Hex Bolt M14

As the manufacturer and supplier in China, we offer customized hex bolt m14 in high quality but at a cheap price for wholesalers. The M14 hex bolt is a standard hexagonal head bolt with a nominal diameter of 14 millimeters. It is widely used in heavy machinery, bridge structures, power facilities, rail transportation, petrochemicals, and large equipment installation – industrial fields that demand extremely high connection strength, durability, and reliability. Its hexagonal head design facilitates efficient installation and removal using wrenches, sockets, or power tools, making it one of the most common and reliable fastening elements in modern industrial assembly systems.

Core Performance and Technical Advantages

Based on our years of experience in fastener research, development, production, and field application, combined with materials engineering and structural mechanics analysis, we offer you the following high-performance M14 hexagonal bolts:

1. Multiple Material and Strength Grade Options

- Carbon Steel Series:

- Grade 8.8: Suitable for general industrial assembly, tensile strength ≥800MPa

- Grade 10.9: High-strength bolts, tensile strength ≥1040MPa, suitable for critical connections in steel structures, bridges, etc.

- Grade 12.9: Ultra-high strength, used in high pre-tension applications (such as engines, pressure vessels)

- Stainless Steel Series:

- A2-70 (304 stainless steel): Resistant to general corrosion, suitable for indoor and outdoor environments

- A4-80 (316 stainless steel): Contains molybdenum, resistant to chloride ion corrosion, suitable for marine, chemical, food and pharmaceutical industries

2. Precision Manufacturing Process, Ensuring Consistency and Reliability

- Cold Heading Forming: Head is formed in one step, with continuous metal fibers, improving tensile and shear performance

- Rolled Threads: High-precision rolling process, smooth and crack-free thread surface, thread accuracy reaches 6g grade

- Heat Treatment Control: Quenching and tempering treatment ensures a balance of strength and toughness, preventing brittle fracture

3. Standardized Design, Strong Compatibility

- Head Size: Standard hexagonal head (S=22mm), compatible with general tools

- Wide Length Range: Available in various specifications from 40mm to 300mm, supporting non-standard customization

- Thread Type: Coarse thread (M14×2.0) or fine thread (M14×1.5) available to meet different locking requirements

4. Advanced Surface Treatment, Extending Service Life

- Carbon Steel Models:

- Cold Galvanizing: Environmentally friendly, salt spray resistance ≥72 hours

- Dacromet (chromium-free): Corrosion resistance for more than 500 hours, no risk of hydrogen embrittlement

- Hot-dip galvanizing: Suitable for long-term outdoor exposure environments

- Stainless Steel Models: Natural passivation treatment, no electroplating required, environmentally friendly and long-lasting rust prevention

5. Resistant to Extreme Environments, Wide Applicability

- Operating temperature range: -60°C to +350°C

- Excellent vibration and shock resistance, suitable for high-speed rotating equipment and buildings in earthquake-prone areas.

Typical Application Scenarios

Our M14 hexagonal bolts have been successfully applied in several key industries and engineering projects:

Steel Structure Engineering: High-rise building steel columns and beam connection nodes

Bridges and Tunnels: Supports, guardrails, and embedded parts fixing

Heavy Machinery: Engineering machinery chassis and hydraulic system connections

Energy and Power: Boiler, pressure vessel, and generator set assembly

Rail Transit: Train bogies and track fastening systems

Why Choose Our hex bolt m14?

Authoritative Certification, Reliable Quality

- Certified by ISO 9001, ISO 14001, and IATF 16949 quality management systems

- Products comply with GB, DIN, ANSI, JIS, ISO and other international standards

- Material certificates, test reports, and certificates of conformity are provided for each batch

Owned Production Line, Full Process Control

- Self-built cold heading, heat treatment, thread rolling, and surface treatment workshops

- Equipped with professional equipment such as spectrometers, tensile testing machines, salt spray testing chambers, and metallographic microscopes

- Achieves full-process quality traceability from raw materials to finished products

Professional Technical Support and Customer Service

- Provides selection suggestions, torque parameter tables, and installation specification documents

- Supports sample testing, non-standard customization, and OEM labeling services

- 24-hour online technical response to solve customers' practical problems

FAQ

Q1: What does "M14" in the M14 hexagonal bolt mean?

A: "M" represents metric thread, and "14" indicates that the nominal diameter of the thread is 14 millimeters.

Q2: What is the difference between 10.9 grade and 12.9 grade bolts?

A: 10.9 grade has a tensile strength ≥1040MPa, and 12.9 grade ≥1220MPa. The latter has higher strength, but requires stricter installation torque.

Q3: Is it possible to customize fine-pitch threads or full-thread structures?

A: We support customization of M14×1.5 fine-pitch threads and full-thread versions. Please provide drawings or technical requirements.

Q4: How to prevent M14 bolts from loosening in a vibrating environment? A: We recommend using spring washers, lock nuts, nylon locking rings, or thread locking adhesive.

Q5: What are the minimum order quantity and delivery time?

A: The minimum order quantity for standard products is 500 pieces. Samples are shipped in 3-5 days, and bulk orders in 7-15 days. Expedited production is available.