Common Parts/Bolts(Common Parts)

Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized high-strength bolts and matching fasteners to support diverse excavator, loader, bulldozer, motor grader, and mining truck requirements:
• Machine & Critical Joint Compatibility: Engineered for a broad range of Caterpillar heavy equipment—including crawler excavators, wheel loaders, track-type tractors, and off-highway trucks—our parts ensure exact thread specifications and strength grades (such as Grade 10.9 and 12.9) matching original factory designs for track bolts, plow bolts, swing bearing bolts, and cylinder head bolts to guarantee a perfect match.
• Complete Bolts & Fastener Components: 1. Track & Undercarriage Fasteners: High-tensile-strength track shoe bolts with hardened nuts, and heavy-duty bolts for idlers and rollers; 2. Structural & Wear-Plate Connectors: Bucket tooth pin bolts, countersunk plow bolts for cutting edges and corner bits, and linkage locking bolts; 3. Engine & Powertrain Fasteners: Cylinder head bolts, crankshaft flywheel bolts, differential housing bolts, and transmission flange bolts; 4. Matching Washers & Locking Hardware: High-strength flat washers, lock washers, Belleville disc springs, and anti-loosening wedge-lock washers.
• OEM & Heavy-Duty Aftermarket: We offer certified original equipment manufacturer Caterpillar fasteners alongside rigorous testing-backed heavy-duty aftermarket bolts manufactured via advanced cold-heading or hot-forging alloy steel processes with black oxide or Dacromet anti-corrosion finishes, delivering exceptional tensile and yield strength at a cost-effective bulk procurement price point for global clients.

Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global machinery fastener procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international buyers.
• Massive SKU Inventory and Sorting: We maintain large-volume stock of thousands of high-strength CAT bolts and nuts featuring varying specifications, thread pitches, and lengths. Utilizing barcode-enabled intelligent warehouse management systems, we guarantee zero-error precise picking and direct dispatch upon order confirmation to eliminate equipment downtime caused by missing single fasteners leading to forced machine stoppages.
• Anti-Rust and Secure Heavy Packaging: We implement specialized industrial packaging standards for high-density heavy-duty bolts, utilizing vapor corrosion inhibitor oil spraying, moisture-proof woven bags or thickened double-wall corrugated master cartons, and steel-banded wooden pallets to ensure parts do not scatter, get damp, or rust during transcontinental ocean or air transit.
• Consolidated Sourcing: We support overseas clients by consolidating high-strength bolts and nuts into precise bundled shipments alongside major mechanical parts, such as track shoes, bucket teeth, and cutting edges, maximizing container space utilization and significantly reducing international freight costs.

Engineering Solutions & Technical Support
Our technical framework focuses on resolving field-level operational challenges to eliminate equipment downtime, moving beyond simple parts distribution to deliver comprehensive engineering and service capabilities.
• Application-Specific Durability Solutions: We address common field issues in extreme working environments, such as blasting quarry heavy-load operations and high-temperature high-humidity corrosive mines, where track bolts experience frequent shear failures, bucket corner bit bolts suffer from abrasive sliding wear, and engine high-temperature bolts become stuck during removal. We also provide professional engineering upgrades, including Grade 12.9 ultra-high shear-resistant alloy steel bolts, high-temperature anti-seize threaded fastening solutions, and dual anti-loosening wedge-lock washer combinations.
• Fastener Troubleshooting and Torque Guidelines: We address common user concerns regarding joint failures by providing professional diagnostic and replacement guidance. This includes instructions on how to determine whether bolt failure stems from insufficient preload causing fatigue fracture or overload shearing, alongside emphasis on thread hole cleaning and correct lubrication application prior to installing critical structural bolts to ensure accurate preload maintenance.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering standard torque specifications and torque-plus-angle tightening procedures for all critical Caterpillar component bolts, preventing fastener stretching and deformation caused by excessive manual force.

Call to Action & User Experience
Optimize your machine structural reliability and joint security today by utilizing our interactive tools placed across strategic positions on our platform.
• Multi-Dimensional Intelligent Search and Specification Filtering: Benefit from advanced search functions that support fast product filtering by Caterpillar machine model, thread size and length, including configurations (such as M24 × 2.0 × 80 mm), strength grade (such as 10.9 or 12.9 options), or application area (such as track bolts, plow bolts, and cylinder head bolts), to lock onto target products instantly.
• RFQ and Bulk Fastener Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for fastener lists to receive bundled quotations and heavy cargo freight estimates, fulfilling centralized procurement requirements for overseas mining sites, fleets, and repair shops.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior mechanical structure and fastener experts to assist overseas clients in verifying thread pitch and hardness standards for non-standard or legacy machine high-strength bolts, ensuring cross-border procurement runs error-free.