GM X100-1998 螺纹精度标准(CH).pdf

VND.GMXLOO-ENGL1778700b3770033333T78H

IGENERALMOTORSENGINEERINGSTANDARDSIEngineeringI

METRICSCREWTHREADS公制螺纹X100

x100

3.2.1光面零件。除非图纸上另有规定，否则应根据ASMEB1.3M《尺

寸可接受性螺纹测量系统》第22系统确定平面光洁度零件的螺纹可

1范围。通用汽车各部门使用的公制螺纹公认文件如下：接受性，外螺纹公差为6g级，内螺纹公差为6g级。

1SCOPE.Therecognizeddocumentscoveringmetric3.2.1PlainFinishParts.Unlessotherwisespecifiedonthe

screwthreadsforusebyalidivisionsofGMshallbethefol-drawing,acceptabilityofscrewthreadsforplainfinishparts

lowing:shallbedeterminedbasedonSystem22,ASMEB1.3M-

ScrewThreadGagingSystemsforDimensionalAcceptability,

ASMEB1.3M-ScrewìkeadGagingSystemsforwithClass6gtoleranceapplyingtoexternalthreadsandClass

DimensionalAcceptabilityASMEB1.3M-尺寸可接受性的螺6Happlytointernalthreads.

纹测量系统

ASMEB1.13M-MetricScrewThreads-MProNe3.2.2CoatedParts.Unlessotherwisespecifiedonthedraw-

ASMEB1.13M——公制螺纹——M型ing,acceptabilityofscrewthreadsaftercoatingorplatingparts

ASMEB1