>> P.114
θθ02-33•AllowableerroroftheangleofanvilsθandspindletipsMetric(Unied)TypeWhitworth(Unified)HalfangleerrorαM1(U1)Pitch(mm),NominaldesignationofthreadsperinchM2(U2)M3(U3)M4(U4)M5(U5)M6(U6)W1W2W3W4W5W6W7W8W9W10±30'±30'±20'±20'±15'±15'±10'±10'±10'±10'Note:Thischartindicatesthedifferencebetweentheanglemadebyanvil’scontactfacesandspindle’saxesandthehalfanglewitherrorα.Metric/Unifiedθ=60°Whitworthθ=55°Technicaldescription•Anvils/spindletipsScrewThreadMicrometersSERIES326,126—InterchangeableAnvil/SpindleTipTypeRange(mm)0-2525-5050-7575-100100-125125-150150-175175-200200-225225-250250-275275-300b253245657993105118131144156169d396489.5115.1140.1165.1190214240265290314Unit:mm66.9ø1815225ø6.35DIMENSIONS18dbø3.5holesformountingtheinterchangeableanvilsandtipsSpecialPurposeMicrometers
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