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Functional thread rolls are manufactured in matched pairs offset by one-half pitch to allow them to sit in a thread’s helical path (groove). Sometimes inspectors or machinists are unsure if they have properly positioned the rolls in the correct helical path. To avoid such issues, simply use a blue Sharpie® to draw a line in […]
When inspecting external functional size on a straight thread (ACME, ISO Metric, UN, etc.), some have a tendency to force the RG-7000 external roll gage onto a part. Keep in mind overly aggressive placement can cause the roll to move or completely slip from the part. Sometimes, this can slam the gage and/or hands on […]
Functional Size Inspection Functional gauging takes into account the cumulative effects of diameter, lead, taper, flank angle and form error. Experience the same functionality of ring and plugs with the added benefit of accurately inspecting a range of sizes. Functional thread inspection gages, or GO/NO GO gages, measure thread diameters. These functional gages are adjustable […]