- Stock 40
Locknut · 3/8 in NPT · Flanged polyamide black · ITC Electrical 184.138
3/8 in NPT flanged polyamide locknut for securing cable glands and threaded fittings in panels and enclosures. The flanged design provides a larger bearing surface to help seat against the panel and accommodate minor cutout irregularities.
What this product is for
This 3/8 in NPT flanged polyamide locknut is used to secure compatible cable glands or threaded accessories to electrical panels, boxes, and enclosures where the entry hole is not threaded.
Use for
Use for 3/8 in NPT cable gland installations, enclosure wall entries, and panel-mounted accessories that need a lightweight non-metallic locknut. Commonly used in control panels, machinery, and commercial or industrial electrical assemblies.
Avoid for
Avoid using this locknut with mismatched thread types such as BSP or metric threads, or where a metal locknut is specifically required by the application, bonding method, or project specification.
Best for
Best for electricians and panel builders needing a non-metallic 3/8 in NPT locknut with a wider contact surface than a standard non-flanged style.
Installed in
Typically installed inside electrical enclosures, junction boxes, control cabinets, and equipment housings. For panel entries, a sealing washer may be added on the exterior side where improved sealing is needed.
Why this product exists
The flange increases the contact area against the panel, which helps improve fit and support at the entry point. According to the manufacturer, flanged nylon locknuts help provide a better seal and can help correct minor cutout irregularities.
Compared with similar products
Compared with a non-flanged locknut, this flanged version offers a larger bearing surface. Compared with metal locknuts, polyamide locknuts are commonly chosen where a non-metallic accessory is preferred for cable gland assemblies. Actual suitability depends on enclosure design, sealing requirements, and local electrical code.
Specifications
- Product type: Flanged locknut
- Thread size: 3/8 in NPT
- Material: Polyamide 6 with 30% fiberglass
- Colour: Black
- Application: Cable glands and threaded enclosure accessories
- Typical use: Securing fittings where the panel hole is not threaded
- ColourBlack
- ApplicationCable glands and threaded enclosure accessories | Securing fittings where t
- MaterialPolyamide 6 with 30% fiberglass
- Thread Size3/8 in NPT
- BrandsITC Electrical Components
- Stock in Elmira73
- Stock in Flesherton15
Aptico Supply Delivery
Fast Electrical Supply Delivery Across Ontario
Local delivery routes, pickup options, and contractor-focused service from our Elmira and Flesherton locations.

Delivery Built Around Electrical Contractors
Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
Free Daily Delivery
Free daily delivery is available for larger contractor accounts.
- Order by 9:00 AM for morning delivery
- Order by 2:00 PM for afternoon delivery
- Available in qualifying local delivery areas
Free Weekly Delivery
Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
- Order by 11:00 AM on the route day
Pickup Options
Pickup is available from our Ontario locations for customers who prefer to collect their order directly.
- Elmira pickup available
- Flesherton pickup available
- Call ahead for large or special-order items
Local Delivery Areas
See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
Do you offer free delivery?
Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
Yes, jobsite delivery may be available depending on the order size, location, and delivery schedule.
Need Electrical Supplies Delivered?
Contact Aptico Supply to confirm your delivery options, pickup availability, or contractor account eligibility.
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