CT 3105-0001 — 1" emt compression coupling, zinc-plated steel. For EMT trade size 1 (OD 1.163"). UL 514B; concrete-tight. Direct cross for RACO 2924. Part No. 3105-0001 Trade size 1 in — fits OD 1.163 in Raceway EMT Material / finish Zinc-plated steel Listing UL 514B; concrete-tight Package Sold each; box quantities priced through the trade desk Cross-reference Manufacturer Part No. RACO 2924 Bridgeport 262-S class Crosses identify fittings of the same trade size, raceway, and listing class. "Class" entries are family-level — confirm the exact number on the manufacturer datasheet. Where it's used Exposed indoor runs and concrete pours Equipment subject to vibration Long pulls where coupling pull-out matters How to installTubes bottomed at the center stop, gland nuts hand-tight plus a half turn. Ream burrs first — a burr splits the ring. Guide: Rigid vs EMT Couplings. Complete the run — 1 in.Connector · Locknut · Bushing · Grounding bushing · One-hole strap · HangerStocked — same-day shipping on orders by 2 PM PT. Volume and trade pricing through the trade desk.