SharkBite U004LF Coupling, 1/4-in (3/8-in OD) Tubing Fitting

SharkBite U004LF Coupling, 1/4-in (3/8-in OD)

The SharkBite U004LF is a 1/4-in (3/8-in OD) coupling built for straight, in-line tubing-to-tubing connections in rough-in plumbing work. This fitting is sized to join two lengths of 3/8-in OD tubing where a permanent, straight run needs to be extended or repaired without disturbing the surrounding wall or floor cavity. Sold in a carton quantity of 6 ea, the U004LF is a job-ready pack for plumbers and contractors who need multiple small-diameter couplings on hand for service calls, remodel work, or new installation runs. As with all SharkBite branded fittings, the U004LF is manufactured to work within SharkBite's tubing and fitting system, giving installers a consistent, matched-diameter connection point for 1/4-in nominal, 3/8-in OD lines.

Key Features

• Trade Size: Sized for 1/4-in nominal (3/8-in OD) tubing, matching common small-diameter supply and branch lines.
• Straight Coupling Configuration: Joins two sections of 3/8-in OD tubing in a single in-line connection, useful for extending runs or splicing in repairs.
• Job-Pack Quantity: Packaged 6 ea per carton, giving installers enough fittings on-hand for multiple connections across a job without repeat trips to the supply house.
• Behind-the-Wall Rough-In Use: Designed for use in concealed or accessible rough-in tubing runs where a compact, reliable coupling is needed.
• SharkBite System Compatibility: Built to the SharkBite fitting platform, so it pairs with SharkBite tubing and related small-diameter fittings for a matched system.

Technical Specifications

• Model: U004LF
• Size: 1/4-in (3/8-in OD)
• Packaging: 6 ea
• Type: Coupling

Typical Applications

• Residential and Commercial Rough-In Plumbing
• Extending or Repairing Small-Diameter Tubing Runs
• Service and Repair Calls Requiring In-Line Couplings
• New Construction Tubing Layouts
• Renovation Projects Involving Concealed Tubing Runs

Why SharkBite?

SharkBite fittings are a familiar standard on plumbing trucks and in rough-in supply houses, and the U004LF coupling extends that same fitting platform down to 1/4-in (3/8-in OD) tubing connections. Buying the 6 ea carton keeps a working supply of small-diameter couplings on hand for the jobs where a quick, matched-size splice or extension is needed. Shop SharkBite plumbing fittings at ZenSupply for consistent, job-ready rough-in supply.