Series 263HC

Image for Series 263HC - Card Lok Retainer from Schroff - North America
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Catalog Number:  263HC
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  • Profile 6.35 mm (.250 in) x 7.44 mm (.293 in)
  • For cold wall applications
  • Screw actuated
  • Max expansion 8.89 mm (.350 in)
  • Length 96.5 mm (3.80 in) to 172.7 mm (6.80 in), 12.7 mm (0.5 in) increments
  • Flexible mounting options
  • Available with black anodized, hard black anodized, or electroless nickel plating
  • Weight 1.07 g/cm (.096 oz/in)
  • Average clamp force (4.80", black anodized) = 911 lbs
  • 5 segment, shafted design

    The 263HC features a unique wedge design provides more than triple the clamping force of similarly sized Card Loks, providing superior protection in high shock and vibration applications. The 263HC can be a drop in replacement for most existing Series 263 Card Lok applications.


    The Series 263HC Card Lok also features a lighter weight, narrow profile ideal for retaining PCBs that are densely populated within the enclosure. The shafted design provides more uniform clamping force over the length of the card lok, while maintaining wedge and body alignment for easier installation.


    From time to time, nVent may modify its product specifications to be in conformity with applicable industry, military or other relevant standards. Unless otherwise mutually agreed in writing, cancelled or superseded military specifications may be certified to the latest or superseding specifications. Products manufactured in conformity with such specifications will be deemed fully compliant whether or not you have been notified of such modifications, even if different from the original specification or those referenced by the customer.

    Average Clamp Force [lbs]:


Order Information:

  • For customized products contact or 1-800-854-7086. Please provide drawing, quality clauses, and purchase order requirements.
  • Select product specifications before modifying or adding to project list or requesting a quote.

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    Technical Data

    Recommended Gap Width PCB + 8.25 mm (.325 in)
    Recommended Torque 68 N-cm (6 in-lbs), with "L" option 90 N-cm (8 in-lbs)