螺栓 螺丝和螺母 - 外部扳手 公制螺纹 - 设计参数

To fully define the following requirements for bolts with spline and hexagon heads of strength class up to but not including 1250 MPa:aHead dimensions (see 3.1 )bShank dimensions (see 3.2 )cGeometric control (see 3.3 )dSurface texture (see 3.4 )This document is based on one class of thread after all processing, including coating or plating, has been completed as follows: tolerance class 4h6h.For particulars of thread, see AS1370. For thread runout and lead threads, see AS3062.To fully define the following requirements for nuts with spline, plain hexagon and castellated configurations of strength class up to and including 1100 MPa:aNut dimensions (see 4.1 )bGeometric control (see 4.2 )cSurface texture (see 4.3 )For particulars of threads, see AS1370.This document is based on the following classes of internal threads after all processing, including coating or plating, has been completed:Tolerance class 4H6H for sizes up to and including 5 mmTolerance class 4H5H for size 6 mm and largerFor particulars of thread, see AS1370.Cross Reference: ANSI/B4.2,ANSI/B46.1,ANSI/Y14.36,AS1370,AS3062,AS3063,MA1549