GN 638 Ball Jointed Leveling Feet Steel, with Plastic Thrust Pad


GN 638 Steel Ball Jointed Leveling Feet, with Plastic Thrust Pad

Product description


Ball jointed leveling feet GN 638 are a low cost solution for clamping operations or for load bearing purposes. The version with plastic thrust pad prevents damage to sensitive surfaces. The stainless steel version is preferred for applications in more aggressive environments or with higher loads.

The ball diameter d3 is smaller than the diameter of the threaded stud, allowing them to be screwed into position from the ball side. It is easy to press the ball end of the grub screw into the thrust pad by hand, and it’s also easily dismantled.

The static load capacity has been determined by a series of tests but are approximate. For these tests the loads were placed vertically over the stud. At the measured load of 787 lbf (3.5 kN) there was no remaining deformation visible on the thrust pad nor was there any breakage.


Grub screw

  • Property class 5.8
  • Blackened finish

Thrust pad
Technopolymer (Polyacetal POM)

  • Temperature resistant up to 176 °F (80 °C)
  • Black, matte finish


Technical drawing

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GN 638 Steel Ball Jointed Leveling Feet, with Plastic Thrust Pad sketch

Part Options / Table

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Dimensions in: Inch (change to Metric)
d1d2l1d3l2A/FStatic load
(See information)
0.591/4 x 201.021.421.81-0.180.301/8787 lbf (3.5 kN)
0.595/16 x 180.791.381.772.280.180.301/8787 lbf (3.5 kN)
0.713/8 x 161.341.732.242.910.240.363/16787 lbf (3.5 kN)
0.833/8 x 161.341.732.242.910.240.393/16787 lbf (3.5 kN)
0.831/2 x 131.342.242.913.700.310.393/16787 lbf (3.5 kN)
0.983/8 x 161.341.732.242.910.240.413/16787 lbf (3.5 kN)
0.981/2 x 131.342.242.913.700.310.413/16787 lbf (3.5 kN)
1.263/8 x 161.341.732.242.910.240.433/16787 lbf (3.5 kN)
1.261/2 x 131.342.242.913.700.310.433/16787 lbf (3.5 kN)
1.573/8 x 161.341.732.242.910.240.513/16787 lbf (3.5 kN)
1.571/2 x 131.342.242.913.700.310.513/16787 lbf (3.5 kN)
1.973/8 x 161.341.732.242.910.240.513/16787 lbf (3.5 kN)
1.971/2 x 131.342.242.913.700.310.513/16787 lbf (3.5 kN)
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Dimensions in: Inch (change to Metric)
d1d2l1d3l2A/FStatic load
(See information)
0.59M 61.021.421.81-0.180.303787 lbf (3.5 kN)
0.59M 80.791.381.772.280.240.304787 lbf (3.5 kN)
0.71M 61.021.421.81-0.180.363787 lbf (3.5 kN)
0.71M 80.791.381.772.280.240.364787 lbf (3.5 kN)
0.71M 101.341.732.242.910.310.365787 lbf (3.5 kN)
0.83M 61.021.421.81-0.180.393787 lbf (3.5 kN)
0.83M 80.791.381.772.280.240.394787 lbf (3.5 kN)
0.83M 101.341.732.242.910.310.395787 lbf (3.5 kN)
0.83M 121.342.242.913.700.370.396787 lbf (3.5 kN)
0.98M 61.021.421.81-0.180.413787 lbf (3.5 kN)
0.98M 80.791.381.772.280.240.414787 lbf (3.5 kN)
0.98M 101.341.732.242.910.310.415787 lbf (3.5 kN)
0.98M 121.342.242.913.700.370.416787 lbf (3.5 kN)
1.26M 61.021.421.81-0.180.433787 lbf (3.5 kN)
1.26M 80.791.381.772.280.240.434787 lbf (3.5 kN)
1.26M 101.341.732.242.910.310.435787 lbf (3.5 kN)
1.26M 121.342.242.913.700.370.436787 lbf (3.5 kN)
1.57M 80.791.381.772.280.240.514787 lbf (3.5 kN)
1.57M 101.341.732.242.910.310.515787 lbf (3.5 kN)
1.57M 121.342.242.913.700.370.516787 lbf (3.5 kN)
1.97M 80.791.381.772.280.240.614787 lbf (3.5 kN)
1.97M 101.341.732.242.910.310.615787 lbf (3.5 kN)
1.97M 121.342.242.913.700.370.616787 lbf (3.5 kN)

Build & Price

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Outer diameter d1
Thread d2



Stud length l1

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Total US Dollars (net)
In Stock: 120
In Stock
Please note our quantity discounts (US Dollars).
≥ 1000$2.26
Prop 65: Not compliant
Cancer and Reproductive Harm -
RoHS: Compliant
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Weight: 0.011 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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