GB/T 41-2016 English PDF (GB/T41-2016)

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GB/T 41-2016: Hexagon nuts, style 1 -- Product grade C
GB/T 41-2016
Hexagon nuts, style 1.Product grade C
ICS 21.060.20
J13
National Standards of People's Republic of China
Replacing GB/T 41-2000
Hexagon nuts Type 1 Class C
[ISO 4034.2012, Hexagonregularnuts (style1) -ProductgradeC, 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 "(part) hex nut" national standards one of the series, the series includes.
--- GB/T 411 type hexagon nuts C grade;
--- GB/T 61701 type hexagon nuts;
--- GB/T 61711 type hexagon nuts with fine pitch thread;
--- GB/T 6172.1 Hexagon thin nuts;
--- GB/T 6173 Hexagon thin nuts with fine pitch thread;
--- GB/T 6174 Hexagon thin nut without chamfer;
--- GB/T 61752 type hexagon nuts;
--- GB/T 61762 type hexagon nuts with fine pitch thread;
--- GB/T 6177.1 2 type hexagon nuts with flange;
--- GB/T 6177.2 2 type hexagon flange nuts fine teeth.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 41-2000 "hex nuts C class", compared with the GB/T 41-2000, the main technical changes are as follows.
--- To modify the standard name;
--- Delete "For other technical requirements, GB/T 3098.2 and GB/T 3103.1) Select." (Chapter 1 of the 2000 edition);
--- Reference standard unified thread GB/T 193, GB/T 9145 (Chapter 2);
--- Performance Level 4 Remove nuts (Table 3);
--- Hot dip galvanized coatings increase the technical requirements according to GB/T 5267.3 (Table 3).
This standard uses redrafted law revision using ISO 4034.2012 "standard hex nuts (type 1) Product grade C" (in English).
This standard and ISO 4034.2012 technical differences and their reasons are as follows.
--- Delete ISO 4034 states. "For other technical requirements, ISO 4759-1, select" (Chapter 1), not part of the standard gauge
Given content;
--- 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.
--- To modify the standard name;
--- Delete references ISO 4034.
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. Zhejiang Haili Co., Ltd., Haiyan Yuxing Nuts Co., Ltd.
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/T 41-1958, GB/T 41-1966, GB/T 41-1976, GB/T 41-1986, GB/T 41-2000.
Hexagon nuts Type 1 Class C
1 Scope
This standard specifies the C-stage type 1 hex nut type size, technical requirements and marking.
This standard applies to thread sizes M5 ~ M64, performance rating of 5, product grade C grade type 1 hex nut.
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 3098.2 Mechanical properties of fasteners (GB/T 3098.2-2015, ISO 898-2.2012, MOD)
GB/T 3103.1 Tolerances for fasteners - Bolts, screws, studs 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 5267.3 fasteners hot-dip galvanizing layer (GB/T 5267.3-2008, ISO 10684.2004, IDT)
GB/T 5276 Fasteners Bolts, screws, studs and nuts - Symbols and designations size (GB/T 5276-2015, ISO 225.
2010, 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
Nut pattern dimensions shown in Figure 1, Table 1 and Table 2.
Size code and labeling should be consistent with GB/T 5276.
aβ = 15 ° ~ 30 °;
bθ = 90 ° ~ 120 °.
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
dw min 6.70 8.70 11.50 14.50 16.50 22.00 27.70
e min 8.63 10.89 14.20 17.59 19.85 26.17 32.95
max 5.60 6.40 7.90 9.50 12.20 15.90 19.00
min 4.40 4.90 6.40 8.00 10.40 14.10 16.90
mw min 3.50 3.70 5.10 6.40 8.30 11.30 13.50
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
Thread size D M24 M30 M36 M42 M48 M56 M64
Pa 3 3.5 4 4.5 5 5.5 6
dw min 33.30 42.80 51.10 60.00 69.50 78.70 88.20
e min 39.55 50.85 60.79 71.30 82.60 93.56 104.86
max 22.30 26.40 31.90 34.90 38.90 45.90 52.40
min 20.20 24.30 29.40 32.40 36.40 43.40 49.40
mw min 16.20 19.40 23.20 25.90 29.10 34.70 39.50
Nominal = max 36.00 46.00 55.00 65.00 75.00 85.00 95.00
min 35.00 45.00 53.80 63.10 73.10 82.80 92.80
aP --- pitch.
Table 2 Non-preferred thread size in millimeters
Thread size D M14 M18 M22 M27 M33 M39 M45 M52 M60
Pa 2 2.5 2.5 3 3.5 4 4.5 5 5.5
dw min 19.20 24.90 31.40 38.00 46.60 55.90 64.70 74.20 83.40
e min 22.78 29.56 37.29 45.20 55.37 66.44 76.95 88.25 99.21
max 13.90 16.90 20.20 24.70 29.50 34.30 36.90 42.90 48.90
min 12.10 15.10 18.10 22.60 27.40 31.80 34.40 40.40 46.40
mw min 9.70 12.10 14.50 18.10 21.90 25.40 27.50 32.30 37.10
Nominal = max 21.00 27.00 34.00 41.00 50.00 60.00 70.00 80.00 90.00
min 20.16 26.16 33.00 40.00 49.00 58.80 68.10 78.10 87.80
aP --- pitch.
4 Technical conditions and reference standards
Technical conditions and standards referenced in Table 3.
Table 3 Technical conditions and reference standards
Material Steel
General technical conditions GB/T 16938
Screw thread
Tolerance 7H
Standard GB/T 193, GB/T 9145
Mechanical behavior
grade
M5 \u003cD≤M39.5;
D> M39. by agreement
Standard GB/T 3098.2
tolerance
Product grade C
Standard GB/T 3103.1
Surface treatment
Without treatment;
Electroplating technology required by the GB/T 5267.1;
Non-electrolytic zinc flake coating technology required by the GB/T 5267.2;
Hot-dip galvanized coatings required by the GB/T 5267.3;
For additional technical requirements or surface treatment, supply and demand should Agreement
Acceptance and packaging GB/T 90.1, GB/T 90.2
5 Mark
5.1 labeling method
Marking method according to GB/T 1237 regulations.
5.2 tag example
Thread size is M12, the performance rating of 5, the surface is not treated, the product grade C grade Type 1 hexagonal nut mark.
Nut GB/T 41 M12
6102-