10.9S Torsion Shear Bolt Specifications
Parameter | Details |
Product Name | 10.9S Torsion Shear High Strength Structural Bolt Assembly |
Standard | GB/T3632-2018, GB/T3633-2018 National Standard |
Structure | Torsion shear tail self-locking structure, complete set with bolt, nut and flat washer |
Grade | 10.9S Structural Special Grade, Alloy Steel 20MnTiB/35VB |
Surface Finish | Black Phosphating, Hot-dip Galvanized, Dacromet Coating |
Thread Type | Standard Metric Coarse Thread, Full Gauge Inspection |
Size Range | M16-M30 Standard Sizes In Stock, Custom Sizes Available |
Core Function | High-precision locking, heavy load bearing, vibration resistance, structural friction connection |
Application | Steel workshops, bridges, curtain walls, space trusses, new energy steel structures |
Inspection | Torque coefficient test, pre-tightening force test, mechanical performance inspection |
Package | Moisture-proof package + export carton + pallet, OEM packaging available |
Lead Time | 3-7 Days for Stock Sizes, 15-20 Days for Custom Processing |
Product Core Advantages
Accurate & Unified Torsion Locking
Equipped with professional torsion shear self-locking structure. The tail breaks off automatically when reaching the standard pre-tightening force, realizing unified locking torque without manual adjustment. It effectively avoids construction errors such as under-tightening and over-tightening, ensuring consistent installation accuracy for large-scale steel structure projects.
Made of special alloy steel with quenching and tempering heat treatment. The 10.9S professional structural grade provides ultra-high tensile strength and yield strength, with excellent deformation resistance and fatigue resistance. It stably bears heavy load and dynamic vibration, ensuring long-term safety of steel structure main bodies.
Complete Matched Set Delivery
Supplied as a complete assembly of bolt, nut and flat washer from the same production batch. All accessories have matched mechanical properties and dimensional accuracy, no assembly gap and no fastening failure. It greatly improves on-site construction efficiency and reduces matching costs.
Qualified Engineering Inspection
All products comply with national engineering acceptance standards. Complete batch inspection reports and mechanical test reports can be provided, supporting third-party testing for construction sites. Ideal for national infrastructure and overseas engineering bidding projects.
Grade Selection Guide
Black Phosphating Standard Type
Cost-effective and stable performance with basic anti-rust treatment. Suitable for indoor steel structure workshops, conventional grid structures and general building load-bearing connections, the most widely used type for domestic engineering.
Hot-dip Galvanized Weather-resistant Type
Thick galvanized layer with superior salt spray and corrosion resistance. Designed for outdoor bridges, curtain walls, wind power supports and open-air steel structures, extending service life in outdoor harsh environments.
Dacromet High Anti-corrosion Type
High-end anti-corrosion coating with acid and alkali resistance, high temperature resistance and no hydrogen brittleness. Perfect for coastal, chemical and high-corrosion working conditions, meeting high-standard overseas engineering requirements.
10.9S Bolt VS Ordinary High-strength Bolt Difference
10.9S Torsion Shear Structural Bolt: Professional for steel structure friction connection, with automatic torsion locking function. It features unified pre-tightening force, high construction efficiency and strict engineering standards, specially used for main load-bearing parts of large steel structure projects.
Ordinary High-strength Hex Bolt: No self-locking structure, relying entirely on manual torque adjustment with large human error. Only suitable for static and ordinary mechanical fastening scenarios, unable to meet high-precision and high-seismic requirements of steel structure main engineering.
Production Process
High-quality Alloy Raw Material: Adopt special structural alloy steel to ensure high strength and toughness of finished products, avoiding structural defects.
Integrated Hot Forging Forming: One-piece forming of bolt body and torsion shear end with dense structure and uniform stress.
Precision Thread Rolling: Standard full-size thread with 100% gauge inspection to ensure tight meshing and no slipping.
Accurate Torsion End Processing: Professional equipment ensures precise breaking torque and stable locking effect.
Quenching & Tempering Treatment: Strict heat treatment to stably reach 10.9S mechanical performance standards.
Custom Anti-corrosion Treatment: Multiple surface processes to adapt to different indoor and outdoor working conditions.
Strict Batch Inspection: Full-item testing of torque, pre-tightening force and mechanical properties to ensure stable batch quality.
Application Industries
Steel Structure Factory: Main connection of steel columns, steel beams and roof grid structures.
Municipal Bridge Engineering: Load-bearing fastening of highway and pedestrian steel bridges.
Building Curtain Wall: Fixing of high-rise building exterior wall and bracket steel structures.
New Energy Industry: Fastening of wind power and photovoltaic steel support structures.
Large Venue Grid: Connection of long-span steel structure domes and stadium grids.
Overseas Infrastructure: Supporting fasteners for foreign aid projects and overseas steel structure engineering.
Why Choose Our 10.9S Torsion Shear Bolts
We are a professional manufacturer of 10.9S torsion shear high-strength structural bolt assemblies. All products are produced in strict accordance with GB/T3632-2018 national standards, with stable torque performance, unified batch quality and complete specifications. We provide complete set of products and engineering inspection certificates, supporting bulk domestic engineering orders and foreign trade export orders. Custom anti-corrosion processes and special sizes are available to provide reliable structural fastening solutions for global steel structure projects.
For standard 10.9S torsion shear structural bolt sets, custom anti-corrosion fasteners and steel structure supporting bolts, please feel free to contact us for professional technical support and accurate quotation.
