CAT Genuine Parts For 520-7951 5207951 Screw Bolt CAT 3512 Excavator Engine Parts

CAT Genuine Parts For 520-7951 5207951 Screw Bolt CAT 3512 Excavator Engine Parts

Specification

Description

This high-strength hexagon head bolt is applicable to the engine of construction machinery 3512 excavator, with part number 520-7951 (5207951). It adopts a full-thread standard hexagon structure to provide a reliable fastening assembly solution for engine and equipment connection positions. Widely used in key connection positions such as engine block, end cover and chassis of excavators and heavy construction machinery. It accurately matches the original assembly size, can directly replace damaged original bolts, and meets the fastening and installation requirements of equipment under high-intensity working conditions.

Advantage

Forged from 11.9-grade high-strength alloy steel with overall quenching and tempering heat treatment process, featuring excellent tensile and yield resistance, effectively avoiding fracture, thread slipping and deformation.
Precisely rolled full thread ensures high thread engagement and uniform locking force. It is easy to install and disassemble, and not easy to loosen under long-term high-frequency vibration working conditions.
Manufactured in strict accordance with original factory dimensional tolerance standards with accurate specifications. It can be directly installed and replaced without secondary processing, saving installation time and improving construction efficiency.
The surface is treated with black anti-rust finish to resist erosion from oil, moisture and dust. It can well adapt to harsh working environments such as humid construction sites and extreme temperatures for longer service life.
Each bolt has passed multiple factory inspections including hardness, tensile force and torque tests, complying with safety standards for heavy-duty construction machinery fasteners with stable and consistent batch quality.

Performance

Mechanical Strength: Complies with 11.9-grade high-strength fastener standard, capable of withstanding high-torque tightening and continuous alternating loads to satisfy the stress demands of heavy construction machinery.
Anti-loosening & Shock Resistance: The precise standard thread ensures stable friction after locking, preventing bolt loosening or falling off during long-term vibrating operation to guarantee structural safety of equipment.
Environmental Resistance: The black anti-corrosion coating delivers outstanding performance in rust prevention, oil resistance and temperature tolerance, supporting long-term stable operation in complex harsh working scenarios like mines and outdoor construction sites.
Assembly Compatibility: Standard hexagon head fits common socket wrenches for easy disassembly and installation. With precise dimensional tolerance and strong interchangeability, it can perfectly replace original fasteners.
Fatigue Resistance: Optimized integral heat treatment greatly improves the bolt’s anti-fatigue property, avoiding metal fatigue fracture after repeated disassembly and long-term pressure bearing, which effectively reduces equipment failure risks caused by fastener damage.

Compatible Models list

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