GB/T 5780-2016 English PDF (GB/T5780-2016)

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GB/T 5780-2016: Hexagon head bolts -- Product grade C
GB/T 5780-2016
Hexagon head bolts - Product grade C
ICS 21.060.10
J13
National Standards of People's Republic of China
Replacing GB/T 5780-2000
Hex head bolt C grade
(ISO 4016.2011, MOD)
Issued on. 2016-02-24
2016-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is one of the national series of standards "hex head bolt," The series includes.
--- GB/T 27 hex head bolt reinforcing rods;
--- GB/T 28 hex-head screw bolt hole reinforcing bars;
--- GB/T 29.1 hexagonal head bolts groove;
--- GB/T 29.2 hexagonal head, cross recessed bolt;
--- GB/T 31.1 hexagon head bolts with;
--- GB/T 31.2 hexagon head bolts with shank Class B;
--- GB/T 31.3 hexagon head bolts with fine teeth A and class B;
--- GB/T 32.1 hexagon head bolt holes A and class B;
--- GB/T 32.2 hexagon head with holes bolt shank Class B;
--- GB/T 32.3 hexagon head bolts with wire holes tooth A and class B;
--- GB/T 5780 C Hexagon head bolts level;
--- GB/T 5781 Hexagon head bolts - Full thread Class C;
--- GB/T 5782 Hexagon head bolts;
--- GB/T 5783 Hexagon head bolts - Full thread;
--- GB/T 5784 hex head bolt shank Class B;
--- GB/T 5785 Hexagon head bolts with fine teeth;
--- GB/T 5786 Hexagon head bolts with fine teeth the whole thread.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 5780-2000 "hex head bolts C class", compared with the GB/T 5780-2000, the main technical change
as follows.
--- Delete "For other technical requirements, GB/T 3098.1 and GB/T 3103.1) Select." (Chapter 1 of the 2000 edition);
--- Reference standard unified thread GB/T 193, GB/T 9145 (Chapter 2);
--- Deleted by selecting the manufacturer to allow the manufacture of pocket type (Fig. 1);
--- Delete 3.6 (Table 3);
--- Increase in non-electrolytic zinc flake coating technology required by the GB/T 5267.2 (Table 3).
This standard uses redrafted law revision using ISO 4016.2011 "hex head bolts - Product grade C" (in English).
This standard and ISO 4016.2011 technical differences and their reasons are as follows.
--- Delete ISO 4016 stipulated "For other technical requirements, ISO 965-1 and ISO 4759-1 in the selection." (Chapter 1),
Not part of this standard;
--- Normative reference document, instead of using our standards with international standards (Chapter 2), increase the reference GB/T 90.2 (Table 3), GB/T 193
(Table 3), GB/T 9145 (Table 3) and GB/T 1237 (5.1), the deletion of ISO 724, ISO 965-1 references to conform to our country
Fasteners basic standards;
--- Increase in packaging technology requirements (Table 3), to meet our basic standard fasteners;
--- Modify tag example is a simplified markup example (5.2), to comply with the provisions of GB/T 1237's.
This standard also made the following editorial changes.
--- Delete ISO 4016 Table 3 footnote. "a level in line with the provisions of other properties of ISO 898-1." (Table 3);
--- Delete references given in ISO 4016.
The standard proposed by China Machinery Industry Federation.
This standard by the National Standardization Technical Committee fasteners (SAC/TC85) centralized.
This standard is drafted by. Productivity Promotion Center in the machine.
Participated in the drafting of this standard. Wenzhou Shun Tak Power Parts Co., Ltd., Zhejiang Haili Co., Ltd., Zhejiang CIQ detection technology
Limited.
This standard by the National Standardization Technical Committee Secretariat responsible for the interpretation of fasteners.
This standard replaces the standards previously issued as follows.
--- GB 5-1958, GB 5-1966, GB 5-1976;
--- GB/T 5780-1986, GB/T 5780-2000.
Hex head bolt C grade
1 Scope
This standard specifies the type size C grade hex head bolt, technical conditions and marking.
This standard applies to thread sizes of M5 ~ M64, property class 4.6 and 4.8, product grade C grade hex head bolts.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 90.1 fasteners acceptance inspection (GB/T 90.1-2002, ISO 3269.2000, IDT)
GB/T 90.2 Fasteners marking and packaging
GB/T 193 series ordinary thread diameter and pitch (GB/T 193-2003, ISO 261.1998, MOD)
GB/T 1237 fasteners labeling method (GB/T 1237-2000, eqvISO 8991. 1986)
GB/T 3098.1 Mechanical properties of fasteners Bolts, screws and studs (GB/T 3098.1-2010, ISO 898-1.2009,
MOD)
GB/T 3103.1 Tolerances for fasteners - Bolts, screws and nuts (GB/T 3103.1-2002, idtISO 4759-1.2000)
GB/T 5267.1 fasteners plating layer (GB/T 5267.1-2002, ISO 4042.1999, IDT)
GB/T 5267.2 fasteners non-electrolytic zinc flake coating (GB/T 5267.2-2002, ISO 10683.2000, IDT)
GB/T 5276 Fasteners Bolts, screws, studs and nuts - Symbols and designations size (GB/T 5276-2015, ISO 225.
2010, MOD)
GB/T 5781 Hexagon head bolts - Full thread C-class (GB/T 5781-2016, ISO 4018.2011, MOD)
GB/T 9145 common thread moderate accuracy, preferably series limit size (GB/T 9145-2003, ISO 965-2.1998,
MOD)
GB/T 16938 Fasteners Bolts, screws, studs and nuts - General technical conditions (GB/T 16938-2008, ISO 8992.
2005, IDT)
3 Dimensions
Type size bolt of Figure 1 and Table 1, Table 2.
Size code and labeling should be consistent with GB/T 5276.
aβ = 15 ° ~ 30 °.
b No specific requirements of the end.
c incomplete thread length u≤2P.
ddw arbitration reference.
e allows gasket surface type.
figure 1
Table 1 Preferred thread size in millimeters
Thread Size d M5 M6 M8 M10 M12 M16 M20
Pa 0.8 1 1.25 1.5 1.75 2 2.5
b Reference
b 16 18 22 26 30 38 46
c 22 24 28 32 36 44 52
d 35 37 41 45 49 57 65
c max 0.5 0.5 0.6 0.6 0.6 0.8 0.8
da max 6 7.2 10.2 12.2 14.7 18.7 24.4
ds
max 5.48 6.48 8.58 10.58 12.7 16.7 20.84
min 4.52 5.52 7.42 9.42 11.3 15.3 19.16
dw min 6.74 8.74 11.47 14.47 16.47 22 27.7
e min 8.63 10.89 14.2 17.59 19.85 26.17 32.95
Nominal 3.5 4 5.3 6.4 7.5 12.5 10
max 3.875 4.375 5.675 6.85 7.95 10.75 13.4
min 3.125 3.625 4.925 5.95 7.05 9.25 11.6
kwe min 2.19 2.54 3.45 4.17 4.94 6.48 8.12
r min 0.2 0.25 0.4 0.4 0.6 0.6 0.8
Nominal = max 8.00 10.00 13.00 16.00 18.00 24.00 30.00
min 7.64 9.64 12.57 15.57 17.57 23.16 29.16
l ls and lgf
Nominal min max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
25 23.95 26.05
30 28.95 31.05
35 33.75 36.25
40 38.75 41.25
45 43.75 46.25
50 48.75 51.25
55 53.5 56.5
60 58.5 61.5
65 63.5 66.5
1,014,712 fold above specifications recommended GB/T 5781
20,241,722 11.75 18
25,292,227 16.75 23 11.5 19
30,342,732 16.5 21.75 28 24
32 37 21.5 29 26.75 33 16.25 25
37 42 26.5 34 31.75 38 21.25 30
36.75 43 26.25 31.5 39 351 727
Table 1 Preferred thread size in millimeters
Thread Size d M5 M6 M8 M10 M12 M16 M20
l ls and lgf
Nominal min max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
70 68.5 71.5
80 78.5 81.5
90 88.25 91.75
100 98.25 101.75
110 108.25 111.75
120 118.25 121.75
200 195.4 204.6
220 215.4 224.6
240 235.4 244.6
260 254.8 265.2
280 274.8 285.2
300 294.8 305.2
320 314.3 325.7
340 334.3 345.7
360 354.3 365.7
380 374.3 385.7
400 394.3 405.7
420 413.7 426.3
440 433.7 446.3
460 453.7 466.3
480 473.7 486.3
500 493.7 506.3
41.75 48 31.25 36.5 44 402 232
58 51.75 54 41.25 46.5 503 242 21.5 34
64 51.25 56.5 604 252 31.5 44
74 61.25 66.5 705 262 41.5 54
71.25 806 272 51.5 64
81.25 907 282 61.5 74
7686 65.5 78
8696 75.5 88
96 106 85.5 98
106 116 95.5 108
115.5128
135.5148
Table 1 (continued) millimeters
Thread size d M24 M30 M36 M42 M48 M56 M64
Pa 3 3.5 4 4.5 5 5.5 6
b Reference
b 54 66 - - - - -
c 60 72 84 96 108 - -
d 73 85 97 109 121 137 153
c max 0.8 0.8 0.8 1 1 1 1
da max 28.4 35.4 42.4 48.6 56.6 67 75
ds
max 24.84 30.84 37 43 49 57.2 65.2
min 23.16 29.16 35 41 47 54.8 62.8
dw min 33.25 42.75 51.11 59.95 69.45 78.66 88.16
e min 39.55 50.85 60.79 71.3 82.6 93.56 104.86
Nominal 15 18.7 22.5 26,303,540
max 15.9 19.75 23.55 27.05 31.05 36.25 41.25
min 14.1 17.65 21.45 24.95 28.95 33.75 38.75
kwe min 9.87 12.36 15.02 17.47 20.27 23.63 27.13
r min 0.8 1 1 1.2 1.6 2 2
Nominal = max 36 46 55.0 65.0 75.0 85.0 95.0
min 35 45 53.8 63.1 73.1 82.8 92.8
l ls and lgf
Nominal min max lsmin
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
25 23.95 26.05
30 28.95 31.05
35 33.75 36.25
40 38.75 41.25
45 43.75 46.25
50 48.75 51.25
55 53.5 56.5
60 58.5 61.5
65 63.5 66.5
70 68.5 71.5
80 78.5 81.5
90 88.25 91.75
Fold above specifications recommended GB/T 5781
Table 1 (continued) millimeters
Thread size d M24 M30 M36 M42 M48 M56 M64
l ls and lgf
Nominal min max lsmin
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
100 98.25 101.75
110 108.25 111.75
120 118.25 121.75
200 195.4 204.6
220 215.4 224.6
240 235.4 244.6
260 254.8 265.2
280 274.8 285.2
300 294.8 305.2
320 314.3 325.7
340 334.3 345.7
360 354.3 365.7
380 374.3 385.7
400 394.3 405.7
420 413.7 426.3
440 433.7 446.3
5166 36.5 54
5570 40.5 58
50.5
60.5
85 100 70.5 885 676
105,120 90.5 1,087,696 61.5 84
140110.5128 96 116 125 81.5 1,046,792
147117.5135 103 123 132 88.5 1,117,499
167137.5155 143108.5131 152 123 94 119 75.5 103
157.5175 163128.5151 114 139 143 95.5 12377107
134 177.5195 163 183148.5171 159115.5143 97127
197.5215 183 203168.5191 179135.5163 117 147 154
223188.5211 199155.5183 137 167 203 174
243208.5231 219175.5203 157 187 223 194
263228.5251 239195.5223 177 207 243 214
248.5271 259215.5243 197 227 234
268.5291 279235.5263 217 247 254
288.5311 299255.5283 237 267 274
319275.5303 257 287 294
460 453.7 466.3
480 473.7 486.3
500 493.7 506.3
339295.5323 277 307 314
359315.5343 297 327 334
335.5363 317 347
Note. The preferred length is determined by lsmin and lgmax.
aP --- pitch.
bl nominal ≤125mm.
c 125mm \u003cl公称≤200mm。
dl nominal> 200mm.
ekwmin = 0.7kmin.
flgmax = l nominal -b.
lsmin = lgmax-5P.
Table 2 Non-preferred thread size in millimeters
Thread size d M14 M18 M22 M27 M33
Pa 2 2.5 2.5 3 3.5
b Reference
b 34 42 50 60 -
c 40 48 56 66 78
d 53 61 69 79 91
c max 0.6 0.8 0.8 0.8 0.8
da max 16.7 21.2 26.4 32.4 38.4
ds
max 14.7 18.7 22.84 27.84 34
min 13.3 17.3 21.16 26.16 32
dw min 19.15 24.85 31.35 38 46.55
e min 22.78 29.56 37.29 45.2 55.37
Nominal 8.8 11.5 141 721
max 9.25 12.4 14.9 17.9 22.05
min 8.35 10.6 13.1 16.1 19.95
kwe min 5.85 7.42 9.17 11.27 13.97
r min 0.6 0.6 0.8 1 1
Nominal = max 21.00 27.00 34 41 50
min 20.16 26.16 33 40 49
l ls and lgf
Nominal min max lsmin
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
60 58.5 61.5
65 63.5 66.5
70 68.5 71.5
80 78.5 81.5
90 88.25 91.75
100 98.25 101.75
2131 fold above the recommended specification GB/T 5781
3646 25.5 38
4656 35.5 48 27.5 40
5666 45.5 58 37.5 50
Table 2 (Continued) millimeters
Thread size d M14 M18 M22 M27 M33
l ls and lgf
Nominal min max lsmin
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
110 108.25 111.75
120 118.25 121.75
6676 55.5 68 47.5 603 550
7686 65.5 78 57.5 704 560
80 90 69.5 82 61.5 744 964 34.5 52
200 195.4 204.6
220 215.4 224.6
240 235.4 244.6
260 254.8 265.2
280 274.8 285.2
300 294.8 305.2
320 314.3 325.7
340 334.3 345.7
360 354.3 365.7
380 374.3 385.7
400 394.3 405.7
420 413.7 426.3
440 433.7 446.3
460 453.7 466.3
480 473.7 486.3
500 493.7 506.3
90 100 79.5 92 71.5 845 974 44.5 62
89.5 102 81.5 946 984 54.5 72
99.5 112 91.5 1,047,994 64.5 82
119.5 132 84.5 102 111.5 12,499,114
131.5 144 119 134 104.5 122
138.5 151 126 141 111.5 129
146 161 131.5 149
166 181 151.5 167
171.5 189
191.5 209
211.5 229
Table 2 (Continued) millimeters
Thread size d M39 M45 M52 M60
Pa 4 4.5 5 5.5
b Reference
B - - - -
c 90 102 116 -
d 103 115 129 145
c max 1 1 1 1
da max 45.4 52.6 62.6 71
ds
max 40 46 53.2 61.2
min 38 44 50.8 58.8
dw min 55.86 64.7 74.2 83.41
e min 66.44 76.95 88.25 99.21
Nominal 25,283,338
max 26.05 29.05 34.25 39.25
min 23.95 26.95 31.75 36.75
kwe min 16.77 18.87 22.23 25.73
r min 1 1.2 1.6 2
Nominal = max 60.0 70.0 80.0 90.0
min 58.8 68.1 78.1 87.8
l ls and lgf
Nominal min max lsmin
lg
max
ls
min
lg
max
ls
min
lg
max
ls
min
lg
max
60 58.5 61.5
65 63.5 66.5
70 68.5 71.5
Fold above specifications recommended GB/T 5781
80 78.5 81.5
90 88.25 91.75
100 98.25 101.75
Table 2 (Continued) millimeters
Thread size d M39 M45 M52 M60