top of page
UL-Certified Conduit & Fittings

For wholesale pricing, send the catalog number, trade size, quantity and delivery destination. Contact our team for product selection and UL certification documentation.

Conduit Nipples With Insulated Throat - Zinc Die-Cast

CONDUIT NIPPLES WITH INSULATED THROAT - ZINC DIE CAST

Conduit Nipples With Insulated Throat - Zinc Die-Cast. This rigid conduit accessory is identified by its fitting form, connection arrangement and material. Check both ends or entry sizes where the product has a reducing or transition configuration.

Selection & ordering

  • This product designation includes an insulated or insulating throat option; keep that option identified in your inquiry.
  • Check the stated conduit-to-conduit, conduit-to-box or reducing configuration.
  • Match the listed trade size and any insulated-throat or bonding-screw option to the exact part.

Use the specification tables on this page to confirm catalog number, trade size, dimensions and packing where listed. Send your selected part numbers, quantities and delivery destination for a wholesale quote.

Explore related products

  • Specifications

    CATALOG NUMBER TRADE SIZE INNER CARTON MASTER CARTON
    8521i 1/2" 100 1000
    8522i 3/4" 50 500
    8523i 1" 25 250
    8524i 1 1/4" 25 250
    8525i 1 1/2" 25 250
    8526i 2" 10 40
    8527i 2 1/2" 10 40
    8528i 3" 10 40
    8529i 3 1/2" 10 40
    8530i 4" 5 20
  • Dimensions

    CAT# A B
    8521i 0.644 0.936
    8522i 0.770 1.175
    8523i 0.910 1.395
    8524i 0.945 1.743
    8525i 0.985 2.117
    8526i 1.050 2.519
    8527i 1.517 3.224
    8528i 1.572 3.827
    8529i 1.537 4.272
    8530i 1.541 4.803

Copyright © 2026 united-fittings.com | Copyright © 2026 United Fittings Inc | Manufactures Electrical Fittings

bottom of page