美规螺丝常见规格与标示

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1、美规螺丝常见规格与标示--------------------------------------------------------------------------------分类：*点击：5786相关：美规螺丝常见规格与标示美规螺丝a.一般以番号标示,如#2-56,#4-40,#6-32,#8-32,#10-24…etc.b.或以英制外径表示,如0.086-56,0.112-40,0.138-32,0.164-32,0.190-24…etc.Ex:632–8–PPB:FinishCode:外观处理规格HeadCode:头

2、部外型DriveCode:头部剖沟,特征型号LengthCode:螺丝长度ThreadCode:螺丝型号B-1:ThreadCode:螺丝型号一般常用规格如下:a.#2-56(0.086-56):2番56牙b#4-40(0.112-40):4番40牙c.#6-32(0.138-32):6番32牙d.#8-32(0.164-32):8番32牙e.#10-24(0.190-24):10番24牙***牙为每吋之牙数.***B-2:LengthCode:螺丝长度美规螺丝长度须经换算,才是公制mm尺寸.换算公式:(LengthCode/3

3、2)x25.40=公制长度mmB-3,B-4,B-5:标示方式与公制相同.NumberCapScrewsScrewSizeDecimalEquiv.HexKeyScrewHeadCounterboreCountersinkDiam,60°(in)ClearanceDrillsDiam.(in)Height(in)Diam.(in)Depth(in)Norm.FitCloseFitNo.00.0600.0500.0960.0601/80.0600.074#49#51No.10.0731/160.1180.0735/320.0730

4、.087#43#46No.20.0865/640.1400.0863/160.0860.102#363/32"No.30.0995/640.1610.0997/320.0990.115#31#36No.40.1123/320.1830.1127/320.1120.130#291/8"No.50.1253/320.2050.1251/40.1250.145#239/64"No.60.1387/640.2260.1389/320.1380.158#18#23No.80.1649/640.2700.1645/160.1640.188#

5、10#15No.100.1905/320.3120.1903/80.1900.218#2#5No.120.2165/320.3450.21613/320.216 1/4"15/64"FractionalCapScrewsScrewSizeDecimalEquiv.HexKeyScrewHeadCounterboreCountersinkDiam,60°(in)ClearanceDrillsDiam.(in)Height(in)Diam.(in)Depth(in)Norm.FitCloseFit1/4"0.2503/160.375

6、0.2507/160.2500.2789/32"17/64"5/16"0.3131/40.4690.31317/320.3130.34611/32"21/64"3/8"0.3755/160.5630.3755/80.3750.41513/32"25/64"7/16"0.4383/80.6560.43823/320.4380.48315/32"29/64"1/2"0.5003/80.7500.50013/160.5000.55217/32"33/64"9/16"0.5637/160.8440.56329/320.563 39/64

7、"37/64"5/8"0.6251/20.9380.62510.6250.68921/32"41/64"3/4"0.7505/81.1250.7501-3/160.7500.82825/32"49/64"7/8"0.8753/41.3130.8751-3/80.8750.96329/32"57/64"1"1.0003/41.5001.0001-5/81.0001.1001-1/32"1-1/64"1-1/8"1.1257/81.6881.1251-13/161.125 1-11/64"#261-1/4"1.2507/81.875

8、1.25021.2501.3701-5/16"1-9/32"1-1/2"1.50012.2501.5002-3/81.5001.6401-9/16"1-17/32"1-3/4"1.7501-1/42.6251.7502-3/41.7501.9101-13/16"