H.T BOLT 30X185 WEVELLER

Description

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🔧 H.T Bolt 30×185 (High-Tensile)

Overview

• Designation: M30 × 185 mm high-tensile (H.T.) bolt likely manufactured by or associated with the name “Weveller” or similar.

• Purpose: Designed for heavy-duty structural or machinery applications—typically in truck suspension assemblies, tractor parts, heavy equipment linkages, or industrial holdings.

Material & Strength

• Material: High-strength alloy steel (commonly Grade 8.8, 10.9, or 12.9), ensuring excellent tensile strength and fatigue resistance.

• Surface Finish: Often zinc-plated, hot-dip galvanized, or black-oxide treated for corrosion resistance in demanding environments.

Dimensions & Form

• Thread Diameter: 30 mm nominal diameter (M30).

• Overall Length: 185 mm end-to-end, with standard thread portion length per DIN or ISO standards.

• Thread Pitch: Standard coarse pitch for M30 (typically 3.5 mm), though fine pitch variants may exist.

Head & Drive Style

• Head Shape: Usually hexagonal (hex head bolt) for wrench or socket application. Some heavy-duty variants may have flange heads or washer-style shoulders.

• Drive Type: Hex (external) head likely sized for 46–50 mm socket; other styles (e.g. square head) are rare at this specification.

Applications & Usage

• Used in structural joints, heavy-duty frames, linkages, or vehicle steering/suspension pivots where high clamping load is essential.

• Commonly paired with corresponding high-strength nut (e.g. M30 H.T. nut in same grade), lock washer or flanged nut, and washer assembly.

• Installation requires proper torque per grade specification—e.g., Grade 10.9 torque around ~210 Nm depending on lubrication condition.

Functional Notes

• High Tensile Grade: Critical for resisting shear and tensile loads, and maintaining clamp force under vibration or cyclical stress.

• Thread Engagement: Requires sufficient nut and threaded length for full strength; ensure minimum engagement of at least 2× bolt diameter.

• Corrosion & Wear Protection: Coatings help prevent rust and galling—important in exposed or industrial environments.

• Installation: Use calibrated torque wrench to avoid exceeding yield strength.

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✅ Summary Table