GB5782 Stainless steel galvanized hexagonal head bolt

GB5782 hexagon head bolt is a specification for hexagon head bolts in the Chinese National Standard (GB), widely used in industries such as machinery, construction, automobiles, and equipment 1. Basic Definition The GB5782 standard specifies metric hexagon head bolts, whose main feature is that the bolt head is hexagonal and can be installed or removed using a hex wrench or socket tool. This standard is applicable to situations where fastening connections are required. 2. Basic specifications of hexagonal head bolts According to the GB5782 standard, the main specifications of hexagonal head bolts include the following: Thread specification: The outer diameter of bolts is usually metric thread, such as M6, M8, M10, M12, M16, etc. (M represents metric thread, followed by thread diameter). Bolt length: The total length from the bolt head to the end of the thread, usually determined by usage requirements. Thread length: refers to the length of the effective threaded portion on a bolt, usually a part of the bolt. Common hex head bolt size reference: M6 × 16, M8 × 20, M10 × 25, M12 × 30, M16 × 40, etc. (specific dimensions can be customized according to needs). 3. Material and performance requirements According to the GB5782 standard, the material and performance requirements for hexagonal bolts are as follows: Materials: Commonly used materials include carbon steel (such as Q235, 45 # steel, etc.), alloy steel, stainless steel, etc. The materials should have sufficient strength and corrosion resistance. Common materials include: Carbon steel: such as Q235, 10 #, 20 #, etc; Alloy steel: such as 35CrMo, 40Cr, etc; Stainless steel: such as 304, 316, etc., suitable for environments that require corrosion resistance. Strength grade: GB5782 standard specifies bolts of different strength grades, such as: 4.8 level (applicable to general load requirements); 8.8 grade (high-strength bolts, commonly used for connections that withstand high tensile forces); Grade 10.9 (higher strength, suitable for high load applications). 4. Dimensions of hex head bolts According to the GB5782 standard, the size specifications of hexagonal bolts mainly involve the following aspects: Thread diameter: such as M6, M8, M10, M12, M16, etc. Bolt length: Depending on specific usage requirements, the length ranges from 16mm to 200mm, and some special lengths can be provided according to customized requirements. Head size: The head shape of a hexagonal bolt is hexagonal, and the width and height of the head are usually standardized according to the bolt diameter. 5. Surface treatment In order to enhance the corrosion resistance of hexagonal bolts and extend their service life, GB5782 standard specifies various surface treatment methods: Galvanizing: Electroplating or hot-dip galvanizing, commonly used to improve the rust resistance of bolts. Black oxidation treatment: A layer of black oxide film is formed through oxidation treatment to increase corrosion resistance. Spray coating treatment: used to increase the wear resistance and appearance of bolts.

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Fastener

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Product Details

Product Attributes

Place Of Origin: China

Brand: ZHONGSHI FASTENER (JIANGSU) CO., LTD

Supply Ability & Additional Information

Supply Ability: 15-90 days

Transportation: Ocean,Rail transport,Land,Others

Payment Type: T/T, L/C, D/P，Bank Guarantee，Others

Incoterm: FOB,FCA, CFR, CIF, FAS, DDP, DAP, Others

Specification：Customized on Request

We'll help you configure a system that meets all of your research needs.

Typical applications

Mechanical manufacturing: assembly of machine tools, engines, power equipment, etc.

Construction industry: used for connecting steel frames and steel facilities in building structures.

Automotive industry: the connection of automotive chassis, engine components, etc.

Ship and aerospace industry: used for connections that can withstand high loads and harsh environments.

Packaging & Delivery

Selling Units: Set/Sets

Package Type: asked by buyer

Company Overview

Founded in 1990, TongYang is a professional company specializing in developing and manufacturing chemical machinery and equipment for customers ,It has manufacturing license of grade A2 (the third type of pressure vessel) issued by state general administration of market supervision, license Key: :TS2210D94-2023. Tongyang has always been committed to the research and development, production, application of chemical machinery and equipment in fine chemical, petrochemical, food, biological and pharmaceutical industries. Our technology in develop distillation tower and separation equipment attain domestic leading level, Keep pace with international advanced level.

Provide turnkey projects

Our team can provide you with turnkey engineering, you do not have to worry about the installation is not professional, we will complete the installation and debugging according to your specific requirements, at the same time, a professional training, to solve your worries.

Competitive Advantage

Abundant experience: more than 30 years experience in non-ferrous metal cladding and production;
Technical consulting service: technical consulting on material, welding, NDE, Welding, Heat treatment ;
Independent inspection service; in-process inspection, final inspection; Hydrostatic testing etc;
Transportation: have own export license, Yangzhou Port and Shanghai Port , 2.4 kilometers away from Yangzhou Port and 226 kilometers away from Shanghai Port.

Varieties of manufacturing standards to meet the needs of the global market

GB150-2011;
ASME U, U2 Certificate;
GOST 34347;
ISO14001 , ISO 45001, ISO 9001;
ASME SEC VIII DIV.1，ASME SEC VIII DIV.2 ; f.PED 97/23/EC with CE certificate;

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