Connector Blocks | McMaster-Carr

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1,012 Products

Electrical

Terminal Blocks

Mate with terminals to complete circuits in control panels, motors, and small machines

394 products

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

47 products

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

31 products

Grounding Bars

Create a convenient central grounding point by connecting multiple ground wires

14 products

Grounding Blocks

In cabinets and other tight spaces, ground multiple wires at one convenient spot

8 products

Telephone Wiring Blocks

Keep telephone cable organized and accessible

1 product

Material Handling

Conveyor Guide Cross Blocks

Join conveyor guide mounting rods at different angles

46 products

Fabricating and Machining

Setup Blocks

Use as mounting bases and supports to ensure accurate angles and spacing

6 products

Alignment Locks

Precisely align your mold halves

25 products

Milling Machine Collet Blocks

Hold workpieces to machine parallel or square edges and drill crossholes

2 products

Heating Blocks for 3D Printer Extruder Heating Elements

Disperse heat to melt filaments evenly as they pass through extruders

3 products

Fluid Handling

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

77 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

26 products

Measuring and Inspecting

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Lubricating

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

3 products

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

9 products