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. The end is chamfered for easy insertion. Pins are made of zinc-plated steel for good strength and some corrosion resistance. Also known as Barb-Lok™ pins.
For technical drawings and 3-D models, click on a part number.
Core Pins
Mold plastic around these pins to form small holes, or use them to perforate parts. They have a flat head to fit into a counterbored hole. Pins can be machined to fit your application. They're precision-ground to tight tolerances.
M2 tool steel pins resist wear and stay sharp at high temperatures.
For technical drawings and 3-D models, click on a part number.
Head | ||||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
2 1/2" Lg. | ||||||
| 9/64" | 0" to 0.0002" | 13/64" | 1/8" | Rockwell C60 | 000000000 | 00000 |
Head | ||||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
4" Lg. | ||||||
| 9/64" | 0" to 0.0003" | 13/64" | 1/8" | Rockwell C60 | 000000000 | 000000 |
Head | ||||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
6" Lg. | ||||||
| 9/64" | 0" to 0.0003" | 13/64" | 1/8" | Rockwell C60 | 000000000 | 000000 |
Ejector Pins
Also known as knockout and forged pins, use these pins to push parts out of molds. Pins are precision-ground to tight tolerances and hardened for strength and wear resistance. Machining is not recommended.
H13 tool steel pins resist rapid changes in temperature.
For technical drawings and 3-D models, click on a part number.
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. However, they cannot be drilled or tapped and are more brittle than standard ejector pins. They're also known as knockout and forged pins. Made of H13 tool steel, they resist rapid changes in temperature. They’re precision ground to tight tolerances.
For technical drawings and 3-D models, click on a part number.
Head | 6" Lg. | |||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
Nitride-Coated H13 Tool Steel | ||||||
| 9/64" | -0.0008" to -0.0005" | 1/4" | 1/8" | Rockwell C50 | 00000000 | 00000 |
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, they’re used to push parts out of molds. These pins are H13 tool steel, so they resist rapid changes in temperature. They’re hardened for strength and wear resistance and precision ground to tight tolerances. Machining is not recommended.
For technical drawings and 3-D models, click on a part number.
Head | 10" Lg. | |||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
Nitride-Coated H13 Tool Steel | ||||||
| 9/64" | 0.0042" to 0.0045" | 1/4" | 1/8" | Rockwell C41 | 000000000 | 00000 |
Slotted Spring Pins
Also known as roll, tension, split, and expansion pins, these pins have a slot along one side that you squeeze closed to install them into unthreaded holes. Once installed, they expand slightly, creating outward tension that holds them tight against the hole wall. These pins absorb shock and vibration in your system, and keep parts from loosening. They are often used as hinge pins, or to hold springs and power transmission components in place.
Install these pins into a hole. They have at least one chamfered end, which means the end is angled to make insertion easier.
Breaking strength is measured as double shear, which is the amount of force required to break a pin into three pieces.
Steel pins are strong and wear resistant.
Pins that meet ASME B18.8.2 specifications are made to ASME standards for material and dimensions.
For technical drawings and 3-D models, click on a part number.
| Lg. | For Hole Dia. | Wall Thick. | Min. Hardness | Breaking Strength, lbs. | Passivation | Specifications Met | Pkg. Qty. | Pkg. | |
9/64" Dia. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 1/2" | 0.14"-0.144" | 0.028" | Rockwell C43 | 1,875 | Not Passivated | ASME B18.8.2 | 50 | 000000000 | 000000 |