Double Star Threaded Caster Insert In Heat Treated Steel For 3/4 Inch Square 16-18 Gauge Tubing With Deep Setting 5/16-18 Thread Flush Fitting For Clean Look And Secure Leg Or Post Mounts 4 Pack

Double Star Threaded Caster Insert for 3/4" Tubing
✔️ Heat-treated steel, fits 3/4 inch square tube, 5/16-18 thread, 4-PK

These heat-treated, double-star threaded caster inserts are designed to be embedded into 3/4 inch square legs or posts, providing a secure, flush mounting point for standard casters in furniture, carts, workstations, or industrial equipment.

✅ Thread: 5/16-18
✅ Material: heat-treated hardened steel
✅ Fit: 3/4 in (19.05 mm) square tube outside dimension, 16-18 ga (1.0-1.3 mm) walls
✅ Design: double star, deep seating for security
✅ Finish: edges flush with tubing for clean look
✅ Pack: 4-pack

💡 What is a square tube caster insert used for and how does its double-star design keep them in place?

This handy explanation covers how these inserts anchor casters inside square tubes for a secure, flush mount.

- square tubing mounting for casters - double star grip prevents pull-out - 5/16-18 thread compatibility - heat-treated steel durability