in tube
✔️ Fits 1.5in square tube, 16-18 gauge, 3/8-16 thread, 4 pack

These heat treated steel caster inserts are designed to be pressed into hollow 1.5 inch square legs (38.1 mm) with wall thickness roughly 1.2-1.6 mm, providing a deep-set, secure mounting for wheels. They sit flush with the outside edge for a clean finish and are ideal for industrial carts, workbenches, and heavy-duty furniture in workshops, garages, and commercial settings.

✅ Thread: 3/8-16
✅ Fits 1-1/2 in outside square tubing; 16-18 gauge walls (1.2-1.6 mm)
✅ Heat treated hardened steel for durability
✅ Deep-set double star design resists pull-out and keeps caster aligned

💡 What is a square tube caster insert used for in metal frames and furniture? It helps secure a wheel caster inside square legs for stable rolling. - Increases load bearing by distributing weight through the tube - Provides flush finish with tubing edge for neat appearance - Compatible with standard 3/8-16 threaded casters - Works with 16-18 gauge wall tubes (approximately 1.2-1.6 mm) to keep inserts firmly in place