Jss Ii-09 High Strength Torque Type Bolts
Product: High Strength Torque Type Bolts
Standard: JSS II-09
Raw Materials: 40Cr, 35CrMo, 42CrMo, high-quality alloy structural steel
Surface Treatment: Plain, zinc plated, black oxide, hot-dip galvanizing (H.D.G), Dacromet, Geomet
Specification Range: M16–M30
Property Class: S 8T S 10T
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Product: High Strength Torque Type Bolts
Standard: JSS II-09
Raw Materials: 40Cr, 35CrMo, 42CrMo, high-quality alloy structural steel
Surface Treatment: Plain, zinc plated, black oxide, hot-dip galvanizing (H.D.G), Dacromet, Geomet
Specification Range: M16–M30
Property Class: S 8T S 10T
Product Overview
JSS II-09 high strength torque type bolts are professional structural fasteners engineered for Japanese standard steel structure connections, adhering to JSS II-09 specifications. Optimized for torque-controlled installation, these bolts deliver stable preload and excellent clamping force, serving as core components for steel structure nodes in construction, bridge, industrial machinery and prefabricated steel projects, ensuring structural reliability and seismic performance.
Key Characteristics
Crafted from high-toughness alloy steel with quenching-tempering heat treatment, achieving high tensile, yield and fatigue strength to meet heavy-load connection demands.
Precision-machined partial thread design and uniform thread tolerance, ensuring smooth torque tightening and consistent load distribution.
Diverse surface treatments available for corrosion resistance adaptation to outdoor, humid, industrial and mild corrosive environments.
Strict dimensional accuracy and mechanical property testing, fully complying with JSS II-09 standard requirements for structural fasteners.
Mechanical Properties
|
Characteristic |
8.8 Grade |
10.9 Grade |
|
Minimum Tensile Strength |
≥800 MPa |
≥1040 MPa |
|
Minimum Yield Strength |
≥640 MPa |
≥940 MPa |
|
Hardness Range |
22–32 HRC |
32–39 HRC |
Application Fields
Ideal for Japanese standard steel structure projects including commercial/residential buildings, highway bridges, industrial workshops, logistics warehouses, heavy machinery bases and prefabricated steel structures. Suitable for all medium to heavy load structural connections requiring torque-controlled precise installation and stable structural performance.
Usage Precautions
Installation:
Use calibrated torque wrenches for two-stage tightening per design torque; avoid over/under-tightening to prevent thread damage or structural loosening.
Matching:
Pair with JSS standard high strength heavy hex nuts and flat washers of the same grade; do not mix with non-compliant fasteners.
Environment:
Adopt H.D.G/Dacromet for outdoor/humid environments; specialized anti-corrosion treatment is recommended for high-chloride scenarios.
Forbidden:
Strictly prohibit reuse after disassembly (fatigue damage risks structural safety); discard bolts with corrosion, thread damage or deformation immediately.
Quality & Logistics
Certification:
Compliant with JSS II-09, ISO9001:2015; 100% batch testing for mechanical properties and dimensional accuracy.
01
Packaging:
Small bags, cartons, pallets, iron drums; customized packaging available for project needs.
02
Logistics:
Flexible ordering (bulk/small batch); negotiable delivery terms and schedules to align with project timelines.
03
After-sales:
Provide quality inspection reports and technical guidance for installation and matching.
04
Main Sales Markets:
Japan, Southeast Asia, and global projects adopting Japanese steel structure standards.
05
Established in 2005, our company has evolved over two decades of continuous development into a leading regional enterprise in the fastener industry with fully automated end-to-end production. With an annual output value exceeding RMB 130 million, our product range covers diverse market segments from mid-range to high-end and is distributed worldwide
Our factory & quipment
Hot Tags: jss ii-09 high strength torque type bolts, China jss ii-09 high strength torque type bolts manufacturers, suppliers, factory
