RC,PT英式管用推拔螺紋( 絲攻VS鑽頭下孔徑表

型號 : RC,PT英式管用推拔螺紋(

英式管用推拔螺紋(RC,PT) Taper pipe thread

標稱 Nominalsize	鉆頭徑 Drill dia		有效螺紋部之長度最小內螺紋之內徑 Internal thread minor dia on (min) length of useful thread	基準長度最小內螺紋之內徑 Internal thread minordiaon(min) gaugelength
標稱 Nominalsize	使用絞刀之場合 Use with reamer	不使用絞刀之場合 Without reamer		基準長度最小內螺紋之內徑 Internal thread minordiaon(min) gaugelength
RC1/16-28	6.1	6.2	6.244	6.370
RC1/8-28	8.1	8.2	8.249	8.375
RC1/4-19	10.7	11.0	10.962	11.153
RC3/8-19	14.2	14.5	14.448	14.636
RC1/2-14	17.6	18.0	17.979	18.234
RC3/4-14	23.0	23.4	23.378	23.635
RC1-11	29.0	29.5	29.459	29.786
RC1 1/4-11	37.5	38.0	37.976	38.302
RC1 1/2-11	43.4	44.0	43.869	44.195
RC2-11	54.9	55.5	55.412	55.808
RC2 1/2-11	70.4	71.0	70.737	71.279
RC3-11	82.8	83.4	83.244	83.780
RC4-11	107.5	108.2	108.015	108.629

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