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Manufacturer Resources
RC 3 1/2 Spec Sheet
Product Specs
- Product Group:
- Hangers, Supports & Fasteners
- Product Details:
- Beam Clamps
- Product Material:
- Other
- Department:
- Electrical
- Rotatable:
- N
- Outer Quantity:
- 25
- Product Type:
- Beam Clamp
- Product Subgroup:
- Clamps
Steel City RC-3 1/2HDG – Frequently Asked Questions
1) What is the difference between Steel City RC 3 1/2 and RC-3 1/2HDG?
Same beam clamp, two finishes. The RC 3 1/2 is the standard finish version; the RC-3 1/2HDG is hot-dip galvanized, which is what you want for exterior runs, parking structures, wash-down areas, or anywhere the clamp sees moisture. Indoor dry conditioned space, the standard finish is fine.
2) What is a comparable beam clamp to the Steel City RC 3 1/2 if I need a tapped 1/4-20 screw-type clamp?
The Appleton IS-500 is a malleable iron beam clamp with a screw-type hexagonal head and a 1/4-20 tapped hole. The Steel City RC 3 1/2 beam clamp comes in a standard finish (MPN RC 3 1/2) and a hot-dip galvanized finish (MPN RC-3 1/2HDG), so if the run is outdoors or in a damp location the HDG version is the one to specify. The IS-500 identifies by series rather than by a stated finish, so confirm the body treatment against the opening you are hanging in.
3) What other beam clamps could I use instead of the Steel City RC 3 1/2?
Two alternatives worth looking at depending on how you are hanging. The Appleton IS-500 is a malleable iron screw-type clamp with a hexagonal head, tapped 1/4-20, so it takes a 1/4-20 threaded rod or hanger directly. The Kindorf FBC1 is a structural beam clamp also sized for 1/4"-20 threaded rod and comes 100 to a pack, which suits a large repetitive conduit run.
4) Is the hot-dip galvanized RC-3 1/2HDG suitable for outdoor use?
Hot-dip galvanizing is the standard corrosion coating for exposed structural and support hardware, so the RC-3 1/2HDG is the version to order for outdoor, unconditioned, or damp interior locations. The standard-finish RC 3 1/2 should be kept to dry interior work.
5) Is the Kindorf FBC1 a direct replacement for a Steel City RC 3 1/2 beam clamp?
They are not interchangeable on identity. The Kindorf FBC1 is a structural beam clamp built around 1/4 inch-20 threaded rod and ships 100 to a pack, while the Steel City RC 3 1/2 is its own beam clamp model offered in standard and hot-dip galvanized finishes. For a fleet of fixtures already hung on RC 3 1/2 clamps, order the RC 3 1/2 or RC-3 1/2HDG by part number rather than crossing to the FBC1, and verify flange fit before mixing clamp models on one run.
6) I am hanging 1/4-20 threaded rod from a structural beam - which clamp should I use?
The Kindorf FBC1 is a structural beam clamp made specifically for 1/4 inch-20 threaded rod and is sold in packs of 100, which suits a large repetitive rod-drop layout. The Appleton IS-500 handles the same 1/4-20 thread as a tapped screw-type clamp. The Steel City RC 3 1/2 beam clamp is supplied in cartons of 25, so match the pack size to the number of drops on the job.
7) Do Steel City RC 3 1/2 beam clamps come individually or in a box quantity?
They ship in cartons of 25. Worth knowing if you are pricing a hanger layout, since one carton covers 25 support points.
How fast can I get the Steel City RC-3 1/2HDG 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 Steel City RC-3 1/2HDG come with a warranty?
Absolutely. The Steel City RC-3 1/2HDG 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 Steel City RC-3 1/2HDG?
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