Face Material Face Material |
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Maximum Spring Force Maximum Spring Force |
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Head Material Head Material |
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Mount Type Mount Type |
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Face Shape Face Shape |
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Minimum Spring Force Minimum Spring Force |
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Body Length Body Length |
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Head Length Head Length |
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Base Shape Base Shape |
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Maximum Head Movement Maximum Head Movement |
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As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping. Press into a drilled hole using the installation tool (sold separately). Also known as spring locating pins and side-thrust pins.
Plastic-head pins won't mar soft metal and polished surfaces.
For technical drawings and 3-D models, click on a part number.
Guide Pins | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Body | Head | Installation Tools | ||||||||||
Dia. | Lg. | Dia. | Lg. | Max. Head Movement | Min. Spring Force, lbs. | Max. Spring Force, lbs. | Body Dia. Tolerance | Body Material | Each | Each | ||
Zinc-Plated Steel Head | ||||||||||||
0.25" | 0.28" | 0.12" | 0.16" | 0.04" | 2.3 | 2.5 | 0" to 0.0009" | Aluminum | 0000000 | 00000 | 0000000 | 000000 |
0.25" | 0.28" | 0.12" | 0.16" | 0.04" | 4.5 | 5 | 0" to 0.0009" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.25" | 0.28" | 0.12" | 0.16" | 0.04" | Not Rated | 9 | -0.002" to 0.002" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.43" | 0.2" | 0.24" | 0.06" | 4.5 | 5 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.43" | 0.2" | 0.24" | 0.06" | 11.3 | 12.4 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.43" | 0.2" | 0.26" | 0.06" | Not Rated | 21.5 | -0.002" to 0.002" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.43" | 0.24" | 0.42" | 0.08" | Not Rated | 22.5 | -0.002" to 0.002" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.43" | 0.24" | 0.43" | 0.08" | 9 | 9.9 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.43" | 0.24" | 0.43" | 0.08" | 16.9 | 18.6 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.5" | 0.51" | 0.31" | 0.53" | 0.1" | 11.3 | 12.4 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.5" | 0.51" | 0.31" | 0.53" | 0.1" | 22.5 | 24.8 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.5" | 0.53" | 0.31" | 0.54" | 0.09" | Not Rated | 34 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.63" | 0.67" | 0.39" | 0.64" | 0.13" | 22.5 | 24.8 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.63" | 0.67" | 0.39" | 0.64" | 0.13" | 45 | 49.5 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.63" | 0.67" | 0.39" | 0.66" | 0.12" | Not Rated | 34 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
Acetal Plastic Head | ||||||||||||
0.25" | 0.28" | 0.12" | 0.16" | 0.04" | 2.3 | 2.5 | 0" to 0.0009" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.38" | 0.24" | 0.41" | 0.08" | 13.5 | 14.8 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.44" | 0.43" | 0.24" | 0.43" | 0.08" | 9 | 9.9 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.5" | 0.51" | 0.31" | 0.53" | 0.1" | 11.3 | 12.4 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.63" | 0.67" | 0.39" | 0.64" | 0.13" | 22.5 | 24.8 | 0" to 0.0011" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
Guide Pins | ||||||||||||
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Body | Head | Installation Tools | ||||||||||
Dia., mm | Lg., mm | Dia., mm | Lg., mm | Max. Head Movement, mm | Min. Spring Force, lbs. | Max. Spring Force, lbs. | Body Dia. Tolerance, mm | Body Material | Each | Each | ||
Zinc-Plated Steel Head | ||||||||||||
6 | 7 | 3 | 4 | 1 | 2.3 | 2.5 | 0 to 0.0221 | Aluminum | 0000000 | 00000 | 0000000 | 000000 |
6 | 7 | 3 | 4 | 1 | 4.5 | 5 | 0 to 0.0221 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
6 | 7 | 3 | 4 | 1 | 9 | 9.9 | 0 to 0.0221 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 5 | 6.7 | 1.6 | 4.5 | 5 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 5 | 6.7 | 1.6 | 11.3 | 12.4 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 5 | 6.7 | 1.6 | 22.5 | 24.8 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 6 | 10.7 | 2 | 9 | 9.9 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 6 | 10.7 | 2 | 16.9 | 18.6 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 6 | 10.7 | 2 | 33.8 | 37.1 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
12 | 13 | 8 | 13.6 | 2.6 | Not Rated | 33 | -0.01 to 0.01 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
12 | 13 | 8 | 13.9 | 2.6 | 11.3 | 12.4 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
12 | 13 | 8 | 13.9 | 2.6 | 22.5 | 24.8 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
16 | 17 | 10 | 16.7 | 3.2 | 22.5 | 24.8 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
16 | 17 | 10 | 16.7 | 3.2 | Not Rated | 33 | -0.01 to 0.01 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
16 | 17 | 10 | 16.7 | 3.2 | 67.5 | 74.3 | 0 to 0.0269 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
Acetal Plastic Head | ||||||||||||
6 | 7 | 3 | 4 | 1 | 2.3 | 2.5 | 0 to 0.022 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 5 | 6.7 | 1.6 | 4.5 | 5 | 0 to 0.027 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
10 | 11 | 6 | 10.7 | 2 | 9 | 9.9 | 0 to 0.027 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
12 | 13 | 8 | 13.9 | 2.6 | 11.3 | 12.4 | 0 to 0.027 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
16 | 17 | 10 | 16.7 | 3.2 | 22.5 | 24.8 | 0 to 0.027 | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
Sealed at the top to prevent debris from getting inside and making them seize up, these guide pins are a good choice for machining fixtures. As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping. Press into a drilled hole using the installation tool (sold separately).
Guide Pins | |||||||||||
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Body | Head | Installation Tools | |||||||||
Dia. | Lg. | Dia. | Lg. | Max. Head Movement | Max. Spring Force, lbs. | Body Dia. Tolerance | Body Material | Each | Each | ||
Stainless Steel Head | |||||||||||
0.25" | 0.3" | 0.12" | 0.15" | 0.02" | 4.4 | -0.0004" to 0.0004" | Aluminum | 0000000 | 00000 | 0000000 | 000000 |
0.44" | 0.37" | 0.24" | 0.41" | 0.04" | 6.7 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.5" | 0.55" | 0.31" | 0.52" | 0.05" | 11.1 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
0.63" | 0.68" | 0.39" | 0.68" | 0.06" | 18 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 | 0000000 | 00000 |
Guide Pins | |||||||||||
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Body | Head | Installation Tools | |||||||||
Dia., mm | Lg., mm | Dia., mm | Lg., mm | Max. Head Movement, mm | Max. Spring Force, lbs. | Body Dia. Tolerance, mm | Body Material | Each | Each | ||
Stainless Steel Head | |||||||||||
6 | 7 | 3 | 3.7 | 0.4 | 4.5 | -0.15 to 0.15 | Plastic | 0000000 | 00000 | 0000000 | 000000 |
8 | 9 | 4 | 5.2 | 0.6 | 6.5 | -0.15 to 0.15 | Plastic | 0000000 | 0000 | 0000000 | 00000 |
10 | 9 | 6 | 10.3 | 1 | 6.5 | -0.15 to 0.15 | Plastic | 0000000 | 0000 | 0000000 | 00000 |
12 | 13 | 8 | 13.3 | 1.2 | 11 | -0.25 to 0.25 | Plastic | 0000000 | 0000 | 0000000 | 00000 |
16 | 16 | 10 | 16.9 | 1.6 | 18 | -0.15 to 0.15 | Plastic | 0000000 | 0000 | 0000000 | 00000 |
Use these tools for easier guide pin installation.
Tools for press-fit pins slip over the head of the pin to let you press or hammer it into place.
Tools for threaded pins slot into notches on the side of the pin body to help you twist it into place.
Thread in a screw, handle, or other part to create the right size and shape guide pin for your application. As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping. Press into a drilled hole using the installation tool (sold separately).
Body | |||||||
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Thread Size | Dia. | Lg. | Max. Spring Force, lbs. | Body Dia. Tolerance | Body Material | Each | |
8-32 | 0.44" | 0.43" | 4.5 | -0.002" to 0.002" | Aluminum | 0000000 | 00000 |
8-32 | 0.44" | 0.43" | 9 | -0.002" to 0.002" | Aluminum | 0000000 | 0000 |
8-32 | 0.44" | 0.43" | 16.9 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 |
1/4"-20 | 0.63" | 0.67" | 22.5 | -0.002" to 0.002" | Aluminum | 0000000 | 0000 |
1/4"-20 | 0.63" | 0.67" | 34 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 |
1/4"-20 | 0.63" | 0.67" | 45 | -0.0004" to 0.0004" | Aluminum | 0000000 | 0000 |
Threading makes these guide pins easier to remove and replace than press fit, so they're useful for high-wear applications. A sealed top prevents debris from getting inside and making them seize up. As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping.
Guide Pins | |||||||||||||
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Thread | Body | Head | Installation Tools | ||||||||||
Size | Pitch, mm | Dia., mm | Lg., mm | Dia., mm | Lg., mm | Max. Head Movement, mm | Max. Spring Force, lbs. | Body Dia. Tolerance, mm | Body Material | Each | Each | ||
Zinc-Plated Steel Head | |||||||||||||
M12 | 1.75 | 5 | 11.5 | 5 | 6 | 0.8 | 22 | -0.15 to 0.15 | Steel | 0000000 | 00000 | 0000000 | 000000 |
M12 | 1.75 | 10 | 11.5 | 5 | 6 | 0.8 | 4.5 | -0.15 to 0.15 | Steel | 0000000 | 0000 | 0000000 | 00000 |
M12 | 1.75 | 10 | 11.5 | 6 | 10 | 1 | 9 | -0.15 to 0.15 | Steel | 0000000 | 0000 | 0000000 | 00000 |
M12 | 1.75 | 10 | 11.5 | 6 | 10 | 1 | 16 | -0.15 to 0.15 | Steel | 0000000 | 0000 | 0000000 | 00000 |
M18 | 1.5 | 16 | 18 | 10 | 16 | 1.6 | 33 | -0.15 to 0.15 | Steel | 0000000 | 0000 | 0000000 | 00000 |
M18 | 1.5 | 16 | 18 | 10 | 16 | 1.6 | 45 | -0.15 to 0.15 | Steel | 0000000 | 0000 | 0000000 | 00000 |
As the face of these plungers is pushed in, the internal spring applies outward pressure to hold a workpiece in position against stops and rails. Plungers allow easy insertion and removal of parts in a fixture and accommodate slight variations in size from part to part. They mount on flat surfaces. Also known as spring stops.
Round face holds curved and contoured surfaces.
Square face with chamfered bottom provides extra clearance for workpieces that have weld beads or imperfections.
An acetal face is nonmarring to protect soft metal and polished surfaces. A steel face is strong and wear resistant. Choose a stainless steel face for chemical and corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Base | Mounting Hole | ||||||||||||
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Face Dia. | Plunger Travel | Shape | Lg. | Wd. | Spring Force, lbs. | Body Material | No. of | Dia. | Ctr-to-Ctr Wd. | Ctr.-to-Face Lg. | Fasteners Included | Each | |
Acetal Plastic Face | |||||||||||||
0.38" | 1/8" | Triangular | 0.688" | 0.875" | 1.5-2.5 | Aluminum | 2 | 0.138" | 0.656" | 0.593" | No | 0000000 | 00000 |
0.38" | 1/8" | Triangular | 0.688" | 0.875" | 5.1-14.6 | Aluminum | 2 | 0.136" | 0.656" | 0.593" | No | 0000000 | 0000 |
0.56" | 3/16" | Rectangular | 1" | 1.5" | 2.3-25.8 | Aluminum | 2 | 0.203" | 1.125" | 0.875" | No | 0000000 | 0000 |
0.81" | 1/4" | Rectangular | 1.375" | 2" | 16.5-47.5 | Aluminum | 2 | 0.266" | 1.5" | 1.218" | No | 0000000 | 00000 |
Steel Face | |||||||||||||
0.38" | 1/8" | Triangular | 0.688" | 0.875" | 1.5-2.5 | Aluminum | 2 | 0.138" | 0.656" | 0.593" | No | 0000000 | 0000 |
0.38" | 1/8" | Triangular | 0.688" | 0.875" | 5.1-14.6 | Aluminum | 2 | 0.136" | 0.656" | 0.593" | No | 0000000 | 0000 |
0.56" | 3/16" | Rectangular | 1" | 1.5" | 2.3-25.8 | Aluminum | 2 | 0.203" | 1.125" | 0.875" | No | 0000000 | 0000 |
0.81" | 1/4" | Rectangular | 1.375" | 2" | 16.5-47.5 | Aluminum | 2 | 0.266" | 1.5" | 1.218" | No | 0000000 | 00000 |
Stainless Steel Face | |||||||||||||
0.38" | 1/8" | Triangular | 0.688" | 0.875" | 1.5-2.5 | Aluminum | 2 | 0.138" | 0.656" | 0.593" | No | 0000000 | 00000 |
0.38" | 1/8" | Triangular | 0.688" | 0.875" | 5.1-14.6 | Aluminum | 2 | 0.138" | 0.656" | 0.593" | No | 0000000 | 00000 |
0.56" | 3/16" | Triangular | 1" | 1.5" | 2.3-25.8 | Aluminum | 2 | 0.19" | 1.125" | 0.875" | No | 0000000 | 00000 |
0.81" | 1/4" | Triangular | 1.375" | 2" | 16.5-47.5 | Aluminum | 2 | 0.25" | 1.5" | 1.218" | No | 0000000 | 00000 |
Base | Mounting Hole | |||||||||||||
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Face Wd. | Plunger Travel | Shape | Lg. | Wd. | Spring Force, lbs. | Body Material | No. of | Dia. | Ctr.-to-Ctr. Wd. | Ctr.-to-Ctr. Lg. | Ctr.-to-Face Lg. | Fasteners Included | Each | |
Steel Face | ||||||||||||||
0.63" | 1/8" | Triangular | 0.688" | 0.875" | 5.1-14.6 | Aluminum | 2 | 0.136" | 0.656" | __ | 0.656" | No | 0000000 | 00000 |
0.88" | 3/16" | Rectangular | 1" | 1.5" | 2.3-25.8 | Aluminum | 2 | 0.203" | 1.125" | __ | 0.983" | No | 0000000 | 0000 |
1.25" | 1/4" | Rectangular | 1.375" | 2" | 16.5-47.5 | Aluminum | 2 | 0.266" | 1.5" | __ | 1.312" | No | 0000000 | 00000 |
1.75" | 1/4" | Rectangular | 2.25" | 1.75" | 50-160 | Steel | 4 | 0.25" | 1.38" | 1.75" | 1" (A), 2.75" (B) | No | 0000000 | 000000 |
Base | Mounting Hole | ||||||||||||
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Face Wd. | Plunger Travel | Shape | Lg. | Wd. | Spring Force, lbs. | Body Material | No. of | Dia. | Ctr.-to-Ctr. Wd. | Ctr.-to-Face Lg. | Fasteners Included | Each | |
Steel Face | |||||||||||||
0.63" | 1/8" | Triangular | 0.688" | 0.875" | 5.1-14.6 | Aluminum | 2 | 0.136" | 0.656" | 0.656" | No | 0000000 | 00000 |
0.88" | 3/16" | Rectangular | 1" | 1.5" | 2.3-25.8 | Aluminum | 2 | 0.203" | 1.125" | 0.983" | No | 0000000 | 00000 |
1.25" | 1/4" | Rectangular | 1.375" | 2" | 16.5-47.5 | Aluminum | 2 | 0.266" | 1.5" | 1.312" | No | 0000000 | 00000 |
Set the tang in a hole or recess below the work surface to ensure thin material cannot slide underneath the plunger's face. As the face is pushed in, the internal spring applies outward pressure to hold a workpiece in position against stops or rails. Plungers allow easy insertion and removal of parts in a fixture and accommodate slight variations in size from part to part. They mount on flat surfaces. Also known as spring stops.
For technical drawings and 3-D models, click on a part number.
Base | Mounting Holes | Steel Face | |||||||||||
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Face Wd. | Plunger Travel | Shape | Lg. | Wd. | Spring Force, lbs. | Body Material | No. of | Dia. | Ctr.-to-Ctr. | Ctr.-to-Face Lg. | Mounting Fasteners Included | Each | |
Square Face with Tang | |||||||||||||
0.63" | 1/8" | Triangular | 0.688" | 0.875" | 5.1-14.6 | Aluminum | 2 | 0.136" | 0.656" | 0.656" | No | 0000000 | 00000 |
0.88" | 3/16" | Rectangular | 1" | 1.5" | 2.3-25.8 | Aluminum | 2 | 0.203" | 1.125" | 0.983" | No | 0000000 | 0000 |
1.25" | 1/4" | Rectangular | 1.375" | 2" | 16.5-47.5 | Aluminum | 2 | 0.266" | 1.5" | 1.312" | No | 0000000 | 00000 |
To align two parts with more precision than standard spring plungers, these index plungers have a mating bushing that improves alignment and repeatability. Press-fit the bushing into one part, and install the plunger body through a hole in the other part. The plunger has a notch on the side for locking it in place with a set screw (not included). A quarter turn of the handle retracts the plunger.
Lg. | Shoulder | ||||||||||
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Dia. | Dia. Tolerance | (A) | (B) | Dia. | Lg. | Nose Dia. | Extended Nose Lg. | Overall Lg. | Material | Each | |
Plunger | |||||||||||
0.752" | 0" to 0.0003" | 1 1/4" | 1 1/8" | 7/8" | 1/8" | 1/2" | 5/16" | __ | Steel | 0000000 | 0000000 |
1.127" | 0" to 0.0003" | 1 7/8" | 1 1/2" | 1 1/4" | 1/8" | 3/4" | 3/8" | __ | Steel | 0000000 | 000000 |
1.502" | 0" to 0.0004" | 2 1/8" | 1 7/8" | 1 5/8" | 1/8" | 1" | 3/8" | __ | Steel | 0000000 | 000000 |
Bushing | |||||||||||
0.752" | 0" to 0.0003" | __ | __ | 7/8" | 1/8" | __ | __ | 7/16" | Steel | 0000000 | 00000 |
1.127" | 0" to 0.0003" | __ | __ | 1 1/4" | 1/8" | __ | __ | 9/16" | Steel | 0000000 | 00000 |
1.502" | 0" to 0.0004" | __ | __ | 1 5/8" | 1/8" | __ | __ | 11/16" | Steel | 0000000 | 00000 |