Thread Taper Inspection-Taper Gages
Thread Taper is the change in pitch diameter over the length of a connection, typically designated in metric. For all rotary shouldered connections, measuring thread taper is not only an industry wide practice; it is an API mandated inspection.
During the manufacturing process, taper must be accurately measured and quantified to avoid mismatched tapers. When under a service load, mismatched tapers between pins and boxes diminish proper thread engagement resulting in reduced connection performance.
| P/N | Model | Measuring Range | Travel | Resolution |
| ETG1129-RSC | JZW5 | 0″~10″, External Taper,RSC | 0～1 in | 0.0005in |
| ITG1129-RSC | JZN06Z | 1-1/2″~9″, Internal Taper,RSC | 0～1in | 0.0005in |
External and Internal taper gages inspect variation in connection taper. External and Internal taper gages are shipped with .072” diameter contact points unless otherwise requested. Higher resolution indicators are available.
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