Screw Making Tools Appraisal

Tap and Die Set in Wooden Case

This appears to be a vintage or significantly used tap and die set housed in a simple, open-top wooden storage box. The box itself is made of light-colored wood, likely pine or similar, with visible grain patterns and what appear to be mitered or finger-jointed corners, indicative of basic but functional construction. The interior of the box features custom-cut wooden compartments designed to snugly fit the various components of the set, suggesting it was either purpose-built for these tools or modified to house them. The tools themselves consist of three dies (circular threaded cutters) of varying sizes, visibly dark gray or black in color, likely made of hardened steel. They show signs of use, including some wear and perhaps some residual grease or grime, contributing to a slight patina. One of the dies clearly shows the marking '1/2 NPT', indicating its threading specification. Below the dies are what appear to be three taps, which are tools used to cut or form the internal threads of a hole. These taps are also dark in color, ribbed for threading, and exhibit a worn, functional appearance. The surfaces of the tools show scuffs, minor scratches, and uneven coloration consistent with regular use and age. No specific maker's marks are clearly visible on the tools themselves beyond the threading specifications. The overall condition suggests a functional set that has been in use for some time, possibly several decades given the general wear patterns and the traditional wooden box packaging, which is less common for modern sets. The craftsmanship of the tools themselves seems robust and utilitarian.