This standard specifies the mechanical property marking system, indicators, test items, test methods and markings for non-ferrous metal fasteners. This standard applies to commercial fastener products such as bolts, screws, studs and nuts made of copper and copper alloys or aluminum and aluminum alloys with a thread diameter of 1.6~39mm, and whose thread dimensions and tolerances are in accordance with GB 196 and GB 197. This standard does not apply to set screws and similar threaded fasteners that do not specify tensile strength or nut proof load. This standard does not specify performance requirements for corrosion resistance and conductivity. GB/T 3098.10-1993 Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals GB/T3098.10-1993 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals This standard is equivalent to the international standard ISO8839-1986 "Mechanical properties of fasteners - and nuts".
Subject content and scope of application
GB/T 3098.10-93
Bolts, screws, studs made of non-ferrous metals This standard specifies the marking system, indicators, test items, test methods and markings for the mechanical properties of non-ferrous metal fasteners. This standard applies to bolts, screws, studs and nuts made of copper and copper alloys or aluminum and aluminum alloys with a thread diameter of 1.6~39mm, and the thread size and tolerance are in accordance with GB196 and GB197. This standard does not apply to set screws and similar threaded fasteners for which the tensile strength or nut proof load is not specified. This standard does not specify the performance requirements for corrosion resistance and electrical conductivity. 2
Referenced standards
Basic dimensions of common threads
GB 197
Common threads
GB 3098. 1
GB 3098. 2
GB 3098. 6
GB3190
GB5231
GB5232
Tolerances and fits
Mechanical properties of fasteners Bolts, screws and stud nuts
Mechanical properties of fasteners
Mechanical properties of stainless steel bolts, screws, studs and nuts
Chemical composition of aluminum and aluminum alloy processed products
Chemical composition of pure copper processed products
Chemical composition of brass processed products
GB5233Chemical composition of bronze processed products
3 Marking system
The marking codes for the performance grades of non-ferrous metal bolts, screws, studs and nuts are shown in Table 1. Table 1
Marking codes for performance grades
Performance grades
The marking codes for performance grades consist of two parts: letters and numbers: the letters are the same as the letters of the chemical element symbols of non-ferrous metal materials; the numbers represent the performance grade serial number. Approved by the State Bureau of Technical Supervision on July 28, 1993 158
Implementation on July 1, 1994
4 Materials
GB/T3098.10-93
Table 2 specifies the non-ferrous metal material grades applicable to each performance level. Table 2 Materials
Performance Grade
Material Brand
HPh58-2
QSn6.5-0.4
QSi1-3
QAl-10-4-4
Standard No.
GB5231
GB5232
GB5232
GB5233
GB5233
GB5233
Performance Grade
Material Brand
LF11, LF5
LY8, LD9
According to the agreement between the supply and demand parties, when the supplier can guarantee the mechanical properties, materials other than those in Table 2 can be used. In order to ensure that the fasteners meet the requirements of the relevant mechanical properties, the manufacturer shall determine whether to perform heat treatment. 5 Mechanical properties
Standard number
GB3190
GB3190
GB3190
GB3190
When tested at room temperature in accordance with the methods specified in Chapter 7, the mechanical properties and working performance of bolts, screws, studs and nuts shall comply with the provisions of Tables 3 to 5.
5.1 The mechanical properties of external threaded parts shall be as specified in Table 3. The minimum tensile load of bolts, studs and screws shall be as specified in Table 4. 5.2
5.3 The minimum breaking torque of bolts and screws shall be as specified in Table 5. 5.4 The guaranteed load of nuts shall be as specified in Table 4. Performance grade
Thread diameter
>6～39
>12～39
Table 3 Mechanical properties
Tensile strength
b(min)
Yield strength
Co.2(min)
Elongation
a(min)
Performance grade
Thread diameter
>6～39
>12~39
>10～20
>14～36
>10～39
GB/T 3098.10-93
Continued Table 3
Tensile strength
p(min)
Yield strength
Co.2(min)
Minimum tensile load of bolts, studs and screws or proof load of nuts Nominal stress
Cross-sectional areaWww.bzxZ.net
Minimum tensile load
21 460
Property grade
Proof load
Elongation
17 050
34 220
12 720
Nominal stress
Cross-sectional area
Nominal stress
Cross-sectional area
GB/T 3098.10—93
Continued Table 4
Performance level
110200
134600
166600
196100
2 34200
Minimum tensile load
112100
130600
169800
207600
256800
3 02300
361100
112100
130600
169800
207600
256800
3 02300
361100
Guaranteed load
121200
141200
183600
224400
277 600 | | tt | | 326800 | |270800
331000
107800
133300
155300
202000
246800
305400
359500
429400
Guaranteed load A.XS.
100500
122900
156800
193900
225900
293800
359000
444200
522900
624600
Thread diameter
Nominal stress
Cross-sectional area
Test items of mechanical properties
GB/T3098.10—93
Continued Table 4
Performance level
Minimum tensile load
128500
157 100
194300
228800
109400
142300
173900
215100
253300
302600
Minimum breaking torque
Minimum breaking torque, V·m
Proof load
115100
134100
174400
2 13200
263700
310500
370900
112700
139400
162400
211100
258100
319200
375800
449000
The test items of bolts, screws, studs and nuts shall comply with the provisions of Table 6, otherwise, they shall be agreed upon by the supply and demand parties. Table 66讠
Test items
Thread diameter
Bolts, screws and studs
Tensile test
Torque test (excluding studs)
Tensile test;
Test items
Proof load test
If necessary, yield strength and elongation tests may also be carried out upon agreement between the two parties
124900
154500
180 000
234 100
286100
353900
416700
497800
Test method
7.1 Tensile test
GB/T 3098.10—93
Tensile test shall be carried out in accordance with the provisions of Articles 8.1 and 8.2 of GB3098.1. 7.2 Torque test
Torque test shall be carried out in accordance with the method specified in Article 7.2 of GB3098.6. 7.3 Guaranteed load test of nuts
The guaranteed load test of nuts shall be carried out in accordance with the relevant provisions of Chapter 8 of GB3098.2. Marking of performance grade
8.1 Marking code
The marking code on the product shall be consistent with the marking code of performance grade in Chapter 3. 8.2 Marking requirements and methods
8.2.1 Bolts, studs and nuts with thread diameter ≥5mm shall be marked. 8.2.2 Mark with convex or concave characters on the top surface of the bolt head; or with concave characters on the side of the head. 8.2.3 Mark with concave characters on the end face of the stud. 8.2.4 Mark with concave characters on the bearing surface or side of the nut. 8.2.5 The marking of left-handed threads shall comply with the provisions of Article 9.3 of GB3098.1 or GB3098.2. 8.2.6 The marking of screws shall comply with the provisions of Articles 9.2.1 to 9.2.2 of GB3098.1. 8.3 Trademark (identification)
For all products marked with performance grades, a trademark (identification) must be made on the product. 163
Performance level
Additional instructions:
GB/T3098.10—93
Appendix A
Applicable international standard material grades
(reference parts)
Material grades
Cu-ETP or Cu-FRHC
CuZn37
CuZn39Pb3
CuNiiSi
CuZn40MniPb
CuAl1oNi5Fe4
AISiMgMn
AICu4MgSi
AIZnMgCu0. 5
AIZn5.5MgCu
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Fasteners. This standard was drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry. 164
ISO1337
Standard No.
ISO426/1
ISO)426/2
ISO427
ISO1187
ISO428
ISO 209
ISO)209
ISO 209
ISO209
ISO 209
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