N3904025Q4883 Attachment 6 -MT LH padeye prop drawing_4.pdf

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PNSY- Electrical Discharged Machine (EDM) Notching
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N3904025Q4883
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This document is a technical specification for fabricating a Dry MT L&H Padeye Prop #4 at the Portsmouth Naval Shipyard in Kittery, Maine. The specification details the precise requirements for creating four ultra-fine Electrical Discharge Machining (EDM) notches on a carbon steel plate. Each notch is 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 material will be provided by PNS (Portsmouth Naval Shipyard), and all notches must be disguised with epoxy. The document includes detailed technical drawings showing the precise location and orientation of each notch from multiple viewing angles, prepared by Scott Webster, an NDT Engineering Technician and Instructor, with contact information provided.

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Other files

File Type Posted
N3904025Q4883 Request for Quote (RFQ).pdf PDF
N3904025Q4883 Attachment 3- MT LH padeye prop drawing_1.pdf PDF
N3904025Q4883 Attachment 5 -MT LH padeye prop drawing_3.pdf PDF
N3904025Q4883 Attachment 4 -MT LH padeye prop drawing_2.pdf PDF
N3904025Q4883 Attachment 2- OPSEC Encl 2_Redacted.pdf PDF
GFPN3904025Q4883 Attachment 1.pdf PDF

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Dry MT L&H Padeye Prop #4

Scott Webster Code 135T NDT Eng. Tech. / Instructor Portsmouth Naval Shipyard, Kittery Maine Phone: (207)438-4057 Fax: (207)438-6917

Four Ultra-Fine EDM Notches Placed per Sketch Approximate Locations

Notch #1 = .250” long, .006” wide, .040” deep Notch #2 = .250” long, .006” wide, .040” deep Notch #3 = .250” long, .006” wide, .040” deep Notch #4 = .250” long, .006” wide, .040” deep Length Tolerance +/- .002” Depth Tolerance - .002” (Note: Width & Depth Dim.

Width Tolerance - .001 are max allowed) Epoxy Disguise All Notches Material is Carbon Steel PNS will be providing the material

NOTCH #1

View from “A”side of plate

NOTCH #4

NOTCH #3

NOTCH #2

File details come from the government source that posted it. Updated .