Ground Clamp · 2-1/2 in to 4 in Pipe Range · Brass Body with Brass Screw · Nesco 626C
Brass ground clamp for bonding bare copper wire to 2-1/2 in to 4 in (64 to 102 mm) pipe or grounding electrode. Commonly listed for No. 10 to No. 2 AWG copper conductors, making it suitable for grounding and bonding work in residential, commercial, and light industrial installations.
What this product is for
This brass ground clamp is used to connect bare copper grounding conductors to 2-1/2 in to 4 in (64 to 102 mm) pipe, conduit, or grounding electrode surfaces where a mechanical bonding connection is required.
Use for
Use for grounding and bonding connections with bare copper wire in the commonly listed No. 10 to No. 2 AWG range. Suitable for service grounding, bonding jumpers, and retrofit grounding work where the pipe size falls within the clamp range.
Avoid for
Avoid using this clamp on pipe sizes outside the 2-1/2 in to 4 in (64 to 102 mm) range, on insulated conductors, or where local code requires a different grounding connector type or material. Do not use where the installation surface is incompatible with the clamp listing.
Best for
Best for electricians and contractors who need a larger pipe-range grounding clamp with a brass body and brass screw for corrosion resistance and a secure mechanical connection.
Installed in
Typically installed in residential, commercial, and industrial electrical systems, including service grounding and bonding applications on metallic piping or grounding electrodes of the correct diameter.
Why this product exists
This clamp provides a practical way to bond bare copper grounding conductors to larger diameter metallic pipe or electrode surfaces without changing to a different connector style. Proper fit across the listed pipe range helps maintain contact pressure and installation efficiency.
Compared with similar products
Compared with smaller ground clamps, this model covers a larger 2-1/2 in to 4 in pipe range. Brass body and screw construction is commonly selected where corrosion resistance matters. As typical trade guidance, always match the clamp range and conductor size to the actual installation and local electrical code.
Specifications
- Product type: Ground clamp
- Brand: Nesco
- Manufacturer part number: 626C
- Material: Brass
- Screw material: Brass screw
- Pipe size range: 2-1/2 in to 4 in (64 to 102 mm)
- Common conductor range listed by distributors for this part family: No. 10 to No. 2 AWG copper
- Application: Grounding and bonding for bare copper wire
Note: Conductor compatibility should be confirmed against the exact product listing and local code requirements before installation.
- ApplicationGrounding and bonding for bare copper wire
- MaterialBrass
- BrandsNesco
- Stock in Elmira4
- 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.
Contact Aptico SupplyWe accept the following payment methods:
To replace this text with your store's actual info on payment methods, go to "Design -> Menus & Pages -> Product Page Tabs" and edit the Payment methods page.
This page is intended for your policy regarding returns and refunds.
Here you can provide information as to what products can be returned, how many days your customers have to return their purchase, whether they will receive a refund in the original form of payment, a replacement or a store credit, who pays for the shipping of the previously purchased products to the store, and so on.
To replace this text with your store's actual return policy, go to "Design -> Menus & Pages -> Product Page Tabs" and edit the Return Policy page.



