Precision Pins | McMaster-Carr

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6,522 Products

Pins

Dowel Pins

Use these metal dowel pins as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts.

Plastic Dowel Pins

Plastic pins are a nonconductive and nonmagnetic alternative to metal dowel pins. Use them as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts.

Undersized Dowel Pins

Slip these pins in and out during maintenance or prototyping—they’re undersized to make alignment easier.

Dowel Pin Stock

Cut this 12" stock to the length you need.

Oversized Dowel Pins

Oversized to fit worn and enlarged holes, these pins work well as repair and replacement parts.

Pull-Out Dowel Pins

To remove these pins, thread a screw or tool into the tapped hole, then pull them out.

Flat-Vent Pull-Out Dowel Pins

The flat side of these pins relieves trapped air, making them easier to insert in and remove from blind holes. To remove, thread a screw or tool into the tapped hole, then pull the pin out.

Spiral-Vent Pull-Out Dowel Pins

A spiral groove cut into these pins relieves trapped air but stays in 360° contact with the hole for a secure fit that's easy to insert in and remove from blind holes. To remove, thread a screw or tool into the tapped hole, then pull the pin out.

Round Head Full-Groove Dowel Pins

Grooves hold these pins in place, and a round head gives them a finished appearance.

Center-Groove Dowel Pins

Center-groove pins are often used in place of clevis pins or to create T-handles. The grooved center locks pins in position, while the smooth ends act as a pivot. Also known as type E pins.

Half-Groove Dowel Pins

These pins make good hinges or pivots. The grooved half locks pins in position, while the smooth half can act as a pivot. Also known as type H pins.

Full-Groove Dowel Pins

Grooves run the full length of these pins for a firm hold that won't spin. Use them in place of standard dowel, spring, and taper pins to fasten parts. Also known as type A pins.

Half-Groove Dowel Pins with Notch

These pins are commonly used as anchors for tension springs. The grooved half locks pins in position, and spring ends fit in to the notch. Also known as type G pins.

Quarter-Groove Dowel Pins

Quarter-groove pins are well suited for hinges or pivots. The grooved end locks pins in position, while the smooth portion can act as a pivot. Also known as type C pins.

Half-Knurled Dowel Pins

Use these as pivot or hinge pins. The knurled half locks pins in position, while the smooth half acts as a pivot.

Knurled Dowel Pins

The full length of these pins is knurled for a tight grip that won't spin.

Center-Knurled Dowel Pins

Center-knurled pins are often used in place of clevis pins or to create T-handles. The knurled center locks pins in position, while the smooth ends act as a pivot.

Wood Dowel Pins

Join two pieces of wood with these dowel pins. When glued, they expand for a tight fit.

Two-Way Barbed Dowel Pins

Use these pins to fasten components made of soft materials such as plastic or aluminum. Opposing barbs bite into each piece, pulling them together for a tight, secure fit.

Round Head Barbed Dowel Pins

Barbs bite into plastics and soft metals such as aluminum for a strong hold, and a round head gives a finished appearance.

Pins for Shear Hubs

For use with Browning shear hubs, these pins are designed to fail at specific loads to protect heavy duty machinery from torque overload.

Hollow Dowel Pins

Pass wires and other components through these hollow pins.

Core Pins

These pins have a flat head to fit into a counterbored hole.

Flush-Mount Core Pins

A 60° beveled head fits into a countersunk hole.

Ejector Pins

Push parts out of molds with these hardened pins. Also known as knockout and forged pins.

Through-Hardened Ejector Pins

Compared to standard ejector pins, these pins are less likely to chip and crack when used to push steel parts out of molds because they've been hardened through their core. Also known as knockout and forged pins.

Shoulder-Style Ejector Pins

A thick shoulder makes these pins more rigid than standard ejector pins.

Oversized Ejector Pins

To fit in holes that have widened from wear and are too big for standard ejector pins, these pins are oversized. Also known as knockout and forged pins.

Punch Pins

Use these pins with a die to punch 1/8" and larger holes. Pins can be modified to fit your application.

Ejector Blades

The flat end of these ejector blades makes them better suited to push thin-walled parts out of molds compared to ejector pins.

Precision Clevis Pins

These pins combine the locking capabilities of a clevis pin with the precision diameter of a dowel pin for a tight fit.

Captive Pins

Position, pivot, and align components. Also known as pilot pins and PEM® TP4, TPS, and MPP pins.

Captive Fastening Pins

Often used in cell phones and laptops, these pins attach thin panels such as printed circuit boards to metal and plastic bases. Also known as PEM® TA and T4 TackPins.

Captive Fastening Pins for Soft Materials

The grooves in these pins grip plastics and other soft materials. Press them in to hold panels together. Also known as PEM® TKA and TK4 TackSert pins.

Taper Pins

To remove these pins, hit the small end with a punch to drive the pin out.

Threaded Taper Pins

Threads on these pins stick out for easy removal from blind holes. Tighten the hex nut to draw the pin out.

Tapped Taper Pins

These internally threaded pins sit flush in an assembly. For easy removal from a blind hole, thread a screw into the pin and pull out.

Through-Hole Weld-On Pins

Pass these pins through a mounting hole and weld the head to the surface.

Surface-Mount Weld-On Pins

Weld these pins directly to a surface —no mounting hole required.

Dowel Pin Assortments

Dowel pins are commonly used as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts. They're slightly oversized for a tight fit.