High Tensile Hex Bolt Grade 10.9 — ISO 4014 / ISO 4017

Description

Product Overview
High Tensile Hex Bolt Grade 10.9 (ISO 4014 / ISO 4017) is a precision-engineered, quenched-and-tempered carbon steel fastening solution rated for high-strength structural and mechanical assemblies. Designed for critical joints subject to heavy loads, shock, and vibration, it provides predictable clamping force and fatigue resistance in demanding industrial environments. Its principal value is delivering certified, high-strength performance (minimum tensile strength ~1040–1140 MPa) with tight dimensional tolerances to reduce rework, downtime, and safety risk. For global manufacturers, EPC contractors, and MRO supply chains, this bolt is a strategic component that standardizes high-reliability connections and simplifies quality assurance across projects.

Key Specifications & Technical Characteristics

• Standard: ISO 4014 (hex head bolt, full/part thread) and ISO 4017 (hex head screw, fully threaded) as applicable.

• Grade/Class: 10.9 (quenched and tempered medium-carbon steel).

• Mechanical properties: Minimum tensile strength approximately 1040–1140 MPa; yield strength approximately 940 MPa (typical—tested per ISO/EN methods).

• Material & chemistry: Alloyed carbon steel, commonly conforming to C35–C55 base chemistries with controlled Si, Mn, P, S; heat-treated to 10.9 specification. (Composition certificates provided on request.)

• Surface finish options: Plain black (phosphated), zinc plated (ISO 4042), hot-dip galvanized (EN ISO 1461) for enhanced corrosion resistance, and alternative coatings (geomet, PTFE) by agreement.

• Dimensional range: Diameters M5–M36 (metric), lengths per ISO standards and custom lengths on order; tolerances per ISO 4759-1.

• Threading: Metric coarse and fine threads available; standard pitch per ISO metric thread series.

• Form & appearance: Hex head, machine-rolled threads, industrial finish; color varies by coating.

• Packaging: Bulk cartons, palletized crates, steel banded wooden boxes, or IBC-compatible crates; inner packing with corrosion inhibitors for coated parts.

• Traceability: Batch-lot marking, heat number stamping (where feasible), full test certificates (MTC/EN 10204 3.1) available.

• Shelf life: Indefinite when stored dry and protected; recommended storage in covered, low-humidity warehouse to preserve coatings.

Core Industrial Applications

• Primary industries: Construction and civil engineering, heavy machinery and earthmoving, oil & gas (onshore/offshore), power generation (thermal, hydro, wind), mining, rail, shipbuilding, and industrial equipment manufacturing.

• Typical use cases: Structural bolted connections in steel frameworks, flanged connections in piping and pressure systems, chassis and axle assemblies in heavy vehicles, turbine and gearbox fastenings, and safety-critical anchor assemblies.

• Performance advantages: High tensile capacity and superior yield strength reduce bolt count or section size in many designs; excellent fatigue resistance under cyclic loads; heat treatment and controlled chemistry ensure consistent mechanical behavior across batches.

• Operational benefits: Minimizes maintenance interventions and unscheduled downtime by sustaining clamp load under thermal cycling and vibration; simplifies engineering verifications due to well-documented mechanical properties.

Competitive Advantages

• Quality consistency: Manufactured to strict heat-treatment and dimensional controls with statistical process control (SPC) and batch testing; full material test certificates supplied to support QA/QC.

• Supply reliability: Bulk production capability with safety-stock planning, scheduled replenishment, and priority allocation for long-term contracts; factory network for scaling orders.

• Logistics capability: Export-ready packaging, containerized loading expertise, customs documentation support, and options for FOB, CIF, DAP delivery terms.

• Price competitiveness: Industrial-scale production and optimized logistics lower unit costs at bulk MOQs; tiered pricing for long-term contracts or blanket purchase agreements.

• Sustainability: Material sourcing transparency, options for high-durability coatings to extend service life (reducing replacement frequency), and recyclable steel content consistent with circular-economy goals.

• Technical support: Engineering data sheets, torque-tension guidance, installation best practices, and access to mechanical test reports; customization and technical collaboration available for OEM projects.

Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20 MT.

• Loading capacity (MT per container): Typical 20-foot container up to ~22–24 MT nett (depending on packaging), 40-foot container up to ~26–28 MT nett; exact loading optimized to packaging and part size.

• Lead times: Standard lead time depends on quantity and coating choice; indicative 4–8 weeks for bulk orders after PO and MTC confirmation (confirm at RFQ).

• Certifications available: MTC (EN 10204 2.2 / 3.1), ISO 9001 factory, RoHS/REACH declarations on request.

• Commercial terms: FOB/CIF/DAP, volume discounts, and contract pricing available for multi-shipment agreements.