Bucket Pin Bolts and Nuts for Excavators
High-strength bolts and nuts specifically designed for bucket pin installation on excavators. Manufactured from 40Cr steel and heat-treated to Grade 12.9 hardness, these fasteners ensure secure fitment, resistance to heavy loads, and extended service life under demanding working conditions.
| Material | 40CR |
|---|---|
| Grade | 10.9/12.9 |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
Bucket pin bolts and nuts are critical fasteners used to secure the bucket pin (or pivot pin) to the excavator's boom or linkage. They ensure a firm, vibration-resistant connection between structural parts that undergo frequent impact and movement. Improper or worn bolts can lead to pin loosening, increased wear, and even structural failure.
These fasteners are commonly applied in:
- General-purpose excavation and earthmoving
- Mining and quarry work
- Heavy-duty construction and demolition
- Hydraulic quick coupler installations
Material & Performance
We use high-grade 40Cr alloy steel, heat-treated for exceptional tensile and shear strength.
- Bolt Grade: 12.9 (Yield strength > 1100 MPa)
- Thread Options: Coarse (UNC) and Fine (UNF) thread available
- Surface: Black oxide or zinc plating for corrosion resistance
This material choice and processing ensure:
- Outstanding resistance to deformation and breakage
- Reliable torque transmission and tightening
- Superior fatigue resistance
Manufacturing Process
Raw Steel Rods
High-quality 40Cr steel rods are selected and precision cut to length before hot forging.
Hot Forging & Head Shaping
Using red-hot steel billets, the bolt heads are formed through controlled press forging, ensuring structural consistency and mechanical strength.
Pre-Thread Machining
After head shaping, each bolt undergoes pre-machining to prepare for threading, with critical dimension control.
Inspection & Final Packaging
All bolts, nuts, and washers are dimensionally inspected, surface-treated, and packed as kits.
Kit Contents (Standard)
Each bucket pin bolt kit includes:
- 1x Bolt (forged head, full or partial thread)
- 1x High-strength nut (12.9 grade matched)
- 2x Hardened flat washers
Custom washer options (e.g., spring washers) available.
Thread Type: Coarse vs. Fine
- Coarse Thread (UNC): Faster assembly, better dirt resistance
- Fine Thread (UNF): Greater clamping force, more resistant to vibration
Available upon request based on application.
Compatibility & Use Cases
These bolt kits are compatible with:
- Komatsu, Hitachi, Doosan, Caterpillar, Hyundai, Kobelco, SANY, XCMG, and more
- Bucket pin diameters ranging from 45mm to 120mm
- Boom-arm connection points, cylinder brackets, H-link positions
- Custom lengths and threading available for OEM adaptation.
Why Choose Our Bolt Kits?
- 100% material traceability
- CNC-controlled thread machining
- Matched nut and washer sets for maximum clamp integrity
- Proven performance in OEM and aftermarket excavator maintenance
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
