Hole Tapping Tools Appraisal

Tap and Die Set in Carrying Case

This item is a comprehensive tap and die set, contained within a sturdy, black plastic carrying case with custom-molded interior compartments to secure each component. The set primarily consists of various sizes of taps and dies, identifiable by their metallic, likely high-speed steel or carbon steel construction, exhibiting a silver-gray appearance. The taps, used for cutting internal screw threads, are visible in numerous sizes and forms, including what appear to be taper, plug, and bottoming taps, arranged neatly along the left side and top of the case. They show some signs of use, including minor discoloration and possible remnants of cutting fluid, but no significant rust or damage affecting their cutting edges is immediately apparent. The dies, designed for cutting external screw threads, are prominently displayed in the center, arranged in hexagonal holders. Many of these dies feature a distinctive three-point star or clover-leaf pattern in their center, indicating their cutting teeth. Some dies have visible etched or stamped markings, likely denoting their size or thread standard (e.g., NC or NF), though these are not clearly legible from the image. Two primary tap wrenches/die stocks are also present on the right side, characterized by their larger size and T-handle or circular design for leverage. One tap wrench appears to have a more traditional T-handle form, while the other is a circular die stock. There are also smaller accessories, such as a possible screw pitch gauge or additional tap handles, scattered within the lower compartments. The case itself shows signs of typical workshop use, with some scuffs and dust, but the internal compartments are well-defined and appear to hold the tools securely, indicating good intrinsic quality for organizing and protecting precision tools. The overall condition suggests a well-used but maintained professional or serious hobbyist's set. The specific manufacturer is not discernible from the visible markings.