- Stock 103
Grounding locknut with lay-in lug · 1/4 in trade size, aluminium body - ABB LK1.25GZ
1-1/4 in grounding locknut with lay-in lug for bonding conduit or connector terminations in boxes and enclosures. Commonly used where space is tight and a separate grounding bushing and locknut may be impractical; verify conductor range and code requirements for the installation.
What this product is for
This grounding locknut is used to bond threaded conduit entries and fittings to metal boxes or enclosures while providing a lay-in lug connection for the bonding conductor. The 1-1/4 in trade size suits larger conduit entries commonly found in commercial and industrial work.
Use for
Use for bonding conduit connectors inside cabinets, pull boxes, wireways, and equipment enclosures. It is commonly selected where thread length is limited or where a separate grounding bushing and locknut would take up too much space.
Avoid for
Avoid using this product where the required conductor range, enclosure rating, or fitting compatibility cannot be confirmed from the manufacturer documentation. Do not assume lug wire range or environmental suitability unless it is listed for the exact application.
Best for
Best for electricians and panel builders needing a compact bonding method on 1-1/4 in conduit entries. It is a practical choice for data, control, and general equipment grounding applications where enclosure space is limited.
Installed in
Typically installed on 1-1/4 in threaded conduit hubs, connectors, or fittings entering steel boxes and enclosures. 1-1/4 in trade size is approximately 31.8 mm.
Why this product exists
This style combines a locknut and bonding lug in one component to simplify grounding at the enclosure wall. In many field installations, that can reduce parts count and help in tighter layouts compared with using separate bonding hardware.
Compared with similar products
Compared with a standard locknut, this version adds a lay-in lug for bonding. Compared with a separate grounding bushing and locknut, it is typically more compact and commonly used where fitting threads are shorter or working space is restricted. Actual suitability depends on the fitting, conductor size, enclosure layout, and local electrical code.
Specifications
- Product type: Grounding locknut with lay-in lug
- Trade size: 1-1/4 in (approximately 31.8 mm)
- Material: Aluminium body
- Screw material: Electro-zinc plated steel screw
- Lug material: Tin-plated aluminium lay-in lug
- Application: Grounding and bonding for data and control applications
- Standards: CSA 4484, UL E3060
- Colour: Silver
- UPC: 786210695440
- ApplicationGrounding and bonding for data and control applications
- ColourSilver
- MaterialAluminium body
- Trade Size1-1/4 in (approximately 31.8 mm)
- Upc7.86E+11
- StandardsCSA 4484, UL E3060
- BrandsWhite Label
- Stock in Elmira2
- Stock in Flesherton2
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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