TERMINOLOGY
Short Form Certification (Straight Threads)
Certificate indicates required and actual pitch diameter only.
Long Form Certification (Straight Threads)
Certificate indicates required and actual measurements of pitch diameter, major diameter, minor diameter, flank angles and lead where they apply.
Short Form Certification (Taper Pipe Threads)
Thread Plug - check P.D. at gage point and basic step.
Thread Ring - check stand off to plug gage.
Plain Taper Plug - check size at small end and basic step.
Plain Taper Ring - check size at large end of basic step.
Long Form Certification (Taper Pipe Threads)
Thread Plug - check P.D. at gage point, O.D. at small end, lead, angles, taper and steps.
Thread Ring - check standoff to plug gage, angles, lead and minor diameter.
Plain Taper Plug - check size at small end, taper and steps.
Plain Taper Ring - check size at large end and steps.
Note: Call for quotation on inspection and calibration requirements not listed. First article inspection is quoted on individual order.
CSIS Limitation of Liability: Services are performed on equipment that is traceable to the National Institute of Standards and Technology. CSIS is responsible for inspection service results only at the time of service, utilizing generally accepted industry procedures and under the environmental and other conditions of inspection at that time in its facility. As dimensions of the product are affected by usage and varying environmental changes CSIS makes no claims about customer product or property once it leaves CSIS environment. Once, the product or other property leaves CSIS facility, customer assumes total responsibility for assuring that it continues to meet customer specifications through appropriate quality assurance procedures.
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