BS 4168-1-1981 Hexagon socket screws and wrench keys metric series Part 1 Specification for hexagon socket head cap screws
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4E25FF56865A40E1A7599CAF6D58BD0C |
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0.53 |
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页数： |
11 |
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日期： |
2024-6-23 |
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*BHSlbas *1PART dl ■ Lbm“bb耳 0E07bS7 3 ■,BS 4168: Part 1:1981,UDC 621.882.215.6 + 621.883.3,Hexagon socket screws and wrench keys:,metric series,Part 1. Specification for hexagon socket head cap screws,Vis a six pans creux et cles males pour six pans: serie metrique,Partie 1, Specげication des vis a tete cylindrique a six pans creux,Innensechkantschrauben und Steckschlussel: metrische Reihe,Teil 1. Spezifikation fur Innensechkantschrauben,British Standards Institution,Copyright by the British Standards Institution,Fri Jul 21 17:13:57 2000,BSI PART*1 fil ■ lbm4bbe1 0207bfl6 5,BS 4168 : Part 1 : 1981,Contents,Page Page,Foreword Inside front cover Tables,Cooperating organizations Back cover 1, Dimensions 2,2. Specifications and reference standards 4,Specification,1. Scope 1 Figure,2. References 1 1, Cap screws 1,3. Dimensions 1,4. Specifications and reference standards 4,6. Designation 4,Foreword,This British Standard has been prepared under the direction,of the Mechanical Engineering Standards Committee and,forms part of the revision of the 1967 edition. It is one of a,series of specifications, of which the full list is as follows.,Part 1. Specification for hexagon socket head cap,screws,Part 2. Specification for hexagon socket set screws,with flat point,Part 3. Specification for hexagon socket set screws,with cone point,Part 4. Specification for hexagon socket set screws,with dog point,Part 5. Specification for hexagon socket set screws,with cup point,Part 6.* Specification for hexagon socket button heacT,screws,Part 7.* Specification for hexagon socket shoulder,screws,Part 8.* Specification for hexagon socket countersunk,head screws,Part *9, Specification for wrench keys,This Part of this standard is based on ISO 4762-1977,'Hexagon socket head cap screws - Product grade A',published by the International Organization for,Standardization (ISO), but for steel cap screws, only,mechanical property class 12.9 is specified. ___,"Although the tolerances on some features specified in this <,standard differ from those specified in BS 4168 ： 1967,',screws complying with this standard are generally,^interchangeable with screws complying with BS4168 :,1967, 二,j fr in special cases, requirements other than those listed in :,'this standard are necessary, it is recommended that they ；, should be selected from the standards referred to in ?,clause 4.,For ease of production it has been found convenient to,- reproduce the figure and table from ISO 4762, with,alterations, for figure 1 and table 1 of this standard.,Certain conventions are not identical with those used in,British Standards; attention is especially drawn to the .,following:,The comma has been used throughout as a decimal marker,In British Standards it is current practice to use a full point,on the baseline as the decimal marker.,*ln course of preparation.,Copyright by the British Standards Institution,Fri Jul 21 17:14:32 2000,3SI PART*1 fll ?、ト己“L>M 0207bfl5 7 ■,BS 4168 : Part 1 : 1981,British Standard,Hexagon socket screws and wrench keys: metric series,Part 1. Specification for hexagon socket head cap screws,1. Scope,This British Standard specifies requirements for hexagon socket head cap screws with ISO metric threads and diameters,from 1.6 mm up to and including 36 mm.,2. References,The titles of the standards publications referred to in this standard are listed on the inside back cover.,3. Dimensions,The dimensions of the cap screws shall be in accordance with figure 1 and table 1.,8,c,E,ニキ,Point chamfered or for,sizes M 4 and below,“as rolled',-,ニタ’,b (ref.),2 P max.,incomplete thread,A slight rounding or countersink,at the mouth of the socket--------,is permissible,ds applies to positive values of /g.,A,A,Bottom edge of head,may be rounded or chamfered,to dw but in every case must be,free of burrs,Permissible,alternative form,of socket,Top of head may be radiused,or chamfered as shown at the；,一 gptlon of the manufacturer.,r max.=,ケ max.,Maximum underhead fillet,max - % maベ,2,rmin. see table,'NOTE. For broached sockets which are at the maximum limit of size, the overcut resulting from,jfriHing shall not exceed 20 % of the length of any flat of the socket/,Figure 1. Cap screws,Copyright by the British Standards Institution,Fri Jul 21 17:14:33 2000,BS4168 : Part 1 : 1981,BSI *BmStas *1PART ail ■ Lbm4bLicI OSOVb^O ヨ,Dimensions in millimetres,Table 1, Dimensions,Thread size d M 1,6 M 2 M2r5 M3 M4 M5 M6 M8,P 1) 0,35 0,4 645 0,5 0,7 0,8 1 1,25,b ref. 15 16 17 18 20 22 24 28,max. 2) 3 3,8 4,5 5,5 7 8,5 10 13,dk max. 3) 3,14 3,98 4,68 5,68 7,22 8,72 10,22 13,27,min. 2,86 3,62 4,32 5,32 6,78 8,28 9,78 12,73,da max. 2 2,6 3,1 3,6 4,7 ……
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