This standard specifies the product classification, technical requirements, test methods, inspection rules, packaging, marking, transportation and storage of hexagon socket wrenches. This standard applies to hexagon socket wrenches for tightening hexagon socket screws. GB/T 5356-1998 Hexagon socket wrenches GB/T5356-1998 standard download decompression password: www.bzxz.net

GB/T5356—1998
This standard is a revised version of GB5356-85 "Hexagonal wrench". In terms of technical content, it adopts the international standard ISO2936:1995 "Screw and nut assembly tools-Hexagonal wrench". This standard has made corresponding adjustments to the basic dimensions and added two specifications of 2 and 7. The test method of the product is revised in accordance with ISO2936:1995 "Screw and nut assembly tools-Hexagonal wrench". At the same time, in accordance with the provisions of GB5305-85 "Packaging, marking, transportation and storage of hand tools", the packaging, marking, transportation and storage requirements of the product are further improved. From the date of implementation, this standard will replace GB5356-85 "Hexagonal wrench". This standard is proposed by the Quality Standards Department of China Light Industry Federation. This standard is under the jurisdiction of the National Tool Hardware Standardization Center. The drafting units of this standard are: Shanghai Tool Industry Research Institute, Shanghai Feiyue Tool Factory, Jiaxing Tool General Factory, Yueqing Kangtai Hardware Tools Co., Ltd.
The main drafters of this standard are Jing Guofan, Gu Jun, Zhu Shiliang and Chen Fengxin. 280
National Standard of the People's Republic of China
Hexagon socket screw keys
GB/T 5356--1998
neqIso2936:1995
Replaces GB5356-~-85
This standard adopts the international standard ISO2936:1995 "Scope of tools for screw and nut assembly
Hexagon socket wrenches" in a non-equivalent manner.
This standard specifies the product classification, technical requirements, test methods, inspection rules, packaging, marking, transportation and storage of hexagon socket wrenches. This standard applies to hexagon socket wrenches for tightening hexagon socket screws. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T230--91Methods for testing Rockwell hardness of metalsGB/T2828--87Batch-by-batch inspection counting sampling procedures and sampling tables (applicable to inspection of continuous batches)GB/T5305--85Packaging, marking, transportation and storage of hand tools3Product classification
3.1Type and grade
Hexagon socket wrenches are divided into ordinary grade and enhanced grade, where the enhanced grade is represented by R, and its type is shown in Figure 1. A
Figure 1 Internal socket angle wrench
3.2Basic dimensions
The basic dimensions of the hexagon socket wrench are specified in Table 1. Approved by the State Bureau of Technical Supervision on March 25, 1998 and implemented on January 1, 1999
3.3 Marking examples
GB/T5356-1998
Table 1 Basic dimensions
Product marking consists of product name, specification, grade and standard number. Example: A 12mm reinforced hexagonal wrench should be marked as: Hexagonal wrench 12RGB/T5356-1998
4 Technical requirements
4.1 Each end face of the hexagonal wrench should be perpendicular to the handle, with a tolerance of ±4°. 4.2 The straightness tolerance of the hexagonal wrench is 0.5mm within every 50mm length. Minimum
4.3 The edge, radius or bevel of the end face of the hexagonal wrench, the radius of the radius or the bevel of the chamfer should not be greater than half of the difference between the diagonal width and the width s of the opposite side.
4.4 The hexagon socket wrench should be blackened, phosphated or treated with other surface treatments, and its color should be uniform. 4.5 The surface of the hexagon socket wrench should not have cracks or burrs. 4.6 The hardness and minimum test torque of the hexagon socket wrench should comply with the provisions of Table 2. 282
5 Test method
Ordinary gradebzxz.net
GB/T5356—1998
Table 2 Hardness and minimum test torque
Hardness, HRC
Reinforced grade
5.1 The size of the hexagon socket wrench shall be inspected with a universal measuring tool and shall comply with the provisions of Table 1. 5.2 The verticality of the end face shall be measured with an angle sample and shall comply with the provisions of 4.1. 5.3 The straightness shall be inspected with a 50mm knife-shaped ruler and a feeler gauge and shall comply with the provisions of 4.2. 5.4 The hardness test shall be carried out in accordance with the provisions of GB/T230 and shall comply with the provisions of Table 2. 5.5 The surface quality shall be inspected by visual inspection and shall comply with the provisions of 4.4 and 4.5. Minimum test torque, N·m
Ordinary grade
Reinforced grade
5.6 During the torque test, insert the short handle of the hexagon socket wrench into a hexagon socket joint with a hardness of not less than 60HRC. The load shall be applied to the end of the long handle of the wrench as much as possible, and the force shall be gradually increased until the minimum test torque is reached. The minimum test torque shall comply with the provisions of Table 2. After applying the minimum test torque, the hexagon socket wrench shall not have any permanent deformation that affects its performance. The width across flats and engagement depth of the hexagon socket joint shall comply with the provisions of Table 3.
Inspection rules
GB/T 5356--1998
Table 3 Dimensions of hexagon socket joints
Width across flats of socket joints
6.1 Products shall be shipped only after passing the inspection and shall be accompanied by a product certificate. Minimum
The acceptance inspection of products shall be carried out item by item according to the secondary sampling plan specified in GB/T2828. 6.2
Depth of engagement
3The classification of non-conforming products, inspection items, qualified quality level (AQL) and inspection level (IL) shall be in accordance with the provisions of Table 4. 6.3
Table 4 Classification of non-conforming products, inspection items, qualified quality level and inspection level Classification of non-conforming products
Inspection items
sSize
e, Size
Verticality
Straightness
Surface quality
Qualified quality level (AQL)
Inspection level (IL)
GB/T5356-1998
6.4 Products rejected after inspection may be reclassified or repaired by the manufacturer before submission for acceptance. 7 Packaging, marking, transportation and storage
The packaging, marking, transportation and storage of products shall comply with the provisions of GB/T5305. 285
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