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High Strength Grade Hex Head Bolt - China

price: contact company for price

High Strength Grade Hex Head Bolt

Products Photos Catalog Strength Grade Hex Photos Catalog

Grade 8.8 Heavy Hex Bolts are designed for structural connections requiring superior mechanical strength and long-term reliability.

Manufactured under ISO 898-1, DIN 931/933, or ASME B18.2.1, they ensure stable clamping performance and resistance to vibration and shear stress in demanding environments.

Material & Technical Specifications

Material: Medium carbon steel / Alloy steel

Property Class: 8.8 (Tensile ≥ 800 MPa, Yield ≥ 640 MPa)

Thread: Metric coarse or fine thread (M10–M64)

Finish: Black oxide, zinc plated, hot-dip galvanized, Dacromet

Head Type: Heavy hex head, larger bearing surface for enhanced load distribution


Company Contact:


  • Phone: +86 310 689 5400

  • Address: Longquan Industrial Park Mingji Road, Handan , Hebei , China

  • Email: Email


Published date: November 11, 2026

  • Business Description: JDELI is the product of Handan DELI Fasteners Co.,Ltd, DELI company is a professional fastener manufacturing scale enterprises.

    Our main products include Shear Welding Stud, High Strength Hex Head Bolt, Torsional Shear Bolts and so on.

    Our products cover National Standard、ISO Standard、ANSI、JIS.

    DELI company was established in 2004, after more than ten years of development, now we have a modern plant with total space of 15,000 square meters.

    Domestic and foreign advanced production equipment more than 20 sets, annual production is 150 million sets.

    Our Products:

    - Shear Stud Factory

    - Heavy Hex Bolt Structural Steel Hexagonal

    - Torsional Shear Bolt

    - Ring Groove Rivet

    - Carbon Steel Wedge Anchor Bolt

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