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.
Pins with a material certificate provide a traceable lot number and test report.
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. 416 stainless steel pins are more wear resistant than other stainless pins, but not as corrosion resistant. They are magnetic.
Some pins meet material and dimensional standards set by ASME, Mil. Spec., DIN, or ISO.
For technical drawings and 3-D models, click on a part number.
| Lg. | Dia. Tolerance | Min. Hardness | Breaking Strength, lbs. | Specifications Met | Pkg. Qty. | Pkg. | |
7/16" Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1" | 0.0001" to 0.0003" | Rockwell C47 | 32,000 | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 1 1/4" | 0.0001" to 0.0003" | Rockwell C47 | 32,000 | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 2" | 0.0001" to 0.0003" | Rockwell C47 | 32,000 | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 2 1/2" | 0.0001" to 0.0003" | Rockwell C47 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 3" | 0.0001" to 0.0003" | Rockwell C47 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 4" | 0.0001" to 0.0003" | Rockwell C47 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 00000 |
| Lg. | Dia. Tolerance | Min. Hardness | Breaking Strength, lbs. | Specifications Met | Pkg. Qty. | Pkg. | |
7/16" Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1/2" | 0.0001" to 0.0003" | Rockwell C50 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 5/8" | 0.0001" to 0.0003" | Rockwell C50 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 0000 |
| 3/4" | 0.0001" to 0.0003" | Rockwell C50 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 7/8" | 0.0001" to 0.0003" | Rockwell C50 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 1 1/8" | 0.0001" to 0.0003" | Rockwell C50 | 32,000 | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 1 3/8" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 1 1/2" | 0.0001" to 0.0003" | Rockwell C47 | 32,000 | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 1 5/8" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 1 3/4" | 0.0001" to 0.0003" | Rockwell C50 | 32,000 | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 2 1/4" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 2 3/4" | 0.0001" to 0.0003" | Rockwell C50 | Not Rated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 5" | 0.0001" to 0.0003" | Rockwell C50 | 32,000 | ASME B18.8.2 | 1 | 000000000 | 00000 |
| Lg. | Dia. Tolerance | Min. Hardness | Breaking Strength | Passivation | Pkg. Qty. | Pkg. | |
7/16" Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 5 | 000000000 | 00000 |
| 1 1/4" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 0000 |
| 1 1/2" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 0000 |
| 1 3/4" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 0000 |
| 2" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 5 | 000000000 | 00000 |
| 2 1/4" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 0000 |
| 2 1/2" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 0000 |
| 3" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 0000 |
| 4" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 00000 |
| 5" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 00000 |
| 6" | 0" to 0.0002" | Not Rated | Not Rated | Not Passivated | 1 | 000000000 | 00000 |
| Length | Dia. Tolerance | Min. Hardness | Breaking Strength, lbs. | Passivation | Specifications Met | Pkg. Qty. | Pkg. | |
Pins | ||||||||
|---|---|---|---|---|---|---|---|---|
7/16" Dia. | ||||||||
| 1" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | __ | 1 | 000000000 | 00000 |
| 1 1/4" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | __ | 1 | 000000000 | 0000 |
| 1 1/2" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | MS16555-668 | 1 | 000000000 | 0000 |
| 2" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | MS16555-670 | 1 | 000000000 | 0000 |
| 3" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | MS16555-674 | 1 | 000000000 | 00000 |
| 4" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | __ | 1 | 000000000 | 00000 |
| 5" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | __ | 1 | 000000000 | 00000 |
Pins with Material Certificate with Traceable Lot Number and Test Report | ||||||||
7/16" Dia. | ||||||||
| 1 1/2" | 0.0001" to 0.0003" | Rockwell C36 | 22,000 | Passivated | MS16555-668 | 1 | 000000000 | 00000 |
Oversized Dowel Pins
Oversized to fit worn and enlarged holes, these pins work well as repair and replacement parts. Use them as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts. The ends are chamfered for easy insertion.
Steel pins have good strength.
For technical drawings and 3-D models, click on a part number.
0.001" Dia. Oversized | |||||
|---|---|---|---|---|---|
| Lg. | Min. Hardness | Dia. Tolerance | Pkg. Qty. | Pkg. | |
Alloy Steel | |||||
7/16" Dia. | |||||
| 1" | Rockwell C60 | 0.0009" to 0.0012" | 5 | 000000000 | 000000 |
| 1 1/2" | Rockwell C60 | 0.0009" to 0.0012" | 5 | 000000000 | 00000 |
| 2" | Rockwell C60 | 0.0009" to 0.0012" | 5 | 000000000 | 00000 |
| 2 1/2" | Rockwell C60 | 0.0009" to 0.0012" | 5 | 000000000 | 00000 |
| 3" | Rockwell C60 | 0.0009" to 0.0012" | 5 | 000000000 | 00000 |
Pull-Out Dowel Pins
One end of these pins is tapped, and the other is chamfered for easy insertion. To remove, thread a screw or tool into the tapped hole, then pull the pin out. Because they aren't vented, they work best in through holes. Use them as pivots, hinges, shafts, jigs, and fixtures to locate or hold parts. Pins are precision ground for accurate alignment. Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.
Pins that meet ASME B18.8.2 specifications conform to ASME standards for material and dimensions.
Steel pins have good strength. 18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| Lg. | Dia. Tolerance | Thread Size  | Min. Hardness | Breaking Strength, lbs. | Specifications Met | Each | |
7/16" Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1" | 0.0001" to 0.0003" | 1/4"-20 | Rockwell C47 | 19,500 | ASME B18.8.2 | 000000000 | 00000 |
| 1 1/2" | 0.0001" to 0.0003" | 1/4"-20 | Rockwell C47 | 19,500 | ASME B18.8.2 | 000000000 | 0000 |
| 2" | 0.0001" to 0.0003" | 1/4"-20 | Rockwell C47 | 19,500 | ASME B18.8.2 | 000000000 | 0000 |
| Lg. | Dia. Tolerance | Thread Size | Min. Hardness | Breaking Strength | Specifications Met | Each | |
7/16" Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 1" | 0.0001" to 0.0003" | 1/4"-20 | Not Rated | Not Rated | ASME B18.8.2 | 000000000 | 000000 |
| 1 1/2" | 0.0001" to 0.0003" | 1/4"-20 | Not Rated | Not Rated | ASME B18.8.2 | 000000000 | 00000 |
| 2" | 0.0001" to 0.0003" | 1/4"-20 | Not Rated | Not Rated | ASME B18.8.2 | 000000000 | 00000 |
Use with internally threaded dowel pins. A complete tool requires a puller handle and a tip that fits your pin. You’ll also need a socket head cap screw that can thread into the pin. To use, thread a tip into the puller handle and fit the other end of the tip over the screw. Slide the weight along the handle to push or pull.
Wood Dowel Pins
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.
Copper pins cool faster than steel ones.
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.
Head | ||||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
4" Lg. | ||||||
| 7/16" | -0.0008" to -0.0005" | 11/16" | 1/4" | Rockwell C41 | 000000000 | 00000 |
6" Lg. | ||||||
| 7/16" | -0.0008" to -0.0005" | 11/16" | 1/4" | Rockwell C41 | 000000000 | 0000 |
10" Lg. | ||||||
| 7/16" | -0.0008" to -0.0005" | 11/16" | 1/4" | Rockwell C41 | 000000000 | 0000 |
14" Lg. | ||||||
| 7/16" | -0.0008" to -0.0005" | 11/16" | 1/4" | Rockwell C41 | 000000000 | 00000 |
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 | ||||||
| 7/16" | -0.0008" to -0.0005" | 11/16" | 1/4" | Rockwell C50 | 00000000 | 00000 |
Punch Pins
Use these pin blanks with a die to punch 1/8" and larger holes. Pins can be machined to fit your application. They're precision-ground to tight tolerances. Made of M2 tool steel, these pins are wear-resistant and stay sharp at high temperatures. Heads are drawn to a Rockwell hardness of C45 to prevent breakage from shock.
For technical drawings and 3-D models, click on a part number.
Head | ||||||
|---|---|---|---|---|---|---|
| Dia. | Dia. Tolerance | Dia. | Ht. | Min. Hardness | Each | |
2" Lg. | ||||||
M2 Tool Steel | ||||||
| 7/16" | 0.0002" to 0.0005" | 9/16" | 3/16" | Rockwell C60 | 000000000 | 000000 |
2 1/2" Lg. | ||||||
M2 Tool Steel | ||||||
| 7/16" | 0.0002" to 0.0005" | 9/16" | 3/16" | Rockwell C60 | 000000000 | 00000 |
3" Lg. | ||||||
M2 Tool Steel | ||||||
| 7/16" | 0.0002" to 0.0005" | 9/16" | 3/16" | Rockwell C60 | 000000000 | 00000 |
3 1/2" Lg. | ||||||
M2 Tool Steel | ||||||
| 7/16" | 0.0002" to 0.0005" | 9/16" | 3/16" | Rockwell C60 | 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 with a black-phosphate or zinc-plated finish have an outer layer to protect the steel underneath from rust.
18-8 stainless steel pins offer a balance of strength and corrosion resistance.
420 stainless steel pins are as strong and wear resistant as steel, with the addition of corrosion resistance in wet environments.
Passivated pins offer added protection against corrosion and oxidation.
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. | |
7/16" Dia. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 3/4" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 000000 |
| 2" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 2 1/2" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 3" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 4" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| Lg. | For Hole Dia. | Wall Thick. | Min. Hardness | Breaking Strength, lbs. | Passivation | Specifications Met | Pkg. Qty. | Pkg. | |
7/16" Dia. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 3/4" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 000000 |
| 2" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 2 1/2" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 3" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| 4" | 0.438"-0.445" | 0.077" | Rockwell C43 | 19,800 | Not Passivated | ASME B18.8.2 | 10 | 000000000 | 00000 |
| Lg. | For Hole Dia. | Wall Thick. | Min. Hardness | Breaking Strength, lbs. | Passivation | Specifications Met | Pkg. Qty. | Pkg. | |
7/16" Dia. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 3/4" | 0.437"-0.445" | 0.077" | Not Rated | 11,500 | Passivated | ASME B18.8.2 | 5 | 000000000 | 000000 |
| 2" | 0.437"-0.445" | 0.077" | Not Rated | 11,500 | Passivated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 2 1/2" | 0.437"-0.445" | 0.077" | Not Rated | 11,500 | Passivated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 3" | 0.437"-0.445" | 0.077" | Not Rated | 11,500 | Passivated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| 4" | 0.437"-0.445" | 0.077" | Not Rated | 11,500 | Passivated | ASME B18.8.2 | 1 | 000000000 | 0000 |
| Lg. | For Hole Dia. | Wall Thick. | Min. Hardness | Breaking Strength, lbs. | Passivation | Specifications Met | Pkg. Qty. | Pkg. | |
7/16" Dia. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 3/4" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Passivated | ASME B18.8.2 | 5 | 000000000 | 000000 |
| 2" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Passivated | ASME B18.8.2 | 5 | 000000000 | 0000 |
| 2 1/2" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Passivated | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 3" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Passivated | ASME B18.8.2 | 5 | 000000000 | 00000 |
| 4" | 0.437"-0.445" | 0.077" | Rockwell C43 | 19,800 | Passivated | ASME B18.8.2 | 1 | 000000000 | 0000 |
Hole-Alignment Pins
Line up holes by driving these pins through existing rivet, pin, and bolt holes in multiple pieces of metal. Alternatively known as lineup taper punches.
For technical drawings and 3-D models, click on a part number.
Body | ||||||||
|---|---|---|---|---|---|---|---|---|
| Point Dia. | Taper Lg. | Dia. | Overall Lg. | Shape | Texture | Material | Each | |
| 3/16" | 2 1/2" | 7/16" | 6" | Round | Smooth | Steel | 000000 | 000000 |
Double-Taper Hole-Alignment Pins
When one side of these pins wears out, use the other one. They’re also known as barrel drift pins. Use alignment pins to align structural components such as I-beams and angle iron for bolting, riveting, and welding.
For technical drawings and 3-D models, click on a part number.
Body | ||||||||
|---|---|---|---|---|---|---|---|---|
| Point Dia. | Taper Lg. | Dia. | Overall Lg. | Shape | Texture | Material | Each | |
| 3/16" | 2" | 7/16" | 6" | Round | Smooth | Steel | 000000 | 00000 |