Custom Lost Wax Casting Part Carbon Steel Heavy Duty Bolt and Nut Set

Secure the most critical connections in heavy industry with absolute, verifiable confidence using this heavy-duty lost wax cast bolt and nut set. Precision-engineered for extreme load conditions, shock absorption, and decades of service in unforgiving environments, this fastener set transforms ordinary threaded connections into permanent, fatigue-defeating structural bonds—delivered with the material density and thread fidelity only investment casting can provide.

Premium High-Carbon Steel Metallurgy: Manufactured from select-grade high-carbon steel, precision heat-treated to achieve specified property classes while maintaining core toughness—engineered specifically for applications demanding maximum tensile strength and impact energy absorption.
Lost Wax Cast Thread Integrity: Precision investment casting enables the formation of fully formed, radiographically verified thread profiles without root defects, tear lines, or stress risers common to rolled or cut threads—delivering continuous grain flow following the helical contour for superior fatigue resistance.
Dense, Uniform Bearing Surfaces: Cast-in bolt head undersurfaces and nut bearing faces achieve exceptional flatness and material consolidation, eliminating localized crushing, galling, and preload loss during high-torque installation and cyclic loading.
Quenched & Tempered Core Structure: Customizable heat treatment regimens—including through-hardening, tempering, and case depth optimization—provide verified tensile strength, yield point, and elongation characteristics matched to specific property class requirements (Grade 8, 10.9, 12.9, or proprietary specifications).
Corrosion-Protected Longevity: Available in hot-dip galvanizing, electro-galvanizing, black oxidizing, or zinc-nickel plating—each providing sacrificial barrier protection against atmospheric corrosion, saltwater immersion, and industrial chemical exposure.
Fully Customizable Dimensional Parameters: Manufactured to customer-specific thread sizes from M12 through M64, with controlled grip lengths, underhead radii, thread pitch variations, and proprietary drive configurations—accommodating everything from high-volume OEM structural fasteners to bespoke mining equipment specifications.
Verifiable Traceability & Certification: Each production lot supports full material traceability, mechanical property certification, and third-party inspection documentation—essential for critical infrastructure, defense contracting, and safety-critical applications.

Applications:

• Heavy Machinery & Earthmoving Equipment: Ideal for track shoe retention, bucket tooth fastening, and structural frame connections subject to continuous impact loading and abrasive contamination.

• Structural Steelworks & Bridge Construction: Essential for high-strength bolted connections in load-bearing members, crane rails, and seismic retrofitting applications requiring verified slip-critical joint performance.

• Mining & Mineral Processing: Suitable for crusher mantles, screen deck fasteners, and slurry pump assemblies demanding abrasion-resistant threads and sustained clamp load under continuous vibration.

• Marine & Offshore Engineering: Engineered for propeller shaft couplings, deck machinery foundations, and subsea flange connections requiring galvanic corrosion resistance and fatigue life verification in saltwater environments.

• Heavy-Duty Transportation & Rail: Ideal for coupler assemblies, bogie frame connections, and container securing systems requiring impact-resistant fasteners with verified low-temperature toughness.

More than a threaded fastener, this lost wax cast bolt and nut set is the metallurgical conscience of your structural assembly—preserving clamp load, absorbing cyclic stress, and ensuring every critical connection remains faithfully engaged when lesser fasteners would yield. Whether you’re assembling a 400-ton mining excavator or anchoring offshore production infrastructure, it’s the component that proves connection certainty begins with precision-cast, continuously grained thread integrity.