---貴陽高原礦山機械股份有限公司企業(yè)標準緊固件進廠檢驗規(guī)程目的規(guī)范及指導檢驗人員對緊固件的進廠檢驗工作，確保緊固件的質(zhì)量。適用范圍本規(guī)程適用于緊固件的進廠檢驗。檢驗依據(jù)標準GB/T5783《六角頭螺栓一全螺紋-A和B級》標準GB/T6170《1型六角頭螺母一A和B級》標準GB/T6171《1型六角頭螺母一細牙一A和B級》標準GB93《標準型彈簧墊圈》抽樣抽樣方法對于批量，按5%進行抽樣，如全部合格，則批件合格；其中有不合格者，加倍抽檢；仍有不合格，則該批不合格。檢驗內(nèi)容及方法供方資質(zhì)檢查檢查供方提供的產(chǎn)品質(zhì)量合格證書、合格的質(zhì)量保證體系證書。螺栓、螺母外觀、尺寸檢查用游標卡尺、鋼板尺和卷尺進行尺寸檢查應符合表1、表2、表3的規(guī)定。表面質(zhì)量檢查目測螺栓頭、螺母表面等級標識，螺栓、螺母的螺紋表面不允許有妨礙螺紋自由旋入的碰傷和毛刺；不允許有影響使用的雙牙尖，劃痕和扣不完整，不允許有影響使用的凹痕、毛刺、裂紋、斑疤、條痕和氧化皮，不允許有浮銹和燒傷。硬度試驗只用與于螺栓8.8級，用洛氏硬度機測量其硬度，測量值應符合dWM16HRC為22~32；d>M16HRC為25~35。墊圈外觀、尺寸檢查目測墊圈表面不允許有裂縫、浮銹和氧化皮。不允許有影響使用的縱向裂縫、凹痕、毛刺。用游標卡尺和臺秤檢查尺寸和重量，結(jié)果應符合表4的規(guī)定。貴陽高原礦山機械股份有限公司2013-04-10批準2013-04-15實施

彈性試驗標準型、輕型和重型墊圈應按5.4.2條進行彈性試驗，試驗后的自由高度應不小于1.67S（公稱尺寸）。先將彈簧墊圈置于臺虎鉗上，連續(xù)三次壓平。再用平墊圈隔開穿在螺栓上，擰緊螺母直至壓平。至少保持24小時，取下彈簧墊圈檢查其高度（H）。韌性試驗將墊圈夾于虎鉗和扳手之間，虎鉗和扳手之間的距離等于墊圈外徑的二分之一，將扳手向順時針方向緩慢扭轉(zhuǎn)至45°，不允許有裂縫。檢驗判定5.1~5.4條按4.1抽樣方法逐項檢查，全部滿足要求方為合格。

表1mm螺栓螺紋規(guī)格dM3M4M5M6M8M10M12amax1.52.12.433.754.55.25k公稱22.83.545.36.47.5Amin1.682.683.353.855.156.227.32max2.122.923.654.155.456.587.68Bmin3.263.765.066.117.21max3.744.245.546.697.79smax5.57810131618minA5.326.787.789.7812.7315.7317.73B7.649.6412.5715.5717.57長度L公稱產(chǎn)品等級ABminmaxminmax65.76.3687.78.388109.710.31010101211.612.4121212121615.616.416161616161817.618.418181818182019.620.42020202020202524.625.4252525252525253029.630.4303030303030303534.535.533.736.33535353535354039.40.538.741.3404040404040

54544.545.543.746.345454545455049.550.548.751.35050505050(55)54.455.653.556.3(55)(55)(55)(55)6059.460.658.561.560606060(65)64.465.663.566.5(65)(65)(65)7069.470.668.571.57070708079.480.678.581.58080809089.390.788.391.7909010099.3100.798.3101.7100100續(xù)表1mm螺栓螺紋規(guī)格dM16M20M24M30M36amax67.5910.512k公稱1012.51518.722.5產(chǎn)品等級Amin9.8212.2814.78max10.1812.7215.22Bmin9.7115.1514.6518.2822.08max10.2912.8515.3519.1222.92smax2430364655產(chǎn)品等級A23.6729.6735.384553.8B23.1629.1635長度L公稱產(chǎn)品等級ABminmaxminmax65.76.3

87.78.3109.710.31211.612.41615.616.42019.620.42524.625.43029.630.43534.535.533.736.3354039.540.538.741.340404040404544.545.543.746.345454545455049.550.548.751.350505050505554.455.653.556.555555555556059.460.658.561.560606060606564.465.663.566.565656565657069.470.668.571.570707070708079.480.678.581.580808080809089.390.788.391.7909090909010099.3100.798.3101.7100100100100100表2mm長度L公稱minmax8078.581.59088.391.710098.3101.7110108.3111.7120118.3121.7130128132140138142150148152160156164180176184200195.4204.6220215.4224.6

240235.4244.6260254.8265.2280274.8285.2300294.8305.2320314.3325.7340334.3345.7360357.3365.7380374.3385.7400394.3405.7420413.7426.3440433.7446.3460453.7466.3480473.7486.3500493.7506.3表3mm螺母螺紋規(guī)格DM6M8M10M12(M14)M16(M18)M20DXpM8X1M10X1M12X1.5M14X1.5M16X1.5M18X1.5M20X2mmax5.26.88.410.812.814.815.818Smax10131618212427301000個重量/kg2.325.6710.9916.3225.2834.1244.1961.9螺母螺紋規(guī)格DM24(M27)M30M36M42M48M56M64DXpM24X2M27X2M30X2M36X3M42X3M48X3M56X4M64X4mmax21.523.825.63134384551Smax36414655657585951000個重量/kg111.9168234.2370.6598.6957.314201912表4mm墊圈規(guī)格（螺紋大徑）dS(b)HmWminmax公稱minmaxminmax55.15.41.31.21.42.63.250.65

66.16.681.61.51.73.240.888.18.682.122.24.25.251.051010.210.92.62.452.575.26.51.31212.212.93.12.953.256.27.751.55(14)14.214.93.63.43.87.291.81616.216.94.13.94.38.210.252.05(18)18.219.044.54.34.7911.252.252020.221.0454.85.21012.52.5(22)22.523.345.55.35.71113.752.752424.525.565.86.212153(27)27.528.56.86.57.113.6173.43030.531.57.57.27.81518.753.75(33)33.534.78.58.28.81721.254.253636.537.798.79.31822.54.5注：1.盡可能不采用括號內(nèi)的規(guī)格；2.m應大于0表5規(guī)格mm22.5345681012(14)