ranroswang@hksparkling.com 
+86 138 2341 8469
ZGAQ-02899 Precision Nut-Slotted for Hyundai Wheeled Excavators R140W-9 R140W-9A R140W-9S HW140
The ZGAQ-02899 Slotted Nut is a high-strength fastening solution designed specifically for the heavy-duty requirements of Hyundai 140-series wheeled excavators. Its distinctive "castle" design allows a cotter pin or safety wire to pass through the slots and a hole in the mating bolt, providing a mechanical lock that prevents the nut from loosening under extreme vibration or rotational torque.
Dear Valued Partners,
Thank you for choosing SPARKLING MACHINERY, your professional supplier for construction machinery brake and transmission parts.
We are pleased to offer the ZGAQ-02899 Precision Slotted Nut, specially designed for the R140W-9 series and HW140 wheeled excavators. This high-precision locking nut is critical for securing drive shafts, axles, and transmission components, preventing loosening and failure during heavy-duty operation.
The SPARKLING MACHINERY NEW ZGAQ-02899 Nut-Sloted Photo:
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Anti-Loosening Security: The slotted design ensures a positive lock when used with a split pin, offering maximum safety in high-vibration applications.
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High-Grade Tensile Strength: Built to withstand the massive clamping forces required for 14-ton wheeled excavator assemblies.
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Corrosion-Resistant Finish: Treated with a protective coating to prevent rust, ensuring the nut remains easy to remove during future maintenance.
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Perfect Thread Pitch: CNC-machined to match the ZGAQ-02899 OEM specification exactly, preventing thread stripping during high-torque installation.
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Standard Fit for 140-Series: Specifically optimized for the Hyundai R140W and HW140 axle and suspension configurations.
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- Compatible Equipment Models：
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| Series | Model Types |
| 9 Series | R140W-9, R140W-9S |
| 9A Series | R140W-9A |
| HW Series | HW140 |
| Others | R170W-9 (Check Serial Number) |
Related Maintenance Parts for Hyundai R140W-9 / HW140：
| Part Name | Part Number | Category |
| Universal Shaft | ZGAQ-02893 | Drivetrain |
| Axle Oil Seal | ZGAQ-02057 | Sealing |
| Axial Joint | ZGAQ-02244 | Steering |
| Hub Bearing | 31N6-10210 | Drivetrain |
| Wheel Bolt | ZGAQ-02111 | Fastening |
Q&A
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Q1: What is the difference between ZGAQ-02899 and a standard hex nut?
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A: The ZGAQ-02899 features "slots" (castellations) that allow a split pin to lock the nut in place. This is a safety-critical feature for axles and steering systems where a nut coming loose could cause machine failure.
Q2: Should I reuse the old slotted nut during a repair?
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A: We recommend replacing the nut and the split pin whenever a major axle or hub service is performed to ensure the threads and locking slots are in perfect condition.
Q3: Is this nut compatible with the R140W-7 series?
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A: This specific part number is primarily listed for the -9 and HW series. Please provide your machine's VIN/Serial Number, and our technical team at HK Sparkling will verify the fitment for you.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879