clamping bolt with washer Ø 28 mm

The clamping bolt Ø 28 mm, with a matching washer (Ø 40 mm), secures adapter plates, brackets, and threaded plates to perforated panels with 28-mm holes. When tightening the galvanized socket screw (SW 6), the black-oxide steel bolt locks firmly into the hole—this clamping mechanism protects the hole wall instead of cutting into it. Like the entire RUWI Steel Line, the bolt is manufactured in Germany.

Here's how to use it

• Anchoring fixtures: The angle bracket and adapter plates fit precisely into the hole—the clamping position is exactly where the seam requires it.
• Consistent assembly: the same bolt in the same hole results in the same position—mass-produced parts are clamped without the need for realignment.
• Set as a point reference: The bolt alone defines a reference point in the grid—position the workpiece, clamp it, and tack it in place.

Does this go with your table?

The bolt fits into 28-mm holes—on the RUWI tables, these are welding table lifting tablethe leg table with a Ø 28 perforated plate, as well as the tabletop sold separately. For 16- and 20-mm grids, the clamping bolt is available with washers in Ø 16 and Ø 20; the corresponding clamps are shown in the overview of clamps, vertical and horizontal toggle clamps.

All the details

• clamping bolt: Ø 28 mm, steel black-oxide
• socket screw: SW6, galvanised
• Washer: Ø 40 mm, galvanised