Corrosion-Resistant Hex Bolt

Product Advantages

Excellent Structural Efficiency

The hexagonal head provides a large wrench contact area, minimizing slippage and ensuring precise torque application—ideal for high-torque tasks like heavy machinery assembly. Optional head holes/slots enable mechanical locking (e.g., with cotter pins), enhancing anti-loosening performance in vibration-prone settings (e.g., automotive engines).

Diverse Material & Finish Options

Materials: High-strength carbon steel (for general loads), alloy steel (for high-stress applications like aerospace), and stainless steel (304/316 for corrosion resistance).

Finishes: Zinc plating (general anti-rust), hot-dip galvanizing (HDG) (heavy corrosion resistance), plain, and black oxide—adapting to industrial, marine, and indoor environments.

Reliable Self-Locking & Durability

Ordinary metric threads offer inherent self-locking properties, suitable for thin-walled parts (e.g., electronic enclosures) and low-to-moderate vibration. For high-vibration scenarios, round/cylindrical head designs simplify disassembly and prevent thread damage, while paired lock washers further reduce loosening risks.

Broad Compatibility

Compliance with ISO/DIN standards ensures interchangeability with global nuts/washers, eliminating compatibility issues. It is available in sizes (M6 to M24) and thread types (metric coarse/fine), fitting applications from small electronic components to large steel structures.

Detail Data

The Hex Bolt/Screw features consistent specifications across models:

Materials: SAE 1045 carbon steel (tensile strength ≥600MPa), 42CrMo alloy steel (tensile strength ≥1000MPa), 316 stainless steel (corrosion resistance for marine use).

Finishes: Zinc plating (5–10μm, salt-spray resistance >480 hours); HDG (50–80μm, salt-spray resistance >2,000 hours); plain/black oxide for indoor use.

Load Capacity: M10 models have design shear strength ~18kN and design tension ~7kN; M12 models reach ~35kN shear strength and ~15kN tension (per ISO 898-1 strength classes: 8.8, 10.9, 12.9).

Tightening Torque: M10 (carbon steel) = ~25Nm; M12 (alloy steel) = ~40Nm.

Applications

Heavy Machinery & Infrastructure

Used in bridge steel structures, railway track fasteners, and crane/excavator chassis to bear static/dynamic loads. In buildings, it secures steel beams and bolt plates, complying with AISC standards for structural stability.

Automotive & Aerospace

Critical for automobile body connections and engine mountings (10.9-grade alloy steel ensures driving safety). In aerospace, it fastens aircraft components using 316 stainless steel/titanium, meeting ASTM F568M’s high-strength/corrosion requirements.

Industrial & Precision Instruments

Suitable for pressure vessels, ship deck machinery, and data center server racks (withstanding alternating loads). In medical devices, it enables micro-adjustment and anti-loosening to protect sensitive components.

Furniture & Electronics

Used in furniture assembly (office desks, cabinets) with zinc-plated carbon steel for rust resistance and easy disassembly. In electronics, it fixes wire terminal blocks and chassis, ensuring stable indoor connections.

Why Choose Us

We offer comprehensive services, including:

Customization: Non-standard lengths, special materials (e.g., titanium), and custom finishes for bulk orders.

Material certification (ASTM A36 for carbon steel, ASTM A193 Grade B7 for alloy steel, ASTM A240 for stainless steel).

Technical consultation (torque recommendations, finish selection for specific environments).

Fast delivery (3–7 days for standard models) and a 12-month warranty for manufacturing defects.

Our team provides 24/7 support to address installation or quality concerns.