N3904025Q4883 Attachment 4 -MT LH padeye prop drawing_2.pdf

This document is a technical specification for a dry magnetic testing (MT) L&H Padeye Prop #2, created by Scott Webster from the Portsmouth Naval Shipyard in Kittery, Maine. The specification details the precise requirements for four ultra-fine Electrical Discharge Machining (EDM) notches to be placed on a carbon steel plate. Each notch is specified to be 0.250" long, 0.006" wide, and 0.040" deep, with strict tolerances of +/- 0.002" for length and -0.002" for depth. The notches are to be epoxy-disguised, and the material will be provided by PNS (Portsmouth Naval Shipyard). The document includes multiple detailed views and diagrams showing the precise location and dimensions of the four notches from different perspectives.