What is the Steel Hex Bolts to AS/NZS Standards?
AS/NZS 1252: Specifies technical requirements for high-strength structural bolts (grade 8.8, 10.9, etc.) used in steel structure connections (e.g., building frames, bridge trusses, tower cranes). These bolts are designed to withstand high tensile and shear loads, critical for structural safety. AS/NZS 1442: Governs general-purpose hex bolts (grade 4.6, 5.6, etc.) for non-structural applications, such as equipment assembly, pipeline installation, and light-duty construction. They focus on cost-effectiveness while meeting basic mechanical performance.
Hangzhou Gmetalparts as one of the leading high strength bolt manufacturer in Hangzhou ,AS/NZS 1252 bolts grade 8.8 and 10.9 is our main products ,hot dipped galvanized is our main surface coating in our regular producing process and exporting ,especially for electric tower ,constrcution projects ,agriculture irrigation industry .
What is the difference between AS/NZS standard bolts and ISO/DIN standard bolts?
There are three main differences.
- First, in terms of scope, AS/NZS 1252 has special provisions for structural bolt assemblies including matching nuts and washers, while ISO/DIN standards often set separate specifications for bolts alone.
- Second, regarding markings, AS/NZS requires clear manufacturer identification and grade marks on bolt heads, with stricter traceability rules.
- Third, in dimensions, AS 1110.1 – 2000 covers diameters up to 64mm, and some dimensional tolerances of the bolt head differ slightly from ISO 4014.
What steel grades are available for AS/NZS standard hex bolts (e.g., 4.6, 8.8, 10.9)?
Hangzhou Gmetalparts offer a full range of common grades. For general – purpose bolts (AS 1110.1 – 2000), we have 4.6 (low – carbon steel) and 8.8 (alloy steel). For structural bolts (AS/NZS 1252.1 – 2016), 8.8 is the standard grade. We also provide 10.9 grade bolts for high – load scenarios.Additionally, for corrosion – prone environments, we supply 304 and 316 stainless steel hex bolts that meet AS/NZS corrosion – resistance derivative standards. We also have some customers ,who need 304 and 316 stainless steel bolt is necessary for high corrosion requirements environment
Can AS/NZS hex bolts be used in marine or coastal high – humidity environments?
Yes, but the right material and surface treatment must be selected. We recommend 316 stainless steel bolts or carbon steel bolts with hot – dip galvanizing and passivation treatment. These meet the corrosion – resistance derivative requirements of AS/NZS standards. In marine projects, we also provide bolts with supplementary salt spray test reports (up to 1000 hours of neutral salt spray resistance).
What testing items do AS/NZS hex bolts need to pass before leaving the factory?
We have own ISO90001 quality system standards ,it covers multiple items.Routine tests include thread go – no – go gauge testing, dimensional measurement, and surface defect inspection.Except that ,mechanical tests involve tensile strength, yield strength, and hardness testing will be done after finishing the high strength bolts . For structural bolts, additional torque coefficient and impact tests are required.Each batch has a sampling test record to ensure qualification before leaving the factory. We will ensure that every batch of bolts is traceable before leaving the Hangzhou Gmetalparts factory.
Which engineering scenarios are AS/NZS 1252 hex bolts most suitable for?
They are most suitable for load – bearing structural scenarios, including steel frame connections in high – rise buildings, bridge steel structure splicing, industrial plant steel beam fixing, and large – scale equipment base installation. They are designed as assemblies with matching nuts and washers to ensure high – strength and anti – loosening performance in long – term stress environments.
Can you produce AS/NZS hex bolts using stainless steel (e.g., 304, 316) materials?
Yes. Hangzhou Gmetalparts produce 304 and 316 stainless steel hex bolts that comply with AS 1110.1 – 2000. These bolts are optimized for corrosion resistance. The 316 grade ones are suitable for coastal or chemical – exposed environments in Australia and New Zealand, and their dimensional and thread standards are fully consistent with carbon steel AS/NZS hex bolts.
Hangzhou Gmetalparts has been dedicated to the R&D, manufacturing and trading of Australia-standard structural steel bolts since 2008. As a professional fasteners manufacturer in china , we strictly adhere to core Australian standards including AS/NZS 1252 and AS 1110.1, offering a full range of structural bolt products with strength grades of 8.8 and 10.9, together with matching nuts and washers . Our products fully meet the critical connection requirements of steel structure projects in Australia and New Zealand.
Equipped with advanced stamping and CNC machining equipment, coupled with a comprehensive quality inspection system, we maintain rigorous control over material stability, dimensional accuracy and mechanical properties of our bolts products. These bolts are ideal for heavy-load scenarios such as factory steel trusses and building beam-column joints, while also satisfying the auxiliary connection needs of general steel structures. Thanks to their reliable quality, our products have been exported to overseas markets on a large scale, establishing us as a trusted supplier in the Australia-standard structural steel bolt sector.To ensure the safety and longevity of of your structures, please feel free to ask us for high strength bolting solutions via sales@gmetalparts.com . Our fasteners experts are always here to support you at our best. Look forward to hear from you.
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