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不銹鋼美制內六角螺絲 英制內六角螺絲1/4-20,5/16-18, 3/8-16, 7/16-14, 1/2-13 5/8-11, 3/4-10, 7/8-9

發布日期:2018-03-24 瀏覽次數:242

304不銹鋼美制內六角螺絲、不銹鋼美制圓柱頭內六角螺釘、美制細牙內六角螺釘、英制內六角螺釘

南京比爾沃五金公司專業生產各種美制牙螺栓、美制牙螺母。不銹鋼外六角美制螺栓、不銹鋼內六角美制螺栓、碳鋼內六角美制螺栓、碳鋼外六角美制螺栓、美制牙內六角緊定、美制牙半圓頭內六角螺釘、圓柱頭內六角美制螺絲、沉頭內六角美制螺釘、十字盤頭美制螺釘、十字沉頭美制螺釘、不銹鋼美制六角螺母、碳鋼美制六角螺母、美制尼龍鎖緊螺母。


美制內六角螺栓常用規格有:

美制粗牙 #8-32、#10-24,12-24,1/4-20,5/16-18, 3/8-16, 7/16-14, 1/2-13 ,9/16-12,5/8-11, 3/4-10, 7/8-9, 1-8

美制細牙:1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20, 9/16-18, 5/8-18, 3/4-16, 7/8-14, 1-12

螺紋代號:粗牙系列UNC, 細牙系列UNF,特細牙系列UNEF,定螺距系列UN,

標注方法:螺紋直徑—每英寸牙數系列代號—精度等級 示例:粗牙系列 3/8—16 UNC—2A

細牙系列 3/8—24 UNF—2A   特細牙系列 3/8—32 UNEF—2A

定螺距系列 3/8—20 UN—2A

第一位數字3/8表示螺紋外徑,單位為英寸,轉換為米制單位mm要乘以25.4,即3/8×25.4=9.525mm;第二、三位數字16、24、32、20為每英寸牙數(在25.4mm長度上的牙數);第三位以后的文字代號UNC、UNF、UNEF、UN為系列代號,最后兩位2A為精度等級。UNC:統一粗牙螺紋


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