Kotwa M16 fi 21 L-140 Adjustable Hinge Anchor Set Steel S235JR Rosette Galvanized

Product Overview

The Kotwa M16 fi 21 L-140 with adjustable hinge M16 and rosette is a post-installed anchor system used primarily for secure mounting in solid concrete substrates. Its design includes a cylindrical steel sleeve anchor with a reduced diameter at the front, featuring an internal M16 thread that accommodates the supplied adjustable hinge. This system is typically utilized in commercial and industrial settings where precise alignment and strong fixation of steel or heavy doors, gates, or structural elements are required.

A distinguishing feature of this set is the perimeter constriction on the anchor body, which acts as an accumulation point for adhesive, enabling rapid and durable installation using significantly less chemical anchoring compound compared to conventional sleeve anchors. This reduces installation costs and chemical usage, minimizing risk and waste in large-scale procurement. Well suited for project-based procurement in industrial door and gate installations, particularly where efficiency and anchoring stability are a priority.

Key Features

• Steel S235JR construction ? high mechanical strength and durability for demanding applications


• Perimeter constriction ? optimizes bonding with chemical anchors and reduces adhesive consumption


• Internal M16 thread ? supports secure mounting of the included adjustable hinge for alignment flexibility


• Anchor length 140 mm ? covers standard embedment needs for solid concrete applications


• Galvanized zinc coating ? corrosion resistance for improved longevity in indoor or covered outdoor use


• Mounting rosette ? threaded for a clean, professional appearance at the installation site


• Total weight 0.43 kg ? robust unit suitable for heavy-duty fixtures

Technical Specifications

• Anchor Diameter: 21 mm


• Anchor Length: 140 mm


• Thread: M16 (internal)


• Material: Steel S235JR


• Coating: Galvanized zinc


• Color: White zinc


• Weight: 0.43 kg


• Anchor Type: Cylindrical sleeve with constriction


• Hinge: Adjustable, included with rosette

Applications

Used for anchoring and mounting steel gates, industrial doors, heavy-duty frames, and structural elements into solid concrete substrates. Common in factories, warehouses, commercial buildings, and other infrastructure projects where high holding power and installation efficiency are required. Particularly suited for large-scale installations or retrofit works utilizing chemical anchoring compounds.

Packaging & Shipping

Standard export packaging. Each set includes the cylindrical sleeve anchor, adjustable M16 hinge, and rosette. Installation accessories are included in the unit packaging.