OBO BS-N1-K-28 FT U-Bolt Clamp 22-28mm Hot-Dip Galvanized Steel M8

Securing pipes, conduits, and cables to structural steel often means wrestling with flimsy clamps that slip or corrode. The OBO BS-N1-K-28 FT U-bolt clamp eliminates that frustration with a forged steel body and hot-dip galvanized finish that locks onto 22–28 mm diameters and shrugs off harsh indoor and outdoor conditions. Two M8 hex nuts let you torque it down tight, while the DIN 3570 Form A geometry keeps everything aligned under load.

Who is it for

Electrical installers, pipefitters, and maintenance crews who need a dependable, corrosion-resistant fastening point for conduits, pipes, or cables on beams, channels, or walls. Ideal for commercial, industrial, and outdoor infrastructure projects where vibration and weather are daily realities.

Main features

• Clamping range 22–28 mm fits standard metric pipes and conduits.
• Hot-dip galvanized steel (tauchfeuerverzinkt) delivers high corrosion resistance for long service life.
• M8 thread with two included hex nuts provides secure, tool-friendly installation.
• Internal dimensions 30 mm wide × 40 mm high accommodate insulation or multiple small cables.
• DIN 3570 Form A compliance ensures compatibility with standard mounting hardware.
• Two fastening points distribute load evenly and resist twisting.

Specifications

• Brand: OBO Bettermann
• Model: BS-N1-K-28 FT
• MPN: 1187220
• EAN: 4012196852819
• Product type: U-bolt clamp
• Clamping diameter: 22–28 mm
• Material: Steel
• Surface finish: Hot-dip galvanized
• Thread size: M8
• Rod diameter: 6 mm
• Internal width (a): 30 mm
• Internal height (b): 40 mm
• Number of fastening points: 2
• Included accessories: 2 hex nuts M8
• Standard compliance: DIN 3570 (Form A)
• Application: Pipe, conduit, cable fastening
• Installation environment: Indoor and outdoor
• Corrosion resistance: High
• Colour: Metallic grey

Tips

For outdoor use, pair with galvanized threaded rod and nuts to maintain full corrosion protection. Pre-drill mounting holes to the U-bolt leg spacing, then tighten nuts alternately to avoid cocking. Check clamp alignment after the first thermal cycle if used on pipes that expand and contract.