Mount Type Mount Type |
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Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Tooling Balls

The shoulder on these tooling balls provides a consistent height reference point. Use the ball as a point from which any other point can be precisely measured, such as when determining hole centerlines and distances between hole centerlines.
Press-fit tooling balls install permanently.
Slip-fit tooling balls have a slightly undersized shank for temporary mounting. Secure from the side with a set screw (not included).
Tooling balls with a threaded hole secure from the bottom by threading a cap screw (not included) into the shank.
Two-piece tooling balls are welded to the shank. If excessive horizontal pressure is applied to the ball it will break off to prevent bending the shank or distorting the tight tolerances of the ball.
For technical drawings and 3-D models, click on a part number.
Press Fit | Slip Fit | ||||||||
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Ball Dia. | Shank Dia. | Shoulder-to-Ball-Ctr. Lg. (A) | Shank-to-Ball-Ctr. Lg. (B) | Lg. (C) | Material | Each | Each | ||
One Piece | |||||||||
1/4" | 1/8" | 0.2" | 0.56" | 0.33" | Steel | 0000000 | 000000 | 0000000 | 000000 |
3/8" | 3/16" | 0.3" | 0.75" | 0.49" | Steel | 0000000 | 00000 | 0000000 | 00000 |
1/2" | 1/4" | 0.4" | 0.94" | 0.65" | Steel | 0000000 | 00000 | 0000000 | 00000 |
1/2" | 1/4" | 0.5" | 1.38" | 0.75" | Steel | 0000000 | 00000 | 0000000 | 00000 |
3/4" | 3/8" | 0.5" | 1.25" | 0.88" | Steel | 0000000 | 00000 | 0000000 | 00000 |
Two Piece | |||||||||
1/4" | 1/8" | 0.2" | 0.56" | 0.33" | Steel | 0000000 | 00000 | 000000 | 00 |
3/8" | 3/16" | 0.3" | 0.75" | 0.49" | Steel | 0000000 | 00000 | 000000 | 00 |
1/2" | 1/4" | 0.5" | 1.13" | 0.75" | Steel | 0000000 | 00000 | 0000000 | 00000 |
1/2" | 1/4" | 1" | 1.63" | 1.25" | Steel | 0000000 | 00000 | 0000000 | 00000 |
1/2" | 1/4" | 1.25" | 1.88" | 1.5" | Steel | 0000000 | 00000 | 0000000 | 00000 |
5/8" | 5/16" | 0.45" | 1.05" | 0.76" | Steel | 0000000 | 00000 | 0000000 | 00000 |
1" | 1/2" | 0.7" | 1.63" | 1.2" | Steel | 0000000 | 00000 | 0000000 | 00000 |
Tooling Ball Cover for 1/4"-7/8" Ball Dia. | 0000000 | Each | 00000 |
Mounting Hole | Slip Fit and Threaded Hole | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Ball Dia. | Shank Dia. | Shoulder-to-Ball-Ctr. Lg. (A) | Shank-to-Ball-Ctr. Lg. (B) | Lg. (C) | Thread Size | Thread Lg. | Mounting Fasteners Included | Material | Each | |
One Piece | ||||||||||
1/2" | 1/4" | 5/16" | 5/8" | 0.56" | 6-32 | 1/4" | No | Steel | 00000000 | 000000 |
12mm | 6mm | 12mm | 22mm | 18mm | 6-32 | 1/4" | No | Steel | 000000000 | 00000 |
Two Piece | ||||||||||
1/2" | 1/4" | 5/16" | 5/8" | 0.56" | 6-32 | 1/4" | No | Steel | 0000000 | 00000 |
1/2" | 1/4" | 1/2" | 7/8" | 0.75" | 6-32 | 1/4" | No | Steel | 0000000 | 00000 |
Tooling Ball Cover for 1/4"-7/8" Ball Dia. | 0000000 | Each | 00000 |
Adjustable-Height Tooling Balls

Install tooling balls in a workpiece or fixture to create a precise measurement reference point. Push the shank further into the hole to adjust the height of the ball. Use them to determine hole centerlines and distances between hole centerlines.
Press-fit tooling balls install permanently.
Slip-fit tooling balls have a slightly undersized shank for temporary mounting. Secure from the side with a set screw (not included).
Two-piece tooling balls are welded to the shank. If excessive horizontal pressure is applied to the ball it will break off to prevent bending the shank or distorting the tight tolerances of the ball.
For technical drawings and 3-D models, click on a part number.
Press Fit | Slip Fit | |||||||
---|---|---|---|---|---|---|---|---|
Ball Dia. | Shank Dia. | Shank-to-Ball-Ctr. Lg. (B) | Material | Hardness | Each | Each | ||
One Piece | ||||||||
1/4" | 1/8" | 0.56" | Steel | Rockwell C52 | 0000000 | 000000 | 0000000 | 000000 |
3/8" | 3/16" | 0.75" | Steel | Rockwell C52 | 0000000 | 00000 | 0000000 | 00000 |
1/2" | 1/4" | 0.94" | Steel | Rockwell C52 | 0000000 | 00000 | 0000000 | 00000 |
1/2" | 1/4" | 1.5" | Steel | Rockwell C52 | 0000000 | 00000 | 0000000 | 00000 |
1/2" | 3/8" | 1.5" | Steel | Rockwell C52 | 0000000 | 00000 | 0000000 | 00000 |
Two Piece | ||||||||
5/8" | 5/16" | 1.06" | Steel | Rockwell C60 | 0000000 | 00000 | 0000000 | 00000 |
3/4" | 3/8" | 1.25" | Steel | Rockwell C60 | 0000000 | 00000 | 0000000 | 00000 |
7/8" | 7/16" | 1.44" | Steel | Rockwell C60 | 0000000 | 00000 | 0000000 | 00000 |
1" | 1/2" | 1.63" | Steel | Rockwell C60 | 0000000 | 00000 | 0000000 | 00000 |
Tooling Ball Cover for 1/4"-7/8" Ball Dia. | 0000000 | Each | 00000 |
Tooling Ball Mounting Pads

Use a mounting pad when your tooling ball needs a raised mounting point. Pads are ground to a tight height tolerance to ensure accurate positioning. The shank of the tooling ball sits in the mounting pad's center hole. Pads have a drilled hole on the side for securing the tooling ball in place with a set screw (not included).
For Tooling Ball Shank Dia. | Ht. | Lg. | Wd. | Ht. Tolerance | For Cap Screw Thread Size | Material | Each | |
1/4" | 1/2" | 2 1/2" | 2" | -0.0005" to 0.0005" | 10-24 | Black-Oxide Steel | 0000000 | 000000 |
5/16" | 1/2" | 2 1/2" | 2" | -0.0005" to 0.0005" | 10-24 | Black-Oxide Steel | 0000000 | 00000 |
3/8" | 1/2" | 2 1/2" | 2" | -0.0005" to 0.0005" | 10-24 | Black-Oxide Steel | 0000000 | 00000 |
1/2" | 3/4" | 2 1/2" | 2" | -0.0005" to 0.0005" | 10-24 | Black-Oxide Steel | 0000000 | 00000 |
Tooling Ball Covers

Protect tooling balls when not in use.
For technical drawings and 3-D models, click on a part number.
Mounting Holes | ||||||||
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For Ball Dia. | Ht. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Fasteners Included | Material | Each | |
1/4"-7/8" | 1 1/2" | 2 | 7/32" | 1 7/8" | No | Zinc | 0000000 | 00000 |