1、DEUTSCHE NORM March 2001 Steel hexalobular socket head cap screws with large driving feature DIN 34802 - ICs 21.060.1 O Zylinderschrauben mit groem Innensechsrund In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been use
2、d throughout as the decimal marker. Foreword This standard has been prepared by Technical Committee Schrauben mit Innenantrieb of the Normen- ausschuss Mechanische Verbindungselemente (Fasteners Standards Committee). A large driving feature facilitates tightening of the screw and provides for a more
3、 effective use of the drive machinery. In addition, a large driving feature lessens the likelihood of tolerances being exceeded in screws with a zinc flake coating. Hexalobular socket head cap screws with a driving feature of a size suitable for general purposes are dealt with in DIN EN IS0 14579*).
4、 All dimensions are in millimetres. 1 Scope This standard specifies dimensions and technical delivery conditionsfor M5 to M20 steel hexalobular socket head cap screws with large driving feature, of property classes 8.8, 10.9 and 12.9, and product grade A. 2 Normative references This standard incorpo
5、rates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publications apply to
6、 this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. DIN 4000-2 Tabular layouts of article characteristics for bolts, screws and fit bolts DIN EN 20225 Bolts, screws, studs and nuts - Symbols and desi
7、gnations for dimensioning (IS0 225 : 1983) DIN EN 26157-3 Fasteners - Surface discontinuities - Part 3: Bolts, screws and studs for special requirements (IS0 61 57-3 : 1988) DIN EN IS0 898-1 Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1 : Bolts, screws and studs (I
8、S0 898-1 : 1999) DIN EN IS0 3269 Fasteners -Acceptance inspection (IS0 3269 : 2000) DIN EN IS0 4042 Fasteners - Electroplated coatings (IS0 4042 : 1999) DIN EN IS0 4753 Fasteners - Ends of parts with external IS0 metric screw thread (IS0 4753 : 1999) DIN EN IS0 4759-1 Tolerances for fasteners - Part
9、 1 : Bolts, screws, studs and fit bolts - Product grades A, B and C (IS0 4759-1 : 2000) DIN EN IS0 10664 Hexalobular internal driving feature for bolts and screws (IS0 10664 : 1999) DIN EN IS0 10683 Fasteners - Non-electrically applied zinc flake coatings (ISO/DIS 10683 : 1999)*) *) Currently at dra
10、ft stage. Continued on pages 2 to 6. Translation by DIN-Sprachendienst. In case of doubt, the German-language original should be consulted as the authoritative text. No pari of this translation may be reproduced without the prior permission of Y Deutsches Institut fr Normung e. V., Berlin. Beuth Ver
11、lag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN 34802 : 2001 -0 English price group 06 Sales No. 0106 08.01 Page 2 DIN 34802 : 2001 -03 DIN EN IS0 14579 Hexalobular socket head cap screws (ISO/DIS 14579 : 1999)*) DIN IS0 261 IS0 general
12、purpose metric screw threads -General plan (IS0 261 : 1998) DIN IS0 965-1 IS0 general purpose metric screw threads - Tolerances - Part 1 : Principles and basic data DIN IS0 965-2 IS0 general purpose metric screw threads - Tolerances - Part 2: Limits of sizesfor general purpose external and internal
13、screw threads - Medium quality (IS0 965-2 : 1998) IS0 8992 : 1986 Fasteners -General requirements for bolts, screws, studs and nuts (IS0 965-1 : 1998) 3 Dimensions Screw dimensions shall be as given in figure 1 and table 1 See DIN EN 20225 for symbols (except dimension dkc). Detail X Maximum underhe
14、ad fillet 4 max = 1 17 rmax For r, see table 1. Key to figure 1) End chamfered (cf. DIN EN IS0 4753). 2) Length of incomplete thread, u: 2 P maximum. 3) d, applies if values of Ismin are specified. 4) Top edge of head rounded or chamfered (optional). 5) Bottom edge of head may be rounded or chamfere
15、d to d, but in every case shall be free from burrs. 6) Datum ford,. Figure 1: Screw dimensions (notation) *) Currently at draft stage. Page 3 DIN 34802 : 2001 -03 Table 1: Screw dimensions Thread size (d) max. min. (Ik max. min. 4 if max. max. min. li r min 1 max. dw min. u min. max. min. Socket No.
16、 Hexalobular socket A *) dkc t min. =or footnotes, see page 4. ) Auxiliary dimension. (con t i nu ed) Page 4 DIN 34802 : 2001 -03 Table 1 (concluded) Threadsize (d) I M5 I M6 I M8 I MID I MI2 I (M14)4) I MI6 I M2D 1 3, I Shank length, l, and grip length, 1, “nq 1 size min. rnax. 12 I 11,65 1 12.35 1
17、6 I 15,65 1 16,351 30 I 29S8 I 30,42 35 34,5 353 40 395 40,5 45 44,s 45,5 50 49,5 50,5 55 54,4 55,6 60 59,4 60,6 65 64,4 65,6 70 69,4 70,6 80 79,4 80,6 * 100 99,3 100,7 130 1129,2 I130,8 160 1159,2 I160,8 180 1179,2 I180,8 200 1199,075 I 200,925 10,75 17 5,s 13 I 15,75 22 20,75 27 25,75 32 30,75 37
18、35,75 42 45,75 52 1 1 1 1 1 1 1 1 30,5 38 25,251 34 20 30 16 40,5 48 35,25 44 30 40 26 50,5 58 45,25 54 40 50 36 80 90 76 86 653 78 90 100 86 96 755 88 l) Thread pitch. 2, For lengths below dashed line. 3) The range of commercially available lengths is between the stepped lines. Screws with lengths
19、above the dashed line are threaded to the head, to within 3 P. For lengths below that line, 1, and 1, are to be calculated using the following equations: g max = 1nom - b; 4 min = 1g max - 5 P. 4) Use of this size should be avoided. Page 5 DIN 34802 : 2001 -03 4 Technical delivery conditions Table 2
20、: Technical delivery conditions Material As specified in General reauirements Tolerances Thread As specified in Mechanical Property class properties As specified in Limit deviations Product grade and geometrical to I eran ces As specified in As specified in Hexalobular socket Surface finish Acceptan
21、ce inspection Steel IS0 8992. 5g6g for property class 12.9; for other property classes: 6g. DIN IS0 261, DIN IS0 965-1, and DIN IS0 965-2. 8.8, 10.9, and 12.9. DIN EN IS0 898-1. A DIN EN IS0 4759-1 DIN EN IS0 10664. As processed. DIN EN IS0 4042 shall apply with regard to electroplating. DIN EN IS0
22、10683 shall apply with regard to zinc flake coatings. If other finishes are required, these shall be agreed between customer and supplier. DIN EN 26157-3 shall apply with regard to surface discontinuities. As specified in DIN EN IS0 3269. 5 Designation Designation of an M1 O steel hexalobular socket
23、 head cap screw, with a nominal length, 1, of 60 mm, of property class 10.9: The DIN 4000-2-1.2 tabular layout of article characteristics shall apply to screws covered in this standard. Screw DIN 34802 - MI O 60 - 10.9 6 Marking Screws shall be marked as specified in DIN EN IS0 898-1, the marking (manufacturers mark) being applied to the face of diameter d, (cf. figure l), where possible. Page 6 DIN 34802 : 2001 -03 Appendix A Mass of carbon steel screws Table A.l Table A.l gives the approximate mass of steel screws of commercial lengths for information.
