Purlin Bolts Hex Head with Nut /Washers High Tensile Assembly

This high‑tensile Purlin Bolt Assembly is engineered for structural steel connections in roofing, framing, and industrial construction. Each assembly includes a hex‑head bolt, full‑thread or partial‑thread shank (depending on size), a matching high‑tensile nut, and two flat washers designed to distribute load and prevent surface damage — exactly as shown in the assembly photo.

Manufactured to Class 8.8 tensile strength, these bolts deliver exceptional performance in high‑load environments such as steel purlins, beams, brackets, and structural frames. Available in M12 × 30 mm, M16 × 30 mm, and M16 × 40 mm, they provide reliable fastening for C‑purlins, Z‑purlins, trusses, and heavy‑duty steel structures.

To ensure long‑term corrosion protection, these assemblies are offered in both Zinc‑Plated and Hot‑Dip Galvanised (HDG) finishes. Zinc plating provides a clean, bright appearance ideal for indoor or sheltered installations, while HDG offers maximum rust resistance for outdoor, coastal, and industrial environments.

• Hex‑head bolt with clean machining and strong torque surfaces
• Two flat washers for improved load distribution and vibration resistance
• High‑tensile nut designed for secure tightening and structural stability
• Straight, uniform shank suitable for steel‑to‑steel fastening
• Assembly layout matches standard Australian purlin bolt configurations

Key Features

• High‑Tensile Class 8.8 Steel for structural strength
• Hex Head Bolt for strong torque and easy tightening
• Includes Nut & Two Washers (complete assembly)
• Available in Zinc & Hot‑Dip Galvanised coatings
• Sizes: M12×30 mm, M16×30 mm, M16×40 mm
• Corrosion‑Resistant Options for long‑term durability
• Ideal for Steel Purlins & Structural Frames
• Reliable Performance in commercial, industrial, and roofing applications

Available Sizes

M12 × 30 mm — Galvanised (Class C8.8)

High‑tensile purlin bolt assembly with hex head, nut, and washers. Suitable for steel purlins, brackets, and general structural connections.

M12 × 30 mm — Zinc Plated (Class C8.8)

Bright zinc finish for indoor or low‑corrosion environments. Includes bolt, nut, and washers.

M16 × 30 mm — Zinc Plated (Class C8.8)

Heavy‑duty high‑tensile assembly ideal for larger purlin connections, steel framing, and industrial applications.

M16 × 40 mm — Zinc Plated (Class C8.8)

Extended‑length bolt assembly designed for thicker steel sections, multi‑layer purlins, and high‑load structural fastening.

Each size includes:

• Hex‑head bolt
• High‑tensile nut
• Two flat washers
• Full assembly ready for installation

Ideal Applications

• C‑purlin and Z‑purlin connections
• Steel framing and structural beams
• Roofing and industrial sheds
• Brackets, cleats, and steel supports
• Heavy‑duty construction and fabrication
• Warehouse, workshop, and commercial building projects

Why These Purlin Bolts Stand Out

• Engineered for structural integrity
• Designed for fast, secure installation
• High‑tensile Class 8.8 for demanding applications
• Corrosion‑resistant coatings for Australian conditions
• Complete bolt‑nut‑washer assembly included
• Photo‑accurate representation improves customer trust and conversions