Klein Tools Pump Pliers D502-6 6 1/2 Inch Tongue And Groove Quick Adjust Rivet 0.875 Jaw Yellow Handle Fastener Tool For Tight Plumbers Pipes

High Leverage Forged Steel Tongue and Groove Pump Pliers with Quick Adjust Rivet for Secure Pipe Grip

The Klein Tools D502-6 6-1/2-Inch Tongue and Groove Pump Pliers deliver a commercial-grade plumbing and electrical solution engineered to execute rapid multi-size adjustments and secure slip-free torque on fasteners and conduit. Forged in the USA from custom high-strength steel, this compact tool features an innovative Quick-Adjust Rivet that permits fast one-handed positioning across five precision-machined jaw settings up to a maximum 0.875-inch capacity. The robust tongue and groove layout mechanically locks under heavy pressure to eliminate rotational slipping, while the aggressive induction-hardened jaw teeth bite firmly into structural metal pipes and fittings without rounding hardware corners. Fitted with signature yellow plastic-dipped handles, this pocket-sized hand tool maximizes mechanical leverage and tactile user control within highly restricted architectural spaces.

Best Used For:

• Narrow Conduit Fitting: Gripping, turning, and anchoring electrical metal tubing (EMT) or plastic conduits inside crowded utility enclosures.
• Plumbing Pipe Adjustments: Securing copper lines, brass adapters, and small diameter commercial water pipe threads during rough-in installations.
• Rusted Fastener Turning: Loosening painted or seized hex nuts, plumbing fittings, and bolts where variable jaw dimensions are necessary.

Key Performance & Safety Features

• Quick-Adjust Pivot Rivet: Advanced mechanical layout supports seamless one-handed adjustments to accelerate workflow transitions on the jobsite.
• Tongue and Groove Interlock: Milled alignment tracking rails form a rigid internal joint lock that completely blocks tracking slips under maximum load.
• Induction Hardened Teeth: Deeply cut geometric teeth maintain long-term bite retention and resist structural dulling against hard pipes.
• Five Position Machine Jaws: Parallel opening paths index cleanly into five distinct sizing steps to provide an exact fit up to 0.875 inches.
• Plastic-Dipped Handles: Industrial yellow vinyl dipping prevents handle sliding while protecting the user from friction fatigue under repetitive torque.

What's Included

• (1) 6-1/2 In. Pump Pliers (D502-6)

Technical Specifications

Pro-Tip: When tightening pipes or conduit fittings, align the jaws so that the upper handle is pulled toward you during the rotation. This utilizes the natural leverage design of the tongue and groove channels to pull the jaws more tightly together, preventing hand slips and hardware flattening.