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AS1252
AS1252 Class 8.8 Structural Bolt Assemblies
AS/NZS 1252 Class 8.8 Structural Bolt Assembly – High-strength steel fastener assembly per AS/NZS 1252.1:2016, comprising Class 8.8 bolt per ISO 898-1, Class 8 nut with ISO metric coarse pitch thread, and hardened and tempered steel washer. Assembly supplied pre-assembled as a matched set (bolt, nut, washer). Diameters M12–M36; older revisions (1996, 1983) covered M16–M36. Heat-treated medium carbon steel. Ultimate tensile strength ≈800 MPa, yield ≈640 MPa. Intended for fully tensioned preloaded connections in steel structures; also used snug-tight or partially tensioned per design. K-class K0, K1, or K2 classification per AS/NZS 1252:2016. Finishes: hot-dip galvanized per AS/NZS 1214 / ISO 10684, zinc plating, black oxide. Applications: steel-to-steel structural connections, buildings, bridges, water storage tanks. CE marked; EN 10204 Type 3.1 inspection certificate available.
AS/NZS 1252 Class 8.8 Structural Bolt Assembly – High-strength steel fastener assembly per AS/NZS 1252.1:2016, comprising Class 8.8 bolt per ISO 898-1, Class 8 nut with ISO metric coarse pitch thread, and hardened and tempered steel washer. Assembly supplied pre-assembled as a matched set (bolt, nut, washer). Diameters M12–M36; older revisions (1996, 1983) covered M16–M36. Heat-treated medium carbon steel. Ultimate tensile strength ≈800 MPa, yield ≈640 MPa. Intended for fully tensioned preloaded connections in steel structures; also used snug-tight or partially tensioned per design. K-class K0, K1, or K2 classification per AS/NZS 1252:2016. Finishes: hot-dip galvanized per AS/NZS 1214 / ISO 10684, zinc plating, black oxide. Applications: steel-to-steel structural connections, buildings, bridges, water storage tanks. CE marked; EN 10204 Type 3.1 inspection certificate available.
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Product Details
AS/NZS 1252 High-Strength Structural Bolt Assemblies | Property Class 8.8, Hexagon Head, Metric Coarse
Product Introduction
High-strength structural bolting assemblies manufactured to AS/NZS 1252.1:2016 for steel-to-steel connections in buildings, bridges, and infrastructure. Each assembly comprises a property class 8.8 hexagon head bolt, a property class 8 hexagon nut, and a through-hardened washer. Diameters M12 to M36 in ISO metric coarse pitch, lengths 30 mm to 1050 mm depending on diameter. Assemblies are classified by K-class (K0, K1, K2) per verification testing to AS/NZS 1252.2:2016, with K0 standard for general structural use.
Material & Mechanical Properties
Bolt: property class 8.8 per ISO 898-1, minimum tensile strength 800 MPa, minimum yield strength 640 MPa. Nut: property class 8 per ISO 898-2, proof load matched to bolt tensile capacity. Washer: through-hardened, core hardness 20–45 HRC. Medium carbon steel, heat treated. All mechanical values certified by lot.
Geometry & Thread
Hexagon head dimensions per AS/NZS 1252. For M24: width across flats 41 mm, head height 15 mm. For M12: width across flats 21 mm, head height 7.5 mm. Metric coarse thread series. Washer supplied as part of the matched assembly.
Corrosion Protection
Hot-dip galvanized finish available for outdoor and exposed structural applications, providing a sacrificial zinc layer. Other finishes may be supplied to order.
Marking & Certification
Bolt head permanently marked with property class 8.8, manufacturer’s identification mark, and batch traceability code. Assemblies are supplied pre-matched from a single manufacturer. Verification testing by an independent accredited laboratory to AS/NZS 1252.2. K-class classification (K0, K1, K2) assigned based on test results.
Application Suitability
Structural steel connections in buildings, bridges, and infrastructure where high-strength bolting to AS/NZS 1252 is specified. Suitable for bearing and slip-resistant joints when installation and surface preparation conform to the relevant design code.
| Place of Origin | CHINA |
| Standard | AS1252 Class 8.8 Structural Bolt Assemblies |
| HS CODE | 7318159001 |
| Brand Name | QBH |
| Certification | ISO9001 |
| Material | 35K, 40Cr, 35CrMo, SCM435，etc. |
| Size | M3-M64 |
| Production Process | Cold forging≤300mm, Hot forging≤1000mm |
| Class | 4.8/ 6.8/ 8.8/ 10.9/ 12.9 |
| Delivery Time | Within 30 Days |
AS/NZS 1252 High-Strength Structural Bolt Assemblies | Property Class 8.8, Hexagon Head, Metric Coarse
Product Introduction
High-strength structural bolting assemblies manufactured to AS/NZS 1252.1:2016 for steel-to-steel connections in buildings, bridges, and infrastructure. Each assembly comprises a property class 8.8 hexagon head bolt, a property class 8 hexagon nut, and a through-hardened washer. Diameters M12 to M36 in ISO metric coarse pitch, lengths 30 mm to 1050 mm depending on diameter. Assemblies are classified by K-class (K0, K1, K2) per verification testing to AS/NZS 1252.2:2016, with K0 standard for general structural use.
Material & Mechanical Properties
Bolt: property class 8.8 per ISO 898-1, minimum tensile strength 800 MPa, minimum yield strength 640 MPa. Nut: property class 8 per ISO 898-2, proof load matched to bolt tensile capacity. Washer: through-hardened, core hardness 20–45 HRC. Medium carbon steel, heat treated. All mechanical values certified by lot.
Geometry & Thread
Hexagon head dimensions per AS/NZS 1252. For M24: width across flats 41 mm, head height 15 mm. For M12: width across flats 21 mm, head height 7.5 mm. Metric coarse thread series. Washer supplied as part of the matched assembly.
Corrosion Protection
Hot-dip galvanized finish available for outdoor and exposed structural applications, providing a sacrificial zinc layer. Other finishes may be supplied to order.
Marking & Certification
Bolt head permanently marked with property class 8.8, manufacturer’s identification mark, and batch traceability code. Assemblies are supplied pre-matched from a single manufacturer. Verification testing by an independent accredited laboratory to AS/NZS 1252.2. K-class classification (K0, K1, K2) assigned based on test results.
Application Suitability
Structural steel connections in buildings, bridges, and infrastructure where high-strength bolting to AS/NZS 1252 is specified. Suitable for bearing and slip-resistant joints when installation and surface preparation conform to the relevant design code.
| Place of Origin | CHINA |
| Standard | AS1252 Class 8.8 Structural Bolt Assemblies |
| HS CODE | 7318159001 |
| Brand Name | QBH |
| Certification | ISO9001 |
| Material | 35K, 40Cr, 35CrMo, SCM435，etc. |
| Size | M3-M64 |
| Production Process | Cold forging≤300mm, Hot forging≤1000mm |
| Class | 4.8/ 6.8/ 8.8/ 10.9/ 12.9 |
| Delivery Time | Within 30 Days |
FAQ
1. How do you let me trust you.
Jiaxing City Qunbang Hardware Co.,ltd hs its own right of import and export,QBH trademark in China,United States,European Union have been registered.At the same time,you can also check the registration information of our company in the China industry and Commerce system.
2. How about your price.
We will be based on different markets,for different quality and quantity,tailor-made prices for customers,in order to achieve win-win goal.
3. How do you control your quality.
Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC),and the random samples is sent to TUV for testing.If the customer received the goods and found quality problems,QBH company promises to be responsible for returning money or replenishing the goods
4. Could you provide free samples?
For new customer, We can provide free samples for standard fastener, But the clients will pay the express
charges. For old customer, We will send you free samples and pay express charges by ourself.
5. What is your packing.
Usually 25KG/carbon,36CTNS on the pallets,or 20-30kg/Bags,then on the pallet,QBH company personalized packagingis also available,like 10PCS/plastic bag or 10pcs/box,it can print some information
such as LOGO and pattern of customers.
6. What is your payment term
Normally,our terms of payment are TT and L/C,if we cooperate for a long time,we can reach the point of mutual trust,and fully support our customers to become bigger and stronger in the local market.Not only in the price concessions,but also in the payment can also be made on credit,Specific credit sales time needs to be negotiated separately.
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