Staircases & Handrails 45

Stair and Handrail Connectors for Wood Stairs

KNAPP Connectors supplies a complete range of stair and handrail connectors for new builds and renovations. The line covers discreet railbolts for handrail-to-newel joints, concealed frame connectors for stringers and posts, tread and riser fasteners, and exterior post anchors for decks and porches. Each solution is engineered for fast installation, clean aesthetics, and long-term strength, serving both professional stair shops and DIY installers.

Built for clean, concealed joints

Our connectors tighten from accessible points and hide within the joint, removing the need for exposed screws or caps. Handrails seat firmly to newel posts, treads lock to stringers, and posts anchor securely with a professional finish that reduces site time and touch-ups.

Systems overview

• Rail and handrail bolts: Precision railbolt systems with angled and straight options for secure handrail-to-newel connections and tight joints that can be re-tightened if needed.

• Tread, stringer, and frame connectors: Concealed clamp-bolt and hook-style connectors for tread-to-stringer, furniture-grade frames, and stair stringer-to-post joints where appearance matters.

• Exterior post anchoring: Heavy-duty anchors that elevate posts above the surface to reduce moisture, with protective finishes for outdoor environments.

• Demountable options: Many connectors allow disassembly and reassembly for service or replacement without damaging finished parts.

Key advantages

• Fast installation: Tighten from convenient access points to speed up shop and site work.

• Concealed finish: Hardware hides inside the joint for a clean, architectural look.

• High strength: Steel and stainless steel components deliver reliable, load-bearing performance.

• Indoor and outdoor use: Options with protective coatings and stainless components support exterior projects.

• Repeatable accuracy: Compatible with standard shop tools and CNC workflows for consistent results.

Applications

• Handrail to newel post connections

• Stair treads and risers to stringers

• Stringer to post and landing frames

• Balcony and deck post anchoring

• Interior architectural millwork and furniture frames

Materials and compatibility

Connectors are designed for solid wood and wood-based panels. Many models include stainless or epoxy-coated parts for exterior use and can be installed with common drill and routing setups or integrated into CNC routines for production work.

Build with confidence

From shop fabrication to on-site assembly, KNAPP stair and handrail connectors help you deliver precise alignment, tight joints, and a premium finish with less labor. Browse the collection to select the right fastener for your rail, tread, frame, or post connection.