GN 251.2 Stop Bolts Steel, With Limit Switch


Product description


GN 252.5 stop bolts are supplied with a hardened round head that serves as a firm end stop. Typically these bolts are installed with a locknut.

When the workpiece contacts the bolt head, an electrical signal is transmitted by means of the limit switch.

By means of the knurled nut, the limit switch can be installed and removed without need for loosening the setting bolt.

Note: If the screw-in thread is grounded, the blue wire has to be connected to the workpiece.


Steel, nickel-plated, hardened to HRC45, tensile strength 500 N/mm2, hexagon head

Hexagon nuts
Steel, nickel plated

End limit switch
  • Voltage--5-24 V DC
  • Switching load recom--5 - 10 mA
  • Switching load--20 mA DC max.
  • Life expectancy--3 million operations
  • Temperature range-- -10°C - 80°C (-14°F - 175°F)
  • Load--~1 N

Supply wire
  • Diameter--3mm
  • 2-phase, ~ 2 meters long
  • Max. tensile load 30 N
  • Gray for Type S
    (normally open)
  • Black for Type O
    (normally closed)

Protection classification
IP 40

RoHS compliant

Technical drawing

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GN 251.2 Steel Stop Bolts, With Limit Switch  sketch

Part Options / Table


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Dimensions in: Inch | Metric

Build & Price

Thread d
Thread length l1

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Total USD (net)
In stock: 0
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Please note our quantity discounts (USD).
≥ 250$116.28
Weight: 0.176 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
RoHS compliant: Yes
This article conforms to RoHS, which means it complies with EU Directive 2011/65/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)).
All Prices are in US Dollars. Taxes Not Included.

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