NWKb 8.5 Long Twist Drill Bit with Distance Sleeve for 3-Part Adjustable Hinges

Product Overview

The Wiertło kręte długie NWKb 8.5 is a long twist drill bit equipped with a distance sleeve, designed for precise drilling in installations requiring adjustable three-part hinges. Frequently used by professional installers and manufacturers in commercial and industrial door assembly environments, it ensures compatibility with regulated hinge systems. The drill bit?s geometry and sleeving support accurate bore placement under workshop and jobsite conditions.

Its integrated distance sleeve distinguishes the NWKb 8.5 from standard twist drill bits, as it enables correct drilling depth and alignment specifically for three-part adjustable hinges. This significantly reduces the risk of misalignment during installation, which is a common challenge in door fitting and hardware mounting processes. Particularly suitable for contractors, OEMs, and hardware fabricators performing bulk installations where consistent hinge placement is required.

Key Features

• Long twist design ? optimizes reach for hinge installation on thick door profiles


• Distance sleeve ? ensures precise depth and bore alignment for three-part hinge systems


• 8.5 mm diameter ? matches standard mounting requirements for regulated hinges


• Engineered for adjustable hinges ? reduces installation errors in regulated hardware


• Durable construction ? suitable for repeated use in commercial workshop settings


• Specialized for NWKb standard ? compatible with industry-recognized hinge assemblies

Technical Specifications

• Drill Bit Type: Twist (kręte)


• Diameter: 8.5 mm


• Compatibility: Three-part adjustable hinges


• Distance Sleeve: Included


• Suitable for: NWKb standard hinge systems

Applications

Optimized for use in commercial door assembly, joinery workshops, and OEM manufacturing where adjustable three-part hinges are installed. Recommended for bulk installation projects in office buildings, factories, and public infrastructure requiring regulated hinge fitting. Ensures accurate drilling for hinge bore alignment in wooden, composite, or metal doors.

Packaging & Shipping

Standard export packaging. Each unit includes the drill bit with distance sleeve. Installation accessories are not included.