GB898-1988双头螺柱bm=1.25d

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1、中华人民共和国国家标准UDC胶1.朋2GB$98一T:]双头螺柱bm-1.25dDoubleendstuds-b。二1.25d代替GB898-76主题内容本标准规定了螺纹直径为M5一Md8,bm二1.25d的双头螺柱。引用标准GB196普通螺纹从木尺寸GB197普通螺纹公差与配合GB1167过渡配合螺纹GB2紧固件外螺纹零件的末端GB3098.1紧I',}件机械性能螺校、螺乍j、螺柱GB3098.6紧固件机械件能不锈钢畔校、螺钉、螺柱和螺母GB3103.1肾阴件公差螺枪、螺门和螺母GB5267螺纹紧Ya件电跳层GB5779.1紧IM]件表(h

2、i缺陷一螺栓、螺eI和螺柱一一般要求GB5779.3紧固件表面缺陷一螺栓、螺钉和螺柱一特殊要求GB1237紧固件的标记方法GB90紧固件脸收检查、标志与包装3尺寸尺寸如下图及表1、表2、表3所'J}03.1商品规格按图及表1规定。3.2通用规格按图及表2规定。3.3尽量不采用的规格按图及表3规定。勺亨一，辍1:q未端!_I构瑞一—一7，刃一一一巨一匕州一二一一.月末端按GB2规定;d,-螺纹中径(仅适用干B型)。国家机械工业委员会1988一01一2?批准1989一3一01实施GB888一公8表1.11门峨纹规格d}M5{M。!}M10}M12

3、I一公称}【8{10{}!{6mmln}5.40{7.2。}}11.10}14.10}}}Mo.}6.60}8.75{10.75}12.90{15.90{!26.05max}!}8}}}}d,mln}}5.7{{}11.57}}Xn〕日x{lb公称{min}max1615.1016.90(18)17.1018.90{102018.9521.0510(22)20.9523.05{一2523.9525.05了2吕、26.9529.051416{I一3028.9531.05!七32)30.75】33.25一163533.7536.252015(3N

4、)36.7539.252O25三偏38.7541.25弓〕43.7546.2518305〕48.7551.25(55夕53.556.53522C058.561.5(65)63.5}66.57063571.5(75)73.576.5一L6078.5一81.5(85)83.2586.75469088.2591.75l95)一}93.25}96.7510098.25101.75110108.25111.75120118.25121.75‘26一‘30’38_一130128.0132.01140138.0142.0.目.目~~.~.~‘-一~户叫‘.

5、，150148.0152.0~...~叫叫~.160158.0162.0170168.0172.0一52180178.0}..‘目.‘，.，.190187.7一192.3200，，7.:!022.3川一一一!44一注:①尽可能不采用括号内的规格。②P-粗牙螺距。③折线之间为商品规格范围。④当b一b.<5mm时，旋螺母一端应制成倒图端。⑤分V}QZ用翻牙妞的角汁洽夕会且廿388GB88.一S8表2n4m.户目M24M30M36M42M49螺纹规格38公称304552翻一36bm】nln28.95一43.7550.5058.50湘max31.05

6、.72546.2553.5061.50】们ax24364248d,m(r23.483209.4835.3841.3847.38XnlaX1.5尸1公称minma兀利.户.~.七目.38.7541.25一朽43.7546.253O48.7551.25(55)53.5056.506058.5061.50(65)63.5066.504苏7068.5071.50(75)73.507fi.508078.5081.50(85)83.2586.759O88.2591.75(95)93.2596.755410098.25101.75110108.25111.

7、75120118.25121.75130128.0132.0140138.0142.0目..目‘..150148.0152.0160158.4162060170168.0172.0180178.0182.0190187.7192.3200197.7202.3210207.7212.322021'..7222.3230227.7232.3240237.7242.3250247.7252.3.目‘.目.户..~260257.4262.6口勺..，叫.加~~.‘，.280277.4282.6300297.4302.6注:①尽可能不采用括号内的规格。

8、②P—粗牙螺距。③折线之间为通用规格范围。④当b一bm<5mm时，旋娜母一端应制成倒圆端。⑤允许采用细牙蜘Y和过渡配合螺纹.389GB二8一二表3mm娜纹规格dM1