CM Screwlok Beam Clamp, 1 to 10 Ton I-Beam Clamp

CM Screwlok Beam Clamps

CM Screwlok Beam Clamp, 1 to 10 Ton

The CM Screwlok Beam Clamp attaches to the lower flange of a structural steel I-beam to create a semi-permanent lifting point for manual and electric chain hoists. Available in five capacities from 1 to 10 ton (2,000 to 20,000 lb), it fits I-beam flange widths from 3 to 12.6 in., depending on the model.

A threaded screw mechanism lets you adjust the clamp quickly to the beam width and lock it securely in place. The special jaw design distributes the load away from the flange edge, reducing flange stress, while the built-in suspension bar provides low headroom for applications where every inch of lift counts.

Why the CM Screwlok Beam Clamp

Five capacities: 1, 2, 3, 5 and 10 ton
Adjustable threaded mechanism fits a wide range of flange widths
Jaw design distributes load away from the flange edge
Built-in suspension bar for low headroom
Works with manual and electric chain hoists and rigging hardware
CM lifetime warranty

Choosing the right beam clamp

Select a beam clamp with a capacity equal to or greater than the hoist and load it will support, then check that your beam's flange width falls within the clamp's range. The 1 and 2 ton models fit flanges from 3 to 9 in., the 3 ton fits 3.2 to 12.6 in., the 5 ton fits 3.6 to 12.2 in. and the 10 ton fits 3.6 to 12.6 in. Measure the flange width before ordering.

Ideal for

Rigging operations with vertical or horizontal loads, hoisting anchors in warehouses, workshops and construction sites, entertainment rigging, and positioning and holding beams for welding in commercial and industrial applications.

Related resources

Beam clamps · CM Screwlok Beam Clamps with Shackle · CM CTP Adjustable Trolley Clamp · Manual chain hoists · Electric chain hoists · Shackles · Columbus McKinnon (CM) collection

Safety: Never exceed the rated capacity of the beam clamp, and make sure the beam itself is rated for the load. Install the clamp on the lower flange with the jaws fully seated and the screw tightened, and load it vertically below the beam unless the application has been engineered otherwise. Inspect before each use.

Model	CM Screwlok Beam Clamp (BC Series)
Type	Adjustable screw-type I-beam clamp
BC-1 (09001W)	1 ton (2,000 lb); I-beam width 3 to 9 in. (76 to 229 mm); 9 lb (4.1 kg)
BC-2 (09002W)	2 ton (4,000 lb); I-beam width 3 to 9 in. (76 to 229 mm); 13 lb (5.9 kg)
BC-3 (09003W)	3 ton (6,000 lb); I-beam width 3.2 to 12.6 in. (81 to 320 mm); 18 lb (8.2 kg)
BC-5 (09004W)	5 ton (10,000 lb); I-beam width 3.6 to 12.2 in. (91 to 310 mm); 22 lb (10 kg)
BC-10 (09005W)	10 ton (20,000 lb); I-beam width 3.6 to 12.6 in. (91 to 320 mm); 34 lb (15.4 kg)
Adjustment	Threaded screw mechanism
Suspension	Built-in suspension bar (low headroom)
Applications	Rigging (vertical or horizontal), hoisting anchor, beam positioning for welding
Warranty	Lifetime warranty
Manufacturer	Columbus McKinnon Corporation
Brand	CM

Frequently Asked Questions

What size I-beam does the CM Screwlok Beam Clamp fit?

The CM Screwlok Beam Clamp fits I-beam flanges from 3 to 12.6 in. depending on the model. The 1 and 2 ton fit 3 to 9 in., the 3 ton fits 3.2 to 12.6 in., the 5 ton fits 3.6 to 12.2 in. and the 10 ton fits 3.6 to 12.6 in.

Which capacity CM Screwlok Beam Clamp should I choose?

Choose a CM Screwlok Beam Clamp rated equal to or above the capacity of the hoist it will support. Models range from 1 ton (2,000 lb) to 10 ton (20,000 lb), and the beam itself must also be rated for the full load.

Can the CM Screwlok Beam Clamp be used with electric chain hoists?

Yes. The CM Screwlok Beam Clamp works as a semi-permanent lifting point for both manual and electric chain hoists. Its built-in suspension bar keeps headroom low, which helps where ceiling height or lift distance is limited.

Can the CM Screwlok Beam Clamp be used for horizontal loads?

CM rates the Screwlok Beam Clamp for rigging operations with vertical or horizontal loads, as well as for positioning and holding beams for welding. Always confirm the load direction and capacity with a qualified person before rigging.