GN 251 Stop Bolts Steel


GN 251 Steel Stop Bolts Type: AK - Spherical locating surface, hardened
Type: AK - Spherical locating surface, hardened
GN 251 Steel Stop Bolts Type: AK - Spherical locating surface, hardened GN 251 Steel Stop Bolts Type: BK - Locating surface with Polyurethane disk

Product description


GN 251 stop bolts can be used as end stops or as supports.

Type AK has a hardened spherical head to handle greater forces. Type BK with Polyurethane disk acts as a damping element or to protect sensitive surfaces.

A hex nut is supplied for locking the screw in place.


Steel, property class 5.8

Type AK

  • Blackened finish
  • Locating surface hardened to HRC 45

Type BK

  • Nickel plated
  • Polyurethane disk, 90 shore

Hex nut
Steel, zinc plated, blue passivated finish


Technical drawing

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GN 251 Steel Stop Bolts sketch

Part Options / Table


AKSpherical locating surface, hardened
BKLocating surface with Polyurethane disk
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Dimensions in: Inch (change to Metric)
Type AK

Type BK
M 30.390.590.790.981.18-------------
M 40.390.590.790.981.181.381.57---0.590.790.981.181.381.57-0.200.320.
M 50.390.590.790.981.181.381.571.97--0.590.790.981.181.381.57-0.240.360.
M 60.590.790.981.181.381.571.97---0.790.981.181.381.571.771.970.310.450.
M 80.590.790.981.181.381.571.972.362.763.150.790.981.181.381.571.771.970.390.590.
M 101.181.381.571.972.362.763.15---0.790.981.181.381.571.771.970.510.770.280.310.
M 121.181.381.571.972.362.763.15-----------0.860.310.39-0.20-0.75
M 161.972.362.763.15--------------1.090.390.51-0.24-0.94

Build & Price

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Thread d1
Thread length l1 (Type AK)
Thread length l1 (Type BK)

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Total US Dollars (net)
In Stock: 6
In Stock
Please note our quantity discounts (US Dollars).
≥ 500$5.51
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: 0.002 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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Our service team is available from Monday to Friday between 7:30 AM and 5:00 PM Central Time: 800-877-8351

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