N390406036V100 Attachment 4 2370A0000354 Outer Ring.pdf

This is a technical engineering drawing for a weld mockup outer ring component manufactured by Portsmouth Naval Shipyard's Nuclear Refueling Engineering Division. The drawing specifies detailed dimensions and tolerances for an alloy 600 (N06600) ring with a third-angle projection view, including precise measurements for outer diameter (9.240 ± .020 inches), inner diameter (7.280 +.004/-.000 inches), and various surface specifications. The component requires manufacturing per MIL-N-23229 Type II or III specifications, ASTM B166, or ASTM B168 standards, with all sharp edges chamfered to a minimum of 0.015 inches and all surfaces finished to 125 RA microinches or better.

Manufacturing requirements mandate that all surfaces and holes be visibly free of cutting fluid, tape residue, machine chips, grease, oil, flux, dirt, and foreign material upon completion, with assembled components requiring inspection and cleaning prior to assembly. The component must be marked with engraved characters "RF-3086 LIN 0002" in the location specified. Decimal tolerances follow standard conventions (.XX ± .01, .XXX ± .005, etc.) with angles maintained to ±0.9 degrees. The drawing is designated 2370A0000354 and is part of the Portsmouth Naval Shipyard's procurement documentation under code 2370 for Kittery, Maine, with the original revision status indicated.