Dowel Pins
Use dowel pins as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts. For a tight fit, your hole should be equal to or slightly smaller than the diameter shown. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.
Steel pins are the strongest dowel pins. Steel pins are precision ground except for 1/32" diameter pins. Stainless steel pins are more corrosion resistant than steel pins. Pins that are passivated offer added protection against corrosion and oxidation. Stainless steel pins are precision ground except for 1/64" diameter pins. 18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic. 316 stainless steel pins have the best corrosion resistance of our stainless steel pins. They may be mildly magnetic. 416 stainless steel pins are more wear resistant than other stainless pins, but not as corrosion resistant. They are magnetic.
For technical drawings and 3-D models, click on a part number.
| Lg. | Dia. Tolerance | Min. Hardness | Breaking Strength, lbs. | Pkg. Qty. | Pkg. | |
7/64" Dia. | ||||||
|---|---|---|---|---|---|---|
| 3/16" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 5 | 000000000 | 000000 |
| 7/32" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 5 | 000000000 | 00000 |
| 1/4" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 5 | 000000000 | 00000 |
| 5/16" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 5 | 000000000 | 00000 |
| 3/8" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 1 | 000000000 | 0000 |
| 7/16" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 5 | 000000000 | 00000 |
| 1/2" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 1 | 000000000 | 0000 |
| 5/8" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 1 | 000000000 | 0000 |
| 3/4" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 1 | 000000000 | 0000 |
| 7/8" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 5 | 000000000 | 00000 |
| 1" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 1 | 000000000 | 0000 |
| 1 1/2" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | 1 | 000000000 | 0000 |
| Lg. | Dia. Tolerance | Min. Hardness | Breaking Strength | Passivation | Pkg. Qty. | Pkg. | |
7/64" Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 000000 |
| 5/32" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/16" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/32" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1/4" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 5/16" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/16" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1/2" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 5/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/4" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1 1/2" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 1 | 000000000 | 0000 |
| Lg. | Dia. Tolerance | Min. Hardness | Breaking Strength | Passivation | Pkg. Qty. | Pkg. | |
7/64" Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 000000 |
| 5/32" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/16" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/32" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1/4" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 5/16" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/16" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1/2" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 5/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/4" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/8" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1 1/2" | 0" to 0.0002" | Not Rated | Not Rated | Passivated | 1 | 000000000 | 0000 |
Pins | |||||||
|---|---|---|---|---|---|---|---|
| Length | Dia. Tolerance | Min. Hardness | Breaking Strength, lbs. | Passivation | Pkg. Qty. | Pkg. | |
7/64" Dia. | |||||||
| 5/32" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 000000 |
| 1/4" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 5/16" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/8" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/16" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1/2" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 5/8" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 3/4" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 7/8" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
| 1 1/2" | 0.0001" to 0.0003" | Rockwell C36 | Not Rated | Passivated | 5 | 000000000 | 00000 |
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. | ||||||
| 7/64" | 0" to 0.0002" | 11/64" | 3/32" | Rockwell C60 | 000000000 | 000000 |
Head | ||||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
4" Lg. | ||||||
| 7/64" | 0" to 0.0003" | 11/64" | 3/32" | Rockwell C60 | 000000000 | 000000 |
Head | ||||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
6" Lg. | ||||||
| 7/64" | 0" to 0.0003" | 11/64" | 3/32" | Rockwell C60 | 000000000 | 000000 |
Flush-Mount Core Pins
A 60° beveled head fits into a countersunk hole. Mold plastic around these pins to form small holes, or use them to perforate parts. Also known as perforator, mold, forged, quill, and pilot pins, they can be machined to fit your application. Pins are precision-ground to tight tolerances. Made of M2 tool steel, these pins are wear-resistant and stay sharp at high temperatures.
For technical drawings and 3-D models, click on a part number.
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 | ||||||
| 7/64" | -0.0008" to -0.0005" | 1/4" | 1/8" | Rockwell C50 | 00000000 | 00000 |
Shoulder-Style Ejector Pins
A thick shoulder underneath the head makes these pins more rigid than standard ejector pins. Also known as knockout and forged pins, use them to push parts out of molds. They're precision-ground to tight tolerances and hardened for strength and wear resistance. Machining is not recommended.
Pins are made of H13 tool steel to resist rapid changes in temperature.
For technical drawings and 3-D models, click on a part number.
Head | 6" Lg. | 10" Lg. | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Shoulder Dia. | Dia. | Ht. | Min. Hardness | Each | Each | ||
Nitride-Coated H13 Tool Steel | |||||||||
1/2" Shoulder Lg. | |||||||||
| 7/64" | -0.0008" to -0.0005" | 1/8" | 1/4" | 1/8" | Rockwell C41 | 000000000 | 00000 | 000000000 | 00000 |
2" Shoulder Lg. | |||||||||
| 7/64" | -0.0008" to -0.0005" | 1/8" | 1/4" | 1/8" | Rockwell C41 | 000000000 | 0000 | 000000000 | 0000 |
3" Shoulder Lg. | |||||||||
| 7/64" | -0.0008" to -0.0005" | 1/8" | 1/4" | 1/8" | Rockwell C41 | 000000 | 00 | 000000000 | 0000 |
4" Shoulder Lg. | |||||||||
| 7/64" | -0.0008" to -0.0005" | 1/8" | 1/4" | 1/8" | Rockwell C41 | 000000 | 00 | 000000000 | 0000 |
Coiled Spring Pins
These spiral pins remain flexible after installation, so they absorb shock and vibration better than slotted spring pins. They work well in holes that are out of round. Use them for fastening, pivoting, and holding.
Squeeze pins closed and install them in a hole. Tension holds them tight against the hole wall. The chamfered ends aid insertion.
Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.
Steel pins offer good strength.
18-8 stainless steel pins resist corrosion better than 420 stainless steel pins. They may be mildly magnetic.
420 stainless steel pins resist wear as well as corrosion. They are magnetic.
Passivated pins offer added protection against corrosion and oxidation.
Inch pins meet ASME B18.8.2 specifications for material and dimensions.
For technical drawings and 3-D models, click on a part number.
| Lg. | For Hole Dia. | Min. Hardness | Breaking Strength, lbs. | Passivation | Specifications Met | Pkg. Qty. | Pkg. | |
1050-1095 Spring Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
7/64" Dia. | ||||||||
| 1/4" | 0.108"-0.112" | Rockwell C42 | 1,000 | Not Passivated | ASME B18.8.2 | 50 | 000000000 | 000000 |
| 1/2" | 0.108"-0.112" | Rockwell C42 | 1,000 | Not Passivated | ASME B18.8.2 | 50 | 000000000 | 00000 |
| 3/4" | 0.108"-0.112" | Rockwell C42 | 1,000 | Not Passivated | ASME B18.8.2 | 50 | 000000000 | 00000 |
| 1" | 0.108"-0.112" | Rockwell C42 | 1,000 | Not Passivated | ASME B18.8.2 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.108"-0.112" | Rockwell C42 | 1,000 | Not Passivated | ASME B18.8.2 | 25 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
7/64" Dia. | ||||||||
| 1/4" | 0.108"-0.112" | Not Rated | 800 | Passivated | ASME B18.8.2 | 25 | 000000000 | 00000 |
| 1/2" | 0.108"-0.112" | Not Rated | 800 | Passivated | ASME B18.8.2 | 25 | 000000000 | 00000 |
| 3/4" | 0.109"-0.112" | Not Rated | 800 | Passivated | ASME B18.8.2 | 25 | 000000000 | 00000 |
| 1" | 0.109"-0.112" | Not Rated | 800 | Passivated | ASME B18.8.2 | 25 | 000000000 | 00000 |
420 Stainless Steel | ||||||||
7/64" Dia. | ||||||||
| 1/2" | 0.108"-0.112" | Rockwell C46 | 1,000 | Passivated | ASME B18.8.2 | 25 | 000000000 | 00000 |
| 3/4" | 0.108"-0.112" | Rockwell C46 | 1,000 | Passivated | ASME B18.8.2 | 10 | 000000000 | 0000 |
| 1" | 0.108"-0.112" | Rockwell C46 | 1,000 | Passivated | ASME B18.8.2 | 10 | 000000000 | 0000 |