GB/T 13681-1992 English PDF (GBT13681-1992)

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GB/T 13681-1992: Hexagon weld nuts
GB/T 13681-92
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Hexagon Weld Nuts
焊接六角螺母
ISSUED ON. SEPTEMBER 22, 1992
IMPLEMENTED ON. JUNE 1, 1993
Issued by. China State Bureau of Technical Supervision
Table of Contents
1 Subject Content and Application Scope ... 3 
2 Normative References ... 3 
3 Types and Dimensions ... 3 
4 Technical Specifications ... 5 
5 Designation system for weld nuts ... 6 
6 Steel Plate for Welding ... 6 
7 Marking ... 7 
Annex A Weight of Hexagon Weld Nuts (Informative) ... 9 
Additional Instructions... 9 
Hexagon Weld Nuts
1 Subject Content and Application Scope
This Standard specified the types, dimensions and technical specifications of
hexagon weld nuts of thread specification M4 to M16.
2 Normative References
GB 90 Acceptance Inspection, Marking and Packaging of Fasteners
GB 196 General Purpose Screw Threads – Basic Dimensions for Diameter from
1 to 600mm
GB 197 General Purpose Screw Threads – Tolerances and Fits for Diameter from
1 to 355mm
GB 1237 Designation System for Fasteners
GB 3098.2 Mechanical Properties of Fasteners – Nuts
GB 3103.1 Tolerances for Fasteners – Bolts, screws, studs and nuts
GB 5267 Electroplated Coatings on Threaded Fasteners
GB 5779.2 Surface discontinuities of Fasteners – Nuts – General Requirements
GB 12212 Technical drawings – Dimensions, proportions and simplified
representation for welding symbols
3 Types and Dimensions
The types and dimensions are as specified in Figure 1 and Table 1.
Annex A
Weight of Hexagon Weld Nuts
(Informative)
Table A1
Thread specification (D or D×P)
M4 M5 M6 M8 M10 M12 M14 M16
- - - M8×1 M10×1 M12×1.5 M14×1.5 M16×1.5
- - - - M10×1.25 M12×1.25 - -
Weight of each 1
000 pcs
kg ≈
1.09 1.48 2.18 4.55 8.13 11.79 16.35 22.24
Additional Instructions.
This Standard was proposed by the Ministry of Machinery and Electronic Industry
of the People’s Republic of China.
This Standard shall be under the jurisdiction of the National Standardization
Technical Committee on Fasteners.
This Standard was drafted by the Ministry of Machinery and Electronic Industry
Machinery Standardization Institute and Shenyang 1st Standard Parts Plant.