Maykestag HSS UNF Round Die No. 6-40 ANSI B 1.1

Product information

Maykestag HSS UNF Round Die No. 6-40 ANSI B 1.1 Professional HSS threading die for cutting Unified National Fine (UNF) external threads in the No. 6-40 size. Manufactured to Maykestag's WN specification with a 60° unified thread profile, Form B geometry and 2A thread tolerance for accurate, dependable thread production. The Maykestag Code 5773 HSS die is designed for producing UNF No. 6-40 external threads . The No. 6 designation identifies the nominal unified thread size, while the 40 indicates 40 threads per inch (TPI) . UNF threads use a fine pitch compared with the corresponding UNC coarse-thread series, making them suitable where a finer unified thread is specified. What is a UNF threading die? A threading die is a cutting tool used to form an external screw thread on a suitable workpiece. UNF stands for Unified National Fine and forms part of the Unified Thread Standard. The Code 5773 die produces the 60° thread profile associated with the UNF system and is intended for applications requiring the specified No. 6-40 thread. Product highlights • No. 6-40 UNF thread: Produces a No. 6 Unified National Fine external thread with 40 threads per inch. • HSS construction: Manufactured from high-speed steel for dependable cutting performance and wear resistance in suitable materials. • 60° thread profile: Correct profile angle for Unified National thread forms. • 2A tolerance: Designed for the standard 2A external-thread tolerance class specified for this die. • Form B: Manufactured with the Form B configuration specified by Maykestag for the Code 5773 range. • WN specification: Produced according to Maykestag's works-standard requirements for this threading-die series. • 20mm outside diameter: Compact round die body with a 20mm outside diameter. • 5mm thickness: The die body has a catalogue-specified thickness of 5mm. Why Choose Maykestag? Maykestag specialises in precision cutting tools for professional machining and thread production. With threading tools, accurate geometry is especially important because the cutting edges must generate the required pitch, profile and thread form consistently. The Code 5773 range combines HSS cutting material with precisely defined UNF geometry and dimensional specifications. This No. 6-40 version is a practical professional choice for workshops, maintenance departments and production environments where a correctly formed fine external thread is required. Designed for Accurate UNF Thread Cutting The No. 6-40 thread combines a fine 40 TPI pitch with the standard 60° unified thread profile. Using the correct die alignment, suitable cutting conditions and appropriate lubrication for the workpiece material helps the cutting edges form a clean, consistent thread while reducing unnecessary cutting load and tool wear.

Category: Drilling > Threading > Dies