Eaton B-Line series beam clamps, 400 lb, Steel, Beam clamp, 1/4"-20 thread/rod size, Electro-plated zinc
Manufacturer Resources
Product Specs
- Certifications:
- cULus Listed
- Load Capacity:
- 400 lb
- Product Height:
- 2.3125 in
- Product Length Depth:
- 3 in
- Product Weight:
- .72 lb
- Product Width:
- .375 in
- Thread Rod Size:
- 1/4"-20
- Department:
- Electrical
- Product Group:
- Clamps & Supports
- Product Subgroup:
- Clamps
- Product Type:
- Beam clamp
- Product Details:
- Beam clamp
- Product Material:
- Steel
B-LINE B303ZN – Frequently Asked Questions
1) What size hanger rod does the B-Line B303ZN beam clamp take?
The B303ZN beam clamp is tapped 1/4"-20, so it accepts 1/4 inch threaded rod or a 1/4"-20 bolt or eye rod. If your run is hung on 3/8-16 rod, this is the wrong clamp size, you need the 3/8 inch tapped version of the series.
2) How much weight can a 1/4 inch B-Line beam clamp hold?
Rated 400 lb load capacity. That covers typical conduit runs, small cable tray drops, box supports and light pipe hangers. For heavier trapeze loads, step up to a larger clamp and rod size rather than doubling up on this one.
3) Is the B303ZN beam clamp UL listed for electrical support work?
It is cULus Listed, so it satisfies inspectors looking for a listed support component on conduit and cable runs in both US and Canadian jurisdictions.
4) Can I use a steel beam clamp outdoors or in a damp mechanical room?
The B303ZN is steel with an electro-plated zinc finish. Zinc plating is a mild indoor corrosion coating, fine for dry interiors and conditioned mechanical spaces. For exterior, wet, or corrosive areas, specify a hot dip galvanized or stainless clamp instead.
5) Do I need to drill or weld the beam to hang conduit from it?
No. A beam clamp like the B303ZN grips the flange mechanically, so nothing gets drilled, welded, or field modified. That is usually what building owners and structural engineers require, since beam penetrations need engineering approval and a clamp does not.
6) What is the B-Line part number I should order for a 400 lb, 1/4-20 zinc beam clamp?
Order Eaton B-Line B303ZN. The ZN suffix is the electro-plated zinc finish, and that single catalog number covers the 400 lb, 1/4"-20 steel clamp.
7) Is the threaded rod included with the B303ZN beam clamp?
No rod is supplied. You order the clamp and the 1/4"-20 rod, nuts, and whatever hanger or strap terminates the drop separately. Count on one clamp per drop point when you are taking off a job.
How fast can I get the B-LINE B303ZN delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE B303ZN come with a warranty?
Absolutely. The B-LINE B303ZN is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE B303ZN?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the B-LINE B303ZN from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.