CNC lathe cutting an external tapered NPT thread on a stainless steel custom fitting inside a guarded enclosure
CNC Machining Design Guide

NPT Thread Machining Cost for Custom Turned Fittings: DFM and RFQ Guide

Featured snippet: The cost of machining an NPT thread on a custom fitting depends on the thread size and engagement length, material, tool access, setup quantity, gaging requirements, and any secondary features. A lower quote usually comes from defining the actual sealing interface and inspection criteria clearly, then simplifying the fitting around that interface instead […]

Depth gauge checking a flush socket-head screw in a CNC-milled aluminum counterbore
CNC Machining Design Guide

Counterbore Depth Tolerance for CNC Milled Parts: Flush Fasteners Without Extra Cost

Featured snippet: A counterbore should be dimensioned from the finished bearing face so the selected socket-head screw seats below the required clearance plane at worst case while enough material remains beneath the recess. The economical tolerance is the widest diameter and depth range that still satisfies that assembly condition; a tighter callout adds machining and

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