Bell Nut & Screw Assembly


  • Price per assembly
  • For marine portlights and fixed lights
  • Each assembly includes
    • 1 - Brass Bell Nut
    • 1 - Brass Screw (eye bolt), sizes available:
      • 1/2" diameter, 2-3/4" long - for 8" diameter lights (SKU# CT-BNS-1/2X2.75-07-700)
      • 5/8" diameter, 3" long - for 10" and 12" diameter lights (SKU# CT-BNS-5/8X3-07-700)
      • 5/8" diameter, 3-3/4" long - for 10" and 12" diameter lights (SKU# CT-BNS-5/8X3.75-07-700)
      • 3/4" diameter, 3" long - for 14", 16", and 18" diameter lights (SKU# CT-BNS-3/4X3-07-700)
      • 3/4" diameter, 3-7/8" long - for 14", 16", and 18" diameter lights (SKU# CT-BNS-3/4X3.75-07-700)
    • 1 - Stainless Steel Roll Pin
    • 1 - Stainless Steel Retainer Pin (prevents bell nut from getting backed off the screw)
  • Used on Cen-Tex Drawings: #600, #700, #800, and #900

Links to resources:

Drawing of Portlight - Cen-Tex #800
For installation and maintenance instructions, please email us at:

ATTENTION Washington State Customers:

Sales tax will NOT be charged on your purchases if we have a current copy of your Washington State Reseller Permit, or your tax exempt certificate. We will contact you when processing your order to verify your tax exempt status. For retail customers, there will be a separate charge for sales tax due. If this is a rush order, please email a copy of your certificate to:


Please measure twice, order once!

A 25% restocking fee will be deducted from your refunded payment for all returned parts orders.
Please use the attached diagrams to make sure that the parts you are ordering will fit.

We are wholesale distributors and do not maintain a retail space. Any in-person consultations are by appointment only.