Excavators Parts Customized Bolts and Nuts Factory Supplier
High-strength bucket tooth bolts and nuts, forged from 40Cr alloy steel and heat-treated to Grade 12.9. Reliable fitment and wear resistance in harsh excavation work.
| 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.
For excavator owners and equipment dealers requiring specialized fastening solutions, Customized Bolt and Nut options provide the precision and performance needed in demanding job sites. Whether you’re replacing non-standard parts, upgrading strength for heavy-duty work, or aligning with legacy equipment, we tailor each fastener to your machine’s unique requirements.
Key Features & Material Specifications
- Material: Premium 40Cr alloy steel
- Strength Grade: 12.9 (HRC 39-44 after quenching & tempering)
- Customization Scope:
- Bolt head shapes (hex, oval, flat, etc.)
- Thread size (coarse thread / fine thread)
- Length, diameter, and shoulder design
- Surface treatments (black oxide, zinc plating, etc.)
4. Matching Nuts & Washers: Included as required
5. Application Fitment: Suitable for structural joints, wear parts (bucket teeth, side cutters), drive parts, and track systems
Manufacturing Process
The production process ensures both structural reliability and dimensional accuracy:
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.
Why Choose Our Customized Bolts and Nuts?
- Machine-Specific Designs – Accurate to original equipment or modified part dimensions
- Longer Service Life – Resistant to vibration, load fatigue, and corrosion
- OEM & Aftermarket Support – Match with Doosan, CAT, Komatsu, Hyundai, and more
- Flexible MOQ & Fast Turnaround – Small batch production supported
Common Use Cases
- Bucket Tooth & Adapter Assembly
- Side Cutter & End Bit Installation
- Sprocket Segments
- Track Shoe Mounting
- Swing Bearing Securing
- Frame Reinforcement Points
OEM Reference & Custom Matching
If you have original drawings, part numbers, or physical samples, we can develop a 100% match for:
- Bolt and Nut Sets
- Bolt + Washer Combos
- Extra-Long or Non-Standard Head Bolts
| MORE TRACK BOLTS AND NUTS SPECIFICATION AS BELOW | |||
|---|---|---|---|
| OEM Part number | Parameter size | OEM Part number | Parameter size |
| CR3707 8U2703 | 5/8″UNF-18×46 | 6V1724 CR4132 | 7/8″UNF-14×95 B |
| 7H3597 | 5/8″unf-18×51 | 9W9058 CR4789 | 7/8″UNF-14×115 B |
| CR1251 | 5/8″unf-18×54 | 8S0395 CR2709 | 7/8:UNF-14×121 B |
| 9G3110 AC226 | 5/8″unfx57B | 6V1725 CR4133 | 7/8″UNF-14×127 B |
| 3T8601 CR4357 | 5/8″UNF-18×67 B | 101-32-11210 | M12X1.5X40 |
| 9G8592 CR5573 | 5/8″unf-18×83 B | 205-32-21210 | M14X1.5X45 |
| 5A4104 3P2274 | 5/8″unf-18×89 | 203-32-21220 | M14X1.5X56 |
| 3T8580 | 5/8″unf-18×91 B | 205-32-51120 | M16X1.5X50 |
| 7H3598 | 3/4″UNF-16X61 | 79039443 | M18X1.5X55F |
| 6V1792 CR4441 | 3/4″UNF-16X61 B | 79004259 | M18X1.5X60 |
| 1S8804 | 3/4″UNF-16×63 | 9W3619 | M20X1.5X55D |
| 7F8619 CR331 | 3/4″UNF-16X70 | 79035814 | M20X1.5X62F |
| 1061642 | 3/4″UNF-16X75 B | 6Y0846 | M20X1.5X63 |
| 6V1793 CR4440 | 3/4″UNF-16X81 B | 71401192 | M20X1.5X65F |
| CR5444 1070719 | 3/4″UNF-16X99 B | 207-32-51210 | M22X1.5X56F |
| 5A7524 1D1295 | 3/4″UNF-16X102 | 71428357 | M22X1.5X62F |
| 9S1838 CR3326 | 3/4″UNF-16X105 B | 6Y9024 | M22X1.5X67D |
| 2P9670 CR3119 | 3/4″UNF-16X112 | 76007851 | M22X1.5X70F |
| 6T1441 CR4699 | 3/4″UNF-16X124.5 B | 208-32-51210 | M24X1.5X65F |
| 7H3599 9M7444 | 7/8″UNF-14×67 B | 21M-32-11260 | M24X1.5X72 |
| 316910R1 | 7/8″UNF-14×76 | 175-35-11210 | M24X1.5X78 |
| 7T2748 | 7/8″unf-14×85 B | 195-32-11210 | M27X1.5X82 |
| 6V1723 CR4135 | 7/8″UNF-14×89 B | 6Y7432 | M27X1.5X90 |
| 195-32-41210 | M27x2.0x93 | 4K7038 | 9/16″-18UNF*1-5/8″ |
| PB1/2*1 1/2 | 1/2"*1 1/2"UNC | 2J3506 | 3/4"-11*41/64"UNC |
| PB1/2*2 | 1/2"*2"UNC | PB7/8*2 3/4 | 7/8"*2 3/4"UNC |
| 4F3654+4K0367 | 5/8"*2"UNC | 6F0196+2J3505 | 7/8"*2 3/4"UNC |
| 3F5108+4K0367 | 5/8"*2 1/4"UNC | 5J2409+2J3505 | 7/8"*3"UNC |
| 4F3656+4K0367 | 5/8"*2 1/2"UNC | PB7/8*3 1/4 | 7/8"*3 1/4"UNC |
| 4F3657+4K0367 | 5/8"*2 3/4"UNC | 2J2548+2J3505 | 7/8"*3 1/2"UNC |
| 4F3568+4K0367 | 5/8"*3"UNC | PB7/8*4 | 7/8"*4"UNC |
| PB5/8*3 1/8 | 5/8"*3 1/8"UNC | PB7/8*4 1/2 | 7/8"*4 1/2"UNC |
| 4K0367 | 5/8"-11*35/64"UNC | PB7/8*5 | 7/8"*5"UNC |
| PB3/4*2 | 3/4"*2"UNC | 2J3505 | 7/8"-9*3/4"UNC |
| 4F7827+2J3506 | 3/4"*2 1/4"UNC | 3J2801+2J3507 | 1"*2 1/2"UNC |
| 5J4773+2J3506 | 3/4"*2 1/2"UNC | 1J5607+2J3507 | 1"*2 3/4"UNC |
| 5J4771+2J3506 | 3/4"*2 3/4"UNC | 4F4042+2J3507 | 1"*3"UNC |
| 1J6762+2J3506 | 3/4"*3"UNC | 4J9058+2J3507 | 1"*3 1/4"UNC |
| PB3/4*3 1/2 | 3/4"*3 1/2"UNC | 4J9208+2J3507 | 1"*3 1/2"UNC |
| PB3/4*4 | 3/4"*4"UNC | 1J4948+2J3507 | 1"*3 3/4"UNC |
| 4F0253+2J3506 | 3/4"*4 1/2"UNC | 8J2928+2J3507 | 1"*4"UNC |
Maintenance Tips
- Apply anti-seize compound on high-vibration applications
- Regularly re-torque bolts under heavy-duty usage
- Replace full sets during component renewal to avoid uneven stress
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.
Quick Quote Request
Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
