Leader Pins | McMaster-Carr

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Aluminum Bronze

Grade 2 Titanium

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Expanding Diameter

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Spring-Loaded Ball

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Adjustable Length

Chemical Resistant

Corrosion Resistant

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DFARS Specialty Metals

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Compliant with Exemptions

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Stainless Steel

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Stainless Steel

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Body Material

Stainless Steel

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10,799 Products

Fabricating and Machining

Ejector Pins

Push finished parts out of molds

Core Pins

Add to molds and pour in plastic to form holes in finished parts

Alignment Locks

Alignment Locks

Precisely align your mold halves

Ejector Sleeves

Ejector Sleeves

Use with mold pins to form holes, bosses, and other features in parts

Ejector Blades

Flat end pushes thin-walled parts out of molds better than ejector pins

Locating Pins

Install in fixturing plates or tables to position and secure workpieces

Locating and Support Buttons

Locating and Support Buttons

Secure and position workpieces and fixtures from the bottom or side

Slotted Bushings

Slotted Bushings

Pair with a standard bushing to prevent alignment pins from binding in your fixture

Spring Stops

Push back against workpieces to hold them in place against stops and rails

Index Plungers

Align parts that have mating bushings for more precision than standard spring plungers

Spring Locating Pins

Spring Locating Pins

Apply side force to workpieces to clamp them in place

Spring Locating Pin Installation Tools

Spring Locating Pin Installation Tools

Hold spring locating pins in place for installation

Punch Pins

Use with press dies to punch 1/8" and larger holes; modify to fit your application

Fastening and Joining

Dowel Pins

Align parts before assembly or use as a pivot, shaft, or hinge to join moving components

Captive Pins

Press into holes in thin materials like panels and circuit boards to permanently join or align them

Taper Pins

Fit snugly into tapered holes to secure, position, and align components

Quick-Release Pins

Quick-Release Pins

Fasten or remove components on equipment with a spring-loaded retaining ball

Weld Pins

Weld in place for greater rigidity and strength than other pins

Shear Pins

Use with shear hubs to break at a specific torque and safeguard machinery from overloads

Dowel Pin Stock

Dowel Pin Stock

Cut to the length you need for positioning and holding parts in place

Spring Plungers

Spring Plungers

Apply accurate, consistent pressure for positioning, indexing, and ejecting parts

Spring Plunger Mounts

Spring Plunger Mounts

Secure ball-nose and long-nose spring plungers to fixture surfaces

Spring Plunger Catches

Spring Plunger Catches

Act as a stop for positioning ball-nose and long-nose spring plungers

Spring Plunger Drivers

Spring Plunger Drivers

Install spring plungers from the nose end without depressing the nose

Measuring and Inspecting

Coordinate Measuring Machine Plates and Fixtures

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

Threaded Hole Location Gauges

Threaded Hole Location Gauges

Pinpoint the true center of threaded holes to precisely align and measure parts

Alignment Pins

Line up holes in sheet metal, I-beams, and angle irons for bolting, riveting, and welding

Pipe Flange Aligners

Pipe Flange Aligners

Line up flange holes so they bolt securely and connections won’t leak

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)